Operating Instructions · BA 193e02/02.00 No. 51502111 valid from software version 2.0 upward KOBO-LF ACM-X Transmitter for Conductivity Operating Instructions OBOLD ISO 9001

BA 193e02/02.00No. 51502111valid from software version 2.0 upward

KOBO-LFACM-XTransmitter for Conductivity

Operating Instructions

OBOLDISO 9001

Need information on the instrument?Please read the following chapters:

Safety

General information

You wish to install the instrument.The required steps are described in these chapters:

Installation

You wish to operate or reconfigure the instrument. Theoperating concept is explained in these chapters:

Operation

Instrument configuration

Need help with problems or maintenance?

Diagnosis Technical Data%Ω°C

Appendix Index

LM253E00.CHP

Table of Contents1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.1 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.2 Storage and transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.3 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.4 Packaging and disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21.5 Product structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31.6 Type key. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.1 Intended application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.3 Installation, start-up, operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.4 Monitoring and safety features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.5 Immunity to interference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52.6 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1 Measuring system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.2 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.3 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.4 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103.5 Sensor installation and cable connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

4 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144.1 Operator interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144.3 Key functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154.4 Auto / manual mode of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164.5 Operating concept. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174.6 Access codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194.7 Display during measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194.8 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

5 Instrument configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205.1 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225.2 System configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225.3 Current outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245.4 Monitoring functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 265.5 Relay contact configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295.6 Temperature compensation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 405.7 Concentration measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 435.8 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 445.9 KOBOdata . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 465.10 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

6 Maintenance and troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506.1 Definition of terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506.3 Troubleshooting common problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 516.4 Problem elimination based on error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

7 Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

8 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

9 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

OBOLD

KOBO-LF ACM-X Table of contents

1

1 General information

1.1 Symbols used

Warning:

This symbol alerts to hazards whichmay cause serious injuries as well asdamage to equipment if ignored.

Note:

This symbol indicates importantitems of information.Ignoring this information may resultin malfunction.

1.2 Storage and transport

The packaging material used to store ortransport the transmitter must provide shockprotection. Optimal protection is provided bythe original packaging materials.

Conformance with the ambient conditions(see technical data) must be assured.

1.3 Unpacking

Verify that the packaging and contents areundamaged! Inform the post office or freightcarrier of any damage.Damaged merchandise must be retained untilthe matter has been settled.

Check that the delivery is complete andagrees with the shipping documents and yourorder (refer to nameplate for type andversion).

The delivery includes:

• Measuring transmitter ACM-X• Operating instructions BA 193Ce02• Field instrument:

– 1 plug-in screw terminal• Panel-mounted instrument:

– 1 set of plug-in screw terminals– 2 fastening clips

Keep the original packaging materials forfuture storage or shipping of the instrument.

If you have any questions, consult yoursupplier or the sales agency in your area (seeback cover of these operating instructions foraddresses).

1.4 Packaging and disposal

Package the assembly properly for reuse at alater point in time. Optimal protection isprovided by the original packaging materials.Observe local regulations for disposal.

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General information KOBO-LF ACM-X

2

1.5 Product structure

You can identify the instrument version by theorder code on the nameplate.

1.6 Type key

Typ-lf-tif Fig. 1.1 Nameplate ACM-X

Analysis technology

Conductivity / resistance

Measuring transmitter

Instrument version

2 contacts (as limit contactors or P(ID)-controllers or timer)

Panel-mounted housingField housing

230 V AC115 V AC100 V AC

Output conductivity or restistance

no additional interface

A

C

M

X

2

EF

234

C

0

0C2XM -CA

Conductive measurement

Inductive measurement

KI

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LM253E01.CHP

KOBO-LF ACM-X General information

3

2 Safety

2.1 Intended application

The ACM-X transmitter is a field-tested andreliable measuring transmitter used todetermine the conductivity and resistance ofliquid media.

The ACM-X is particularly suitable for use inthe following areas of application:

• Chemical industry• Pharmaceutical industry• Foodstuffs industry• Drinking water processing• Condensate processing• Municipal sewage treatment plants• Water conditioning

2.2 General safety instructions

This device has been manufactured for safeoperation according to the state of the art inengineering and conforms to the applicableregulations and European standards (seeTechnical data). It has been designedaccording to EN 61010-1 and has left themanufacturer’s works in perfect condition.

However, if used improperly or for purposesother than the intended purpose, it may bedangerous, e.g. due to incorrect connection.

Warning:

• Operating this instrument in anyway other than as described inthese instructions may compromisethe safety and function of themeasuring system and is thereforeimpermissible.

• The notes and warnings in theseinstallation and operatinginstructions must be strictlyadhered to!

2.3 Installation, start-up, operation

Warning:

• This device may only be installed,connected electrically,commissioned, operated andserviced by properly trainedpersonnel authorized by thesystem operator.

• The personnel must be familiarwith these operating instructionsand must adhere to theinstructions described therein.

• Make sure that the power supplyratings match the data specifiedon the nameplate before youconnect the instrument to a powersource.

• A clearly identified mainsdisconnecting device must beinstalled close to the instrument.

• Live components can be touchedthrough the vent slots in thehousing and the openings on therear of the housing. Do not inserttools, wires, etc., in these slots(panel-mounted unit only).

• Check that all connections havebeen properly made beforepowering up the system!

• Damaged equipment that may bedangerous must not be operatedand should be clearly identified asbeing defective.

• Any troubleshooting of themeasuring system is to beperformed exclusively byauthorized, trained personnel.

• If faults cannot be remedied, theinstrument must be removed fromservice and secured to preventaccidental start-up.

• Repairs not described in theseoperating instructions may only beperformed at the manufacturer’sworks.

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Safety KOBO-LF ACM-X

4

2.4 Monitoring and safety features

Safety features

The transmitter is protected against externalinfluences and damage by the followingdesign measures:

• Rugged housing• Degree of protection provided by

enclosure: IP 65 (Field housing)• UV resistance

Monitoring features

In the event of a system error or power failure,an alarm condition is signalled via a fault-signalling contact.

2.5 Immunity to interference

This instrument has been tested according tothe applicable European standards forindustrial applications with regard toelectromagnetic compatibility. It is protectedagainst electromagnetic interference by thefollowing design measures:

• Cable screen• Interference suppressor filter• Interference suppression capacitors

Warning:

The specified immunity tointerference only applies for devicesconnected as outlined in theseoperating instructions.

2.6 Declaration of conformity

The ACM-X transmitter has been developedand manufactured in accordance withcurrently valid European standards anddirectives.

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LM253E02.CHP

KOBO-LF ACM-X Safety

5

3 Installation

The following procedure should be followedfor a complete measuring system installation:

• Installation or attachment of transmitter(see chapter 3.3)

• Selection and connection of cable andsensor (see chapters 3.4, 3.5and 8)

• Installation is followed by start-up (seechapter 5).

3.1 Measuring system

The complete measuring system comprises:

• The KOBO-LF type ACM-X transmitter• A sensor with or without an integrated

temperature sensor

• A measuring cable ACK-X (conductivemeasurement) or cable with sensor(inductive measurement )

LM253SYS.CDR

Immersionassembly

KOBO-pH ACM-X

KOBO-pH ACM-X

Fig. 3.1

Complete measuringsystems with measuringcable, assembly andconductivity sensor

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Installation KOBO-LF ACM-X

6

3.2 Dimensions

Rel.1

Rel.2

Alarm

OBOLD

CALRel.1

Rel.2

117 221.8

32.542.5

64

Fig. 3.2

Dimensions ofKOBO-LF ACM-X,Field housing

EINBAU2.CDR

96

690

139

Fig. 3.3KOBO-LF ACM-X,Panel-mounted version

LM253E03.CHP

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KOBO-LF ACM-X Installation

7

3.3 Mounting

3.3.1 Field instrument

Three mounting versions are available for thefield instrument version:

• Mounting on 2"-pipes• Wall mounting• Table mounting

Wall mounting

Pipe mounting and table mounting

275

120

150

ø60

-3

2218

111Pg 9 (3 x)

ø Pg 9 (4 x)

Pg 11 (2 x)32,5

42,564

250WANDMONT.CDRFig. 3.4

Wall mountingKOBO-LF ACM-X

817018

5.5

Housing Housing

Pipe mounting

Table mounting

84

67.5

ø60.3

28

ø6.

6

ROHRMONT.CDRFig. 3.5

Pipe mounting andtable mountingKOBO-LF ACM-X

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3.3.2 Panel-mounted instrument

The instrument is attached using the suppliedtensioning screws (see Fig. 3.6).The required overall installation depth isapprox. 165 mm.

MONT9.CDR

92+0.5

92+

0.5

90

57

33

approx.25

max. 45

96

92

1

2

3

139 6

Fig. 3.6

Attachment of panel-mounted instrument1 Wall of control

cabinet2 Gasket3 Tensioning screws

LM253E03.CHP

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3.4 Electrical connection

Connection diagram

The connection diagram depicted in Fig. 3.7shows the connections for an inductive orconductive sensor (dashed lines).

The connection of the various measuring cellsis shown in more detail in Figs. 3.9 to 3.11.

Note:

The instrument in a panel-mountedhousing has protection class II and isgenerally operated withoutprotective earth connection.

11

12

13

47

48

49

57

58

59

15 V85

86

S

PE

10-50 V

81

82

10-50 V

93

94

L+

L-

PE

L

N

∼ =

41

42

43

84

83

15

16

Lf

mA31

32

mA33

34

51

52

53

54

55

56

84

83

ANCD01.CDR

Aux. voltageoutput

Digitalinput 2

Digitalinput 1(hold)

Signal output 2temperature

Signal output 1conductivity

Temperature

Measuring cell(conductive)

Measuring cell(inductive)

Alarm(de-energized

contactposition)

Relay 1(de-energized

contactposition)


contactposition)


contactposition)


contactposition)

Mains

* optional

**

Fig. 3.7

Electrical connection ofKOBO-LF type ACM-X(all inputs and outputsconnected)

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Connections for panel-mounted instrument

REL1

REL2

REL3

REL4

NC

NC

49

COM

COM

COM

COM

59

54

55

56

52

51

53

58

57

48

47

131084-4B

LM-AN02.CDR Fig. 3.8

Connection compartmentstickers for panel-mountedinstrument

LM253E03.CHP

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3.5 Sensor installation and cable connection

Measuring cable connection

The conductivity snesor are connected usinga special, shielded multi-core cable.Termination instructions are supplied with themeasuring cables.Use junction box to extend the measuringcable.

Structure and termination of measuring cables

Special measuring cable required for connection of conductivity sensors

Sensor type Cable Extension

Two-electrode sensor with or withouttemperature sensor Pt 100 ACK-X Junction box

+ ACK-X

Inductive sensor Cable permanentlyattached to sensor

Junction box+ special cable

Maximum cable length

Conductive conductivitymeasurement max. 100 m with ACK-X (corresponds to 10 nF)

Resistance measurement max. 15 m with ACK-X (corresponds to 2 nF)

Inductive conductivity measurement max. 55 m

Inner conductor

Green (11)

White (12)

Yellow (13)

ACK-X1

Semiconductorscreen

Screen

Green (11)

White (1)

Yellow (13)

Brown(unused)

Semiconductorscreen

White

Red

Fixed cable

Brown(unused)

Black

(83)

(84)

(84) (83)

(15)(16)

KABEL.CDRFig. 3.9

Structure of specialmeasuring cables ACK-X(left) and fixed cable(right)

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Examples for connection

Note:

The sensor screen must be groundedto ensure faultless operation of theconductive instrument. For thatpurpose, a PE distribution board isavailable. This is located on thecover frame of the panel-mountedinstrument or in the connectioncompartment of the field instrumentrespectively.

gn wt ye

gn wt ye

bk

bk

CYK 71

ϑ

83 15 16 84

23 1

11 12 13

LM2X3CDE.CDR Fig. 3.10Connection of conductivesensors

wt rd

CLK 5 (fixed cable)

ϑ

84 15 83 1611 12 13S

gn wt yeorbn

LM2X3IDE.CDR Fig. 3.11Connection of inductivesenors

LM253E03.CHP

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4 Operation

4.1 Operator interface

4.2 Display

LED indicators

Indication of current operating mode: “auto” (green LED) or “manual” (yellow LED)

Indication for relay controlled in “manual” mode (red LED)

Indicates the state of relays 1 and 2.LED green: measured value is within permissible limits, relay is inactive.LED red: measured value is outside permissible limits, relay is active.

Alarm indication for continuous limit violation, temperature sensor failure or systemerrors (see error list in chapter 7)

Liquid crystal display

12.15mS/cm

R232

Setpoint

DISPL1-E.CDR

Liquid crystal displayfor display of measuredvalues andconfiguration data

4 main control keys forcalibration andinstrument configuration

Key for switchingbetween automatic /manual operation

LED indicators forlimit contactor relays(switching state)

LED indicator for alarmfunction

Display of activecontact and key forrelay switching inmanual mode

Field for user labelling

Fig. 4.1 Operating elements

1215mS/cm

R232

Setpoint

DISPL3-E.CDR

Measuring modeindicator (normaloperation)

Calibration modeindicator

Setup modeindicator(configuration)

‘Hold’ modeindicator (outputsreflect last currentstatus)

In measuring mode:quantity measured.In setup mode:parameter adjustedIn measuring mode:

secondary measured value.In setup / calibr. mode:e.g. parameter setting

Automatictemperaturecompensationdisplay

Measuring cellsymbol, flashesduring ongoingcalibration

Error indicator

In measuring mode:main measurement value.In setup / calibr. mode:e.g. parameter

Rel 3/4 state indicators:inactive, active

Function coding display

Fig. 4.2 Liquid crystal display

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Operation KOBO-LF ACM-X

14

4.3 Key functions

CAL key

When the CAL key is pressed, the instrumentprompts for the calibration access code (fixedsetting: 22 for calibration or any other numberto view the calibration data). Acknowledgewith the CAL key to proceed. Use the CALkey to continue through the calibrationprocess.

Note:

The calibration data set in functiongroup C is used for calibration.

ENTER key

The ENTER key has several functions:– It calls up the setup menu from the

measuring mode– It is used to store (acknowledge) data

entered in setup mode– It is used to start calibration (same function

as CAL key).

PLUS key

MINUS key

The PLUS and MINUS keys have the followingfunctions:– They are used to select function groups;– to set parameters and numeric values (the

setting speed increases when the key isheld down); and

– to operate the relays in manual mode (seechapter 4.2).

– In the measuring mode, the PLUS keyswitches to °F and disables the temperaturedisplay (see chapter 4.7), while the MINUSkey selects the error display (see chapter 4.7).

– Display of the uncompensated conductivityvalue (PLUS key).

REL key

The REL key is used in manual mode toswitch between the relays and the manualstart cleaning function.

AUTO key

This key is used to toggle between theautomatic and manual modes of operation.

Escape function

Press the PLUS and MINUS keyssimultaneously to return to the measuringmode (in calibration mode: at the end ofcalibration). Press the PLUS and MINUSkeys again to return to the main menu.

Locking the hardware

The operation of the instrumentcan be locked completely.

Press the PLUS key and the ENTER key at thesame time to lock the instrument. The codeprompt displays the code 9999.

Unlocking the hardware

To unlock, press the CAL and MINUS keys atthe same time. The code prompt displays thecode 0.

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LM253E04.CHP

KOBO-LF ACM-X Operation

15

4.4 Auto / manual mode of operation

Auto mode

In this mode of operation, therelays are controlled by thetransmitter.

REL key

The REL key is used to select oneof the relays present in theinstrument.

Switching to manual mode

The instrument is switched to themanual mode by pressing thefollowing keys:

Press AUTO key.

Enter code 22.

Select relay or function. Press theREL key to toggle between therelays. The display shows theselected relay in the second line.

Set the relays. Switch on withPLUS, switch off with MINUS. Therelay state remains in effect until itis actively reset.

Press AUTO key for returning to themeasuring mode.

Note:

• Enable the manual mode byentering access code “22”.

• The operating mode remains ineffect even after a power failure.

• The manual mode takesprecedence over any otherautomatic function (hold).

• Hardware locking in the manualmode is not possible.

• The manual settings remain ineffect until they are actively reset.

• Error code E102 is signalled in themanual mode.

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4.5 Operating concept

Operating modes

Note:

The user can put the functions andcontacts on hold during calibrationand configuration (see chapter 5.8,page 44; function S2); the durationof the hold period may also bechanged.

Code

K-SETMOD.CDR

Setup mode:Access to all

configuration settings

Measuring mode:Standard mode of

operation, display ofcurrent measured values

The function groups areselected with the PLUS or

MINUS key

Code input:Following input ofcode 22, the settings inthe function groups canbe modified.When another code isentered, the settings canonly be viewed but notmodified.

Calibration mode:Execution of

calibration routine

Fig. 4.3Description of operatingmodes

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LM253E04.CHP


17

Menu structure

The configuration and calibration functionsare arranged in a menu structure by functiongroups.

The function groups are selected in the setupmode with the PLUS and MINUS keys. TheENTER key is used to move from one functionto the next within a function group. The PLUSand MINUS keys are used for option selectionand editing. Selections must be confirmed bypressing the ENTER key. This also moves thecursor to the next function.Pressing the PLUS and MINUS keys at thesame time terminates programming (return tomain menu).

Note:

• If a change is made but notconfirmed by pressing the ENTERkey, the previous setting isretained.

• See the appendix of theseoperating instructions for anoverview of the menu structure.

EE E E

-

BEDSCHE.CDR

Functions(parameter selection, value entry)

Function groupsMove forward and backward

with the PLUS and MINUS keys

Move from one function to thenext with the ENTER key

Fig. 4.4Schematic representationmenu structure

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Hold function: “freezes” the outputs

The current output is “frozen” in the setupmode and during calibration, i.e. the lastcurrent value is constantly output. The displayshows the “HOLD” message (see chapter 5.8,page 44 for hold settings).

Note:

• During automatic operation, allcontacts will go to their normalpositions.

• All hold settings are ignored for timer andthe external hold function, i.e. hold isalways activated for these functions.

• Any alarm delay accumulated will be resetto ‘0’.

• This function can also be activatedexternally via the hold input (seeconnection diagram in Fig. 3.7; digitalinput 1).

• The manual hold (field S3) remains activeeven after a power failure.

4.6 Access codes

All instrument access codes are fixed, i.e.they cannot be modified. Three access codesare distinguished (cf. Fig. 4.3):

• Any code: Read mode access, i.e. allsettings can be viewed but not modified(access with ENTER/CAL key, see Fig. 4.3).

• Code 22: Access to calibration and offsetmenus (access with CAL key, see Fig. 4.3).

• Code 22: Access to configuration menusfor instrument configuration and usersettings (access with ENTER key, seeFig. 4.3).

• See chapter 4.3, page 15 for hardwarelocking and unlocking.

4.7 Display during measurement

The measurement display can be individuallyadapted to user requirements.

Settings accessed with PLUS key:

• Press the PLUS key to display thetemperature in °F instead of °C.

• Press the PLUS key a second time tosuppress the temperature display.

• Press the PLUS key a third time to displaythe uncompensated conductivity value.

• Press the PLUS key a fourth time to returnto the standard display.

Settings accessed with MINUS key:

• Press the MINUS key to display the firsterror message.

• Press the MINUS key repeatedly to displaythe following error messages (up to ten).If no further errors exist, the display returnsto the measuring mode.

Note:

Function group F (alarm, seechapter 5.4.1) can be used to definean alarm for each individual errorcode.

4.8 Calibration

Please refer to chapter 5.10 for the calibrationprocedure.

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LM253E04.CHP


19

5 Instrument configuration

After power-up (connection to power), theinstrument performs a self-test and thenenters the measuring mode.

Now it can be configured and calibrated forthe first time.

The following function groups are availableon the ACM-X (the groups that are onlyavailable on the S version are markedaccordingly in the function descriptions):

Setup mode

SETUP 1 (A) see chpt. 5.2.1 SETUP 2 (B) see chpt. 5.2.2 CURRENT OUTPUT (O) see chpt. 5.3 ALARM (F) see chpt. 5.4.1 CHECK (P) see chpt. 5.4.2 RELAY (R) see chpt. 5.5 ALPHA TABLE (T) see chpt. 5.6 CONCENTRATION (K) see chpt. 5.7 SERVICE (S) see chpt. 5.8 KOBOdata (E)

Calibration mode

CALIBRATION (C) see chpt. 5.10

Selecting and locating functions is facilitatedby a code displayed for each function in aspecial display field. The structure of thiscoding is shown in Fig. 5.2.The first column indicates the function groupas a letter (see group designations). Thefunctions in the individual groups are countedfrom the top to the bottom and from the left tothe right.

Factory settings

When the instrument is switched on for thefirst time, the factory settings are in effect.The following table provides an overview of allmajor settings.

Please refer to the description of theindividual functions in chapter 5 for all otherfactory settings (the factory settings areprinted in bold face).

2s

F3

Err.DelayDISPL4-E.CDR

Function coding:The displayed code indicatesthe function position in thefunction group.

Additional information

Fig. 5.1

Function display:additional informationfor user

A A1 A111

A121

A131 A132 A133

MATRIX.CDR

Fig. 5.2 Function coding

Type of measurementConductive or inductive conductivity measurement,temperature measurement in °C oder °F(according to setting)

Temperature compensation type Linear with reference temperature 25 °C

Temperature compensation Automatic (ATC on)

Limit for controller 1 9999 mS/cm

Limit for controller 2 9999 mS/cm

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Instrument configuration KOBO-LF ACM-X

20

Alarm contacts

The relay state shown on the connectiondiagrams is the non-operative state.

After switching on, the relay contacts arenon-operative, the alarm current circuit isopen, the lamp is not on.

In the event of an error, the relay contactcloses the alarm current circuit, the lamplights up.

Hold Active during configuration and calibration

Measuring range0 µS/cm ... 2 S/cm (no measuring range adjustment).The measuring ranges float and are determined bythe sensors connected (see chapter 8).

Current outputs 1 and 2* 4 ... 20 mA

Current output 1: meas. value for4 mA signal current 0 µS/cm

Current output 1: meas. value for20 mA signal current 2000 mS/cm

Current output 2: temperaturevalue for 4 mA signal current * –35.0 °C

Current output 2: temperaturevalue for 20 mA signal current* 250.0 °C

*On versions equipped accordingly

RELAIS2.CDR

non-operative state alarm state

41

42

43

41

42

43

Fig. 5.3Recommended fail-safecircuit for an alarm contact

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LM253E5A.CHP

KOBO-LF ACM-X Instrument configuration

21

5.1 Start-up

After power-up (connection to power supplyestablished), the user must make thefollowing selections in the specified functiongroups:

• Function group SERVICE (S)S1: Select language and exit functiongroup.

• Function group SETUP 1 (A)Adjust all the parameters in this group; seechpt. 5.2.1.

• Function group SETUP 2 (B)Adjust all the parameters in this group; seechpt. 5.2.2.

Other configuration options are explained inthe chapter to follow for each menu.

5.2 System configuration

The system is configured using the functiongroups SETUP 1 and SETUP 2. Themeasurement type and sensor are selectedhere, and the settings for temperaturemeasurement are made.

All the parameters in these two functiongroups are to be configured to avoidmeasuring errors or failure to measure at all.

5.2.1 Setup 1

Coding Field Selection or rangeFactory setting

Display Info

AFunction groupSETUP 1

Initial display in function groupSETUP 1.

A1Operating modeselection

cond = conductiveind = inductiveMOhm = resistanceconc = concentration

Display varies according toinstrument version:– cond/resistance/conc– ind/conc

Any change in operatingmode causes anautomatic reset ofuser settings.

A2Selection ofconcentration unitto be displayed

%ppmmg/lTDSnone

A2 only active if A1 = conc.

A3Selection ofdisplay format forconcentration unit

XX.xxX.xxxXXX.xXXXX

A3 only active if A1 = conc.

A

SETUP 1

cond A1

Oper.Mode

% A2

Conc.Unit

XX.xx A3

Format

Factory settings are printed in bold face; base version does not include functionsin italics, but available as an option.

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22

5.2.2 Setup 2


Display Info

A4Selection of unit tobe displayed

auto, µS/cm, mS/cm,S/cm, µS/m, mS/m,S/m, auto Ω, kΩ⋅cm,MΩ⋅cm, kΩ⋅m

When “auto” or “auto Ω” isselected, the maximumresolution possible isautomatically selected.A4 not active if A1 = conc.

A5Enter cell constantfor sensorconnected

cond: 1.000 cm–1

ind: 1.98 cm–1

MOhm: 0.01 cm–1

0.0025 ... 99.99 cm–1

Refer to the measuring cellquality certificate for the exactcell constant.

A6Enter cableresistance

0 Ω0 ... 99.99 Ω

Only if A1 = cond(conductive instrument).See chapter 7.

A7Enter measuredvalue damping

11 ... 60

Measured value damping causesaveraging over the specifiednumber of individual measuredvalues. It is used, for example, tostabilise the display withapplications that fluctuate a greatdeal. There is no damping if “1”is entered.


Display Info

BFunction groupSETUP 2

Initial display in function groupSETUP 2.

B1Selection oftemperaturesensor

Pt100Pt1k = Pt 1000NTC30fixed

“fixed”:No temperature measurementif a fixed temperature value ispreset.

B2

Selection oftemperaturecompensationtype

lin = linearTab = tableNaCl = common salt

(IEC 746)Pure = ultrapure waternone

This option is not displayed forconcentration measurement.“Pure” is only available onconductive instruments.Description “Tab“: see page 40 ff.

auto A4

Unit

1.000 A5

Cellconst

1/cm

A6

Ohm cable

0@

1 A7

Damping

B

SETUP 2

B1

ProcTemp.

Pt100

B2

TempComp.

lin


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23

5.3 Current outputs

The function group CURRENT OUTPUT isused to configure the individual outputs.Either a linear (O2 (1)) or, in conjunction withthe S version, a user-defined current output

characteristic (O2 (3)) can be entered.Furthermore, a current output value can besimulated to check the current outputs (O2 (2)).


Display Info

B3Enter temperaturecoefficient α

2.10 %/K0.00 ... 20.00 %/K

Only if B2 = lin.Any table defined is not active inthis case.

B4Enter processtemperature

25.0 °C–35.0 ... 250.0 °C

Only if B1 = fixed.

Editing is only possible in °C.

B5Temperaturesensor calibration

actual value display–35.0 ... 250.0 °C

This entry is used to calibrate thetemperature sensor to anexternal measurement.Omitted if B1 = fixed.

B6Temperaturedifference isdisplayed

0.0 °C–5.0 ... 5.0 °C

The difference between thetemperatures measured andentered is displayed.

Omitted if B1 = fixed.

Coding FieldSelection or range

Factory settingDisplay Info

OFunction groupCURRENTOUTPUT

Initial display in function groupCURRENT OUTPUT.

O1Selection ofcurrent output

Out1Out2

A different characteristic can beselected for each output.

O2 (1) Enter linearcharacteristic

lin = linear (1)sim = simulation (2)table (3)

The slope of the characteristicmay be positive or negative.

See O2 (2), O2 (3) for thesimulation and tablecharacteristics.

B3

alphaVal

2.10%/K

B4

ProcTemp.

25.0°C

B5

RealTemp.

0.0°C

B6

TempOffs.

0.0°C

O

OUTPUT

O1

Sel.Out

Out1

O2

Sel.Type

lin


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24


Display Info

O211Selection ofcurrent range

4–20 mA0–20 mA

O212

0/4 mA value;entercorrespondingmeasured value

cond/ind: 0.00 µS/cmMOhm: 0.00 kΩ⋅cmconc: 0.00 %temp.: 0.0 °Centire meas. range

Enter the measured valuecorresponding to the minimumcurrent value (0/4 mA) at thetransmitter output.Display format from A3.(Spreading: see Technical data.)

O213

20 mA value;entercorrespondingmeasured value

cond/ind: 2000 mS/cmMOhm: 500 kΩ⋅cmconc: 9999 %temp.: 150.0 °Centire meas. range

Enter the measured valuecorresponding to the maximumcurrent value (20 mA) at thetransmitter output.Display format from A3.(Spreading: see Technical data.)

O2 (2)Current outputsimulation


The simulation is terminated byselecting (1) or (3).See O2 (1), O2 (3) for othercharacteristics.

O221Enter simulationvalue

current value0.00 ... 22.00 mA

The current value entered here isoutput through the current output.

O2 (3)Enter currentoutput table(S version only)


Values may also be added orchanged at a later point in time.See O2 (1), O2 (2) for othercharacteristics.

O231Selection of tableoption

readedit

O232Enter number oftable value pairs

11 ... 10

This is where the number of pairsof x and y values (measuredvalue and associated currentvalue) is entered.

O233Selection of tablevalue pair

11 ... number of table

value pairsasign

O211

Sel.Range

4-20

O212

0/4 mA

0.00µS/cm

O213

20 mA

2000mS/cm

O2

Sel.Type

sim

O221

Simulat.

4.00mA

O2

Sel.Type

table

O231

Sel.Table

read

O232

No.Elem.

1

O233

Sel.Elem.

1


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LM253E5A.CHP


25

5.4 Monitoring functions

The monitoring functions are used to definevarious alarms and to set output contacts.Each individual error can defined to beeffective or not (at the contact or as an errorcurrent). Moreover, sensor polarisation (P1)

can be detected, or the measuring signal canbe checked to ascertain that the measuringcell is working properly (it must supplyplausible values). An alarm condition can bedefined to activate a cleaning function (F8).

5.4.1 Alarm


Display Info

O234Enter x value(measured value)

cond/ind: 0.00 µS/cmMOhm: 0.00 kΩ⋅cmconc: 0.00 %temp.: 0.0 °Centire meas. range

x value = measured valuedetermined by user.

O235Enter y value(current value)

4.00 mA0.00 ... 20.00 mA

y value = current valuedetermined by user to beassociated with measured valueentered in O234.

O236Enter whether ornot the tablestatus is okay

yesno

If “yes”: return to O2.If “no”: return to O233.

Coding FieldSelection or range

Factory settingDisplay Info

FFunction groupALARM

Alarm function settings.

F1Selection ofcontact type

Stead = steadycontact

Fleet = fleetingcontact

The contact type selected hereonly applies to the alarm contact.

F2Selection of timeunit

smin

Factory settings are printed in bold face;base version does not include functions in italics, but available as an option.

O234

Meas.val.

0.00µS/cm

O235

mA value

mA

4

O236

Status ok

yes

F

ALARM

F1

Cont.Type

Stead

F2

Time Unit

s

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26


Display Info

F3 Enter alarm delay0 s0 ... 2000 s (min)

Depending on the unit selectedin F2, the alarm delay is enteredin s or min.

F4Selection of errorcurrent

22 mA2.4 mA

This selection must be madeeven if all errors are suppressedin F5.

F5 Selection of error11 ... 255

This is where the errors areselected that are to trigger analarm signal. The errors areselected via the error number.Please refer to the table inchapter 7 for the error numbers.The factory settings remain ineffect for all errors not edited.

F6Set alarm contactto be effective forselected error

yesno

If set to “no”, all the other alarmsettings (e.g. alarm delay) arealso deactivated. The settingsthemselves are retained.This setting only applies to theerror selected in F5. Factorysetting is no starting with E080!

F7Set error currentto be effective forselected error

noyes

The error current selected inF4 becomes effective or issuppressed in case of error.This setting only applies to theerror selected in F5.

F8Automatic start ofcleaning function?

noyes

This field does not exist for someerrors; see chapter 7.1.

F9Return to menu orselect next error

next = next error<—-R

If next is selected, the displayreturns to F5.If <—-R is selected, the displayreturns to F.


F3

Err.Delay

0s

22mA F4

Err.Curr

F5

Sel.Error

1

yes F6

Rel.Assg

no F7

Curr.Assg

no F8

CleanTrig

F9

Select

next

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LM253E5A.CHP


27

5.4.2 Check (with S version only; available as an option)

Polarisation detection

Polarisation effects in the interface betweenelectrode and measuring solution limit themeasuring range of conductive conductivity

sensors. The ACM-X transmitter has the abilityto detect polarisation effects using anintelligent signal evaluation process.

PCS alarm (Process Check System)

This function is used to examine the measuringsignal for deviations. If the measuring signalis constant for a specific period of time (severalmeasured values), an alarm is issued. Thistype of sensor behaviour may be caused bysoiling, etc.

Note:

A current PCS alarm is automaticallydeleted as soon as the sensor signalchanges.

LIVE.CDR

Constant meas. signal= alarm is triggered

t

Fig. 5.4 PCS alarm (live-check)


Display Info

PFunction groupCHECK(S version only)

Settings for sensor and processmonitoring.

P1Switch polarisationdetection on or off(conductive only)

offon

Polarisation only occurs withconductive sensors.Polarisation is detected but notcompensated.(Error no.: E071.)

P2Set PCS alarm(live-check)

off1h2h4h

This function is used to examinethe measuring signal. An alarm issignalled if it does not change forthe period selected here.Monitoring limit: 0.3 % of meanvalue over selected period.(Error no.: E152.)


P

CHECK

P1

Pol.Detec

off

P2

PCS Alarm

off

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5.5 Relay contact configuration

The relay contacts described below can beselected and configured as required (up tofour with four contacts depending on optionsinstalled).

• Limit contactor for measured conductivityvalue: R2 (1)

• Limit contactor for temperature: R2 (2)• P(ID) controller: R2 (3)• Timer for cleaning function: R2 (4)• USP 23: R2 (6) (S version, conductive only)

5.5.1 Limit contactor for measured conductivity value and temperature

The relay contacts in the ACM-X can beassigned different functions.Switch-on and switch-off points and pickupand dropout delays can be defined for thelimit contactor. Moreover, an alarm thresholdcan be set to issue an error message and tostart a cleaning function.These functions may be used for conductivityand temperature measurement.

Please refer to Fig. 5.5 for a graphicrepresentation of the contact states of anyrelay or alarm contact.

When the measured value increases (maxfunction), the relay contact is closed at time t2when the switch-on point has been exceeded(t1) and the pickup delay (t2 – t1) has expired.When the alarm threshold (t3) is reached andthe alarm delay (t4 – t3) also has expired, thealarm contact is switched.When the measured value decreases, thealarm contact is reopened when themeasured value drops below the alarmthreshold (t5), and the relay contact alsoopens (t7, after the dropout delay t7 – t6).When the pickup and dropout delays are setto 0 s, the switch-on and switch-off points areidentical to the contact switching points.Settings analogous to the max function canalso be made for a min function.

5.5.2 P(ID) controller

The transmitter supports the definition ofvarious controller functions. On the basis ofthe PID controller, P, PI, PD and PIDcontrollers can be implemented. The

best control response is obtained using thecontroller best suited to the application inquestion:

GRENZ.CDR

Meas. value

Switch-on pointSwitch-off point

Alarm threshold

t1 t2 t4t3 t5 t7 tt6

Switch-on point > switch-off point: maximum function

Switch-on point < switch-off point: minimum function

Switch-on point

Switch-off point

t1 t2 t6 t7 t

Contact ON

Contact OFF

Contact ON

Contact OFF

Alarm ON

Alarm OFF

Fig. 5.5

Relationships betweenswitch-on and switch-offpoints and pickup anddropout delays

LM253E5B.CHP

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P controller: Used for simple linear controlpurposes with small system deviations. Wheremajor changes are to be controlled,overshooting may occur. A control offset is tobe expected.

PI controller: Used for processes whereovershooting is to be avoided and permanentoffsets are not allowed.

PD controller: Used for processes thatrequire quick response and where peaks areto be corrected.

PID controller: Used for processes for whichthe type of control provided by a P, PI or PDcontroller is inadequate.

Adjustments of P(ID) controller

Three parameters can be adjusted in thecase of a PID controller:

– the control gain Kp (P influence)– the integral action time Tn (I influence)– the derivative action time Tv (D influence)

Step response of process

y = set valueyh = control rangeTu = delay time [s]Tg = recovery time [s]

Vmax =

= maximum slew rate ofcontrol variable [K/s]

Xmax = maximum process valueXh = controller adjustment range

Controller characteristics

,

where set point = set point from R332.

Recommendable settings for all types

Contr. response K p [%] Tv [s] T n [s]

P K 0 0*

PI 2.6 K 0 6 Tu

PD 0.5 K Tu 0*

PID 1.7 K 2 Tu 2 Tu

* Tn = 0: component is not calculatedTn → ∞: calculated component → 0

Start-up

If there is no previous experience for thecontrol parameter settings, values should beused which guarantee maximum control loopstability (see table).

For optimisation, the control gain Kp is reduceduntil the control variable overshoots slightly.Then Kp is increased somewhat, and the Tnsetting is reduced (shorter times) to obtain theshortest possible correction time withoutovershooting.Tv must also be adjusted in the case of fastcorrection times.

REGEL01.CDR

100 %On

0 %Off

y

t

Xh

Tu Tg

∆x

∆t

Xmax

[%][°C]

yh

Fig. 5.6 Control characteristic

XT

xtg

max = ∆∆

KVX

Th

u= ⋅ ⋅max 100 %

y K eT

e T e epn

ii

vl l l l= ⋅ + ⋅ + −LNM

OQP

∗ ∗ ∗−

∗∑11e j

I comp. D comp.

eset point actual value

set point∗ −

=

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Checking and fine tuning of parameter settings using a recorder

Actuating signal outputs (R237 ... R2310)

The control contact in question outputs aswitched signal. The intensity of this signal isproportional to the controller’s control output.A distinction is made according to the type ofsignal output:

• Pulse length modulationThe greater the calculated control output,the longer the contact in question remainspicked up. The period can be adjustedbetween 0.5 and 99 s. Pulse length-modulated outputs are used to controlsolenoid valves.

• Pulse frequency modulationThe greater the calculated control output,the higher the switching frequency of thecontact. The maximum switchingfrequency 1/T can be adjusted between60 and 180 min–1. The ON period tON isconstant. Pulse frequency-modulatedoutputs are used to control solenoid-operated metering pumps.

REGEL02.CDR

Actualvalue

Actualvalue

Actualvalue

Actualvalue

Actualvalue

Tn too smallTn too large

Kp too largeKp too small

Optimal setting

Time

Time

Time

Time

TimeFig. 5.7

Optimisation of settingsfor Tn and Kp

IMPULS.CDR

tON

tOFF

On

Off

Period T Time [s]

Contact Contact

tON

T1 T2 Time [s]

On

Off

tON = 0.5⋅Tmax,user

Fig. 5.8

Signal of a pulselength-modulated (left)and a pulse frequency-modulated (right) controlcontact

LM253E5B.CHP

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Control characteristic for direct and inverted control action

Field R236 offers two control characteristicsfor selection which have the effects shown inthe following diagram.

5.5.3 USP 23 function (conductive only)

The transmitter ACM-X can measure andmonitor the uncompensated conductivity(R2 (6)) according to USP (“United StatesPharmacopeia”) guidelines.

USP requirements on measurement

The measurement is performed as follows:

• Measurement of uncompensatedconductivity

• Temperature measurement at place ofconductivity measurement

• Rounding of temperature to the next5 °C step

• Determination of applicable monitoringvalue from a table (see below)

• Alarm signalling in the event the monitoringvalue is exceeded.

The measurement is performed withoutcompensation, and the measured value iscompared to a monitoring value (see table)for pure water.An alarm is issued when the monitoring valueis exceeded.An adjustable pre-alarm can be used to alertto undesirable operating conditions in time.

X

X

w

w

100 %

100 %

Kp

pK

Y

Y

1

1

Direct

Inverted

REGEL03.CDRFig. 5.9

Control characteristic of aproportional controllerwith direct and invertedcontrol action

Temperature [°C] Conductivity [µS/cm] Temperature [°C] Conductivity [µS/cm]

0 0.6 55 2.1

5 0.8 60 2.2

10 0.9 65 2.4

15 1.0 70 2.5

20 1.1 75 2.7

25 1.3 80 2.7

30 1.4 85 2.7

35 1.5 90 2.7

40 1.7 95 2.9

45 1.8 100 3.1

50 1.9

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5.5.4 Timer for cleaning function

This function can be used to implement asimple cleaning routine. The user can specify

a time interval after which cleaning is to start;i.e. only constant intervals can be defined.

Wiper and / orspray cleaning system

active

inactive

Hold function

active

inactive

Cleaning time(0 ... 999 s)

Pause time between2 cleaning intervals

(1 ... 7200 min)

Clean-hold dwellperiod

(0 ... 999 s)

Time

DIAGR-TI.CDR Fig. 5.10

Relationships amongcleaning time, pause timeand hold dwell period

LM253E5B.CHP

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Display Info

RFunction groupRELAY

Relay contacts can be selectedand adjusted.

R1Selection ofcontact to beconfigured

Rel1Rel2Rel3Rel4

Rel3 and Rel4 are only availableon instruments equippedaccordingly.

R2 (1)

Configuration oflimit contactor forconductivity,resistance orconcentrationmeasurement

LC PV =limit contactor cd (1)LC °C =limit contactor T (2)PID controller (3)Timer (4)USP23 (6)

R211Switch function ofR2 (1) off or on

OffOn

All settings are retained.

R212Enter contactswitch-on point

cond/ind: 9999 mS/cmMOhm: 200 MΩ⋅cmconc: 9999 %entire meas. range

When the switch-on point isentered, the switch-off point isautomatically set to the samevalue. (Only the operating modeselected in A1 appears.)

R213Enter contactswitch-off point


The switch-off point entry selectsa max contact (switch-off point≤ switch-on point) or a mincontact (switch-off point> switch-on point), therebyimplementing a hysteresisfunction (see Fig. 5.5).

R214 Enter pickup delay0 s0 ... 2000 s

R215Enter dropoutdelay

0 s0 ... 2000 s

R

RELAY

Rel1 R1

Sel.Relay

LC PV R2

Sel. Type

Off R211

Function

9999mS/cm

R212

On value

9999mS/cm

R213

Off value

0s

R214

On Delay

0s

R215

Off Delay


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Display Info

R216Enter alarmthreshold (as anabsolute value)


When the alarm threshold isviolated, the measuringtransmitter issues an alarm withan error message and errorcurrent (note alarm delay).

R2 (2)

Configure limitcontactor fortemperaturemeasurement



OffOn

R222Enter switch-ontemperature

250.0 °C–35.0 ... 250.0 °C

R223Enter switch-offtemperature

250.0 °C–35.0 ... 250.0 °C

The switch-off point entry selectsa max contact (switch-off point≤ switch-on point) or a mincontact (switch-off point> switch-on point), therebyimplementing a hysteresisfunction (see Fig. 5.5).



0 s0 ... 2000 s

R226Enter alarmthreshold (as anabsolute value)

250.0 °C–35.0 ... 250.0 °C

When the alarm threshold isviolated, the measuringtransmitter issues an alarm withan error message and errorcurrent (note alarm delay).

9999mS/cm

R216

A.Thresh

LC °C R2

Sel. Type

Off R221

Function

250.0 R222

°C

On Value

250.0 R223

°C

Off Value

0 R224

s

On Delay

0 R225

s

Off Delay

250.0 R226

°C

A.Thresh

Factory settings are printed in bold face; base version does not include functionsin italics, jedoch optinal erhältlich.

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Display Info

R2 (3)P(ID) controllerconfiguration



OffOn

R232 Enter set point

cond/ind: 0.00 µS/cmMOhm: 0.00 kΩ⋅cmconc: 0.00 %entire meas. range

The set point is the value to bemaintained by the control. Thisvalue is to be re-established bythe control in the event of anydeviation (up or down).

R233Enter control gainKp

1.000.01 ... 20.00

See chpt. 5.5.2.

R234Enter integralaction time Tn(0.0 = no I comp.)

0.0 min0.0 ... 999.9 min

See chpt. 5.5.2.At every hold, the I comp. isset to zero.Hold can be deactivated inS2, but not for Timer.

R235Enter derivativeaction time Tv(0.0 = no D comp.)

0.0 min0.0 ... 999.9 min

See chpt. 5.5.2.

R236Selection ofcontrollercharacteristic

dir = directinv = inverted

Setting may or may not berequired depending on controldeviation (up or down deviation,see chpt. 5.5.2).

PID R2

Sel. Type

Off R231

Function

0.00µS/cm

R232

Setpoint

1.00 R233

Kp

0.0 R234

Time Tn

min

0.0 R235

Time Tv

min

dir R236

Direction


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Display Info

R237Selection of pulselength or pulsefrequency

len = pulse lengthfreq = pulse frequency

Pulse length e.g. for solenoid valve,pulse frequency e.g. for solenoid-operated metering pump (seechpt. 5.5.2).

R238 Enter pulse interval10.0 s0.5 ... 999.9 s

This field only appears if pulselength is selected in R237. Whenpulse frequency is selected,R238 is skipped and inputcontinues in R239.

R239Enter maximumpulse frequencyof actuator

120 min –1

60 ... 180 min–1

This field only appears if pulsefrequency is selected in R237.When pulse length is selected,R239 is skipped, and inputcontinues in R2310.

R2310Enter minimumON time tON

0.3 s0.1 ... 5.0 s

This field only appears if pulselength is selected in R237.

len R237

Oper.Mode

10.0 R238

PulsePer.

s

120 R239

Max.PFreq

1/min

0.3 R2310

Min.PTime

s


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37


Display Info

R2 (4)Configurecleaning function(timer)


Cleaning is performed using onlyone cleaning agent (usuallywater); see Fig. 5.10.


OffOn

R242Enter rinse /cleaning time

30 s0 ... 999 s

The hold and relay settings areactivated for the period of timespecified here.

R243 Enter pause time360 min1 ... 7200 min

The pause time is the timebetween two cleaning cycles(see chpt. 5.5.4).

R244Enter minimumpause time

120 min1 ... 3600 min

The minimum pause timeprevents continuous cleaningwhen the cleaning trigger ispresent.

Timer R2

Sel. Type

Off R241

Function

30 R242

RinseTime

s

360 R243

PauseTime

min

120 R244

Min.Pause

min

Factory settings are printed in bold face; base version does not include functionsin italics, jedoch optinal erhältlich.

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Display Info

R2 (6)USP contactconfiguration(S version only)


The USP contact can beconfigured as a pre-alarm,i.e. it issues an alarm beforethe limit is reached.(Error no.: E151.)


OffOn

R262Enter alarmthreshold(switch-on point)

80.0 %0.0 ... 100.0 %

This is referred to theuncompensated conductivityvalue at the temperature inquestion. The pre-alarm causesthe contact to respond; when thealarm limit is reached (100.0 %),the alarm relay is additionallyswitched. Example for 80.0 %setting: A pre-alarm is triggeredfor 15 °C and 1.0 µS/cm at0.8 µS/cm (cf. table in chpt. 5.5.3).

R263Enter switch-offpoint

80.0 %0.0 ... 100.0 %



0 s0 ... 2000 s

Factory settings are printed in bold face;base version does not include functions in italics.

USP23 R2

Sel. Type

Off R261

Function

80.0%

R262

On Value

80.0%

R263

Off Value

0 R264

s

On Delay

0 R265

s

Off Delay

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39

5.6 Temperature compensation

The temperature coefficient specifies thechange in conductivity per degree oftemperature change. It depends on thechemical composition of the medium andthe temperature itself.

In order to compensate for this dependence,four different compensation types can beselected in the ACM-X:

Linear compensation

The change between two temperature pointsis considered to be constant, i.e. α = const.The α value can be edited for the linearcompensation type. The reference temperatureis 25 °C.

NaCl compensation

The NaCl compensation (according toIEC 746) is based on a fixed nonlinear curvethat defines the relationship between thetemperature coefficient and the temperature.This curve is used for lower concentrations.

Ultrapure water compensation

Just like the NaCl compensation, the ultrapurewater compensation is based on a nonlinearcurve stored in the instrument.This curve is split up into NaCl solution andultrapure water components. These arecalculated separately but then used togetherto determine the overall relationship.

Conductivity(uncompensated)

1

α

Temperature TKOMPLIN.CDRFig. 5.11

Linear temperaturecompensation

Temperature [°C]

2.7

2.5

2.3

2.1

Tem

pera

ture

coef

ficie

ntα

[%/K

]

NACLKOMP.CDR

0 96 14448

Fig. 5.12 NaCl compensation

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Temperature compensation with table(S version only; available as an option)

The user can set up a table containing up toten value pairs for a special user-definedmedium so that the temperature dependenceof the temperature coefficient for any fluid canbe handled.

If the temperature coefficient for differenttemperatures is known, the correspondingvalues can be entered in the table. If thetemperature dependence of the medium isnot known, it first needs to be determined asfollows:

– Select the temperature range in which themeasurement is to take place.

– Take a sample of the process medium.– Measure the uncompensated conductivity

at different temperatures. Heat up thesample slowly to do this. Determine theuncompensated conductivity at differenttemperatures.

– The α value which corresponds to thetemperature and the conductivity value isdetermined using the following formula:

α(x) =

T(x) =

The values thus calculated are entered in thetable.

( 1) 1001

2

kk

T T

− ⋅

−2 1

T T1 2

2+

TAB01.CDR

T1 T(x) T2 T

k1

k2

k(x)

Fig. 5.13Determination oftemperature coefficient α(x)

TAB02.CDR

T1 T2 T3 T4 T(x)

α4α3

α2

α1

α(x)

Fig. 5.14Entry of table values withcalculated α(x)

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LM253E5C.CHP


41


Display Info

TFunction groupALPHA TABLE(S version only)

T1Selection of tableoption

readedit

T2Enter number oftable value pairs

11 ... 10

Up to 10 value pairs can beentered in the α table. These arenumbered from 1 ... 10 and canbe edited individually or insequence.

T3Selection of tablevalue pair

11 ... number of table

value pairsasign

T4Enter temperaturevalue (x value)

0.0 °C–35.0 ... 250.0 °C

The temperature values musthave a minimum distance of 1 K.Defaults for the x values of thetable value pairs:0.0 °C; 10.0 °C; 20.0 °C; 30.0 °C ...

T5Enter temperaturecoefficient α(y value)

2.10 %/K0.00 ... 20.00 %/K

T6Enter whether ornot the tablestatus is okay

yesno

If “yes”, return to T.If “no”, return to T3.

T

ALPHA TAB

T1

Sel.Table

read

T2

No.Elem.

1

T3

Sel.Elem.

1

T4

Temp.val.

0.0°C

T5

Alpha val

2.10%/K

T6

Status ok

yes


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5.7 Concentration measurement

The transmitter ACM-X in the S version canconvert conductivity values to concentrationvalues.

Since the relationship between concentrationand conductivity also depends on thetemperature, the conversion is performedbased on a user-defined field (threevariables: temperature, conductivity,concentration).

The calculation requires a field limited byuser-defined upper and lower limits (the8 values depicted in Fig. 5.15). The expectedmeasured values must be located in therange between the curves defined by the user(hatched area).The curve defined by the user must risemonotonically (as shown in Fig. 5.15) or fallmonotonically.

Note:

The temperature coefficient isdetermined as described in chpt. 5.6;the corresponding concentration isto be determined separately.

C-LF-T.CDRConductivity

Con

cent

ratio

n T1

T2

T1 < T2

Fig. 5.15

Relationship amongconcentration,conductivity andtemperature(qualitative representation)


Display Info

KFunction groupCONCENTRATION(S version only)

Four different concentration fieldscan be entered in this functiongroup.

K1

Selection ofconcentrationcurve to be usedto calculate thedisplay value

11 ... 4

The curves are independent ofeach other, i.e. four differentcurves can be defined.

K2Selection of tableto be edited

11 ... 4

When editing a curve, anothercurve should be used tocalculate the correspondingvalues (see K1).

K3Selection of tableoption

readedit

This selection applies to allconcentration curves.

K4Enter number oftriplets

11 ... 10

Each triplet consists of threenumeric values.

K

CONCENTRA

K11

act.Curve

K21

Table

K3read

Table

K4

No.Elem.

1


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5.8 Service


Display Info

K5 Selection of triplet11 ... number of

triplets in K4Any triplet can be edited.

K6Enteruncompensatedconductivity value

0.0 µS/cm0.0 ... 9999 mS/cm

K7Enterconcentrationvalue for K6

0.00 %0.00 ... 99.99 %

K8Enter temperaturevalue for K6

0.0 °C–35.0 ... 250.0 °C

K9Enter whether ornot the tablestatus is okay

yesno

Return to K2.


Display Info

SFunction groupSERVICE

S1 Selection oflanguage

ENG = EnglishGER = GermanFRA = FrenchITA = ItalianNEL = DutchESP = Spanish

This field must be configuredonce during start-up. Then youcan exit S1 and continue.

S2 Hold configuration

S+C = during setup+ calibration

CAL = duringcalibration

Setup = during setupnone = no hold

S = setup,C = calibration.

K5

Sel.Elem.

1

K6

conduct.

0.0µS/cm

K7

concentr.

0.0%

K8

Temp.val.

0.0°C

K9

Status ok

yes

S

SERVICE

ENG S1

Language

S+C S2

Auto HOLD


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Display Info

S3 Manual holdoffon

S4Enter hold dwellperiod

10 s0 ... 999 s

S5Enter SW upgraderelease code(S-Ausführung)

00000000 ... 9999

Entry of an incorrect code returnsyou to the measurement menu.The number is edited with thePLUS or MINUS key andconfirmed with the ENTER key.

S600000000 ... 9999

Reserved,no function at present

S7Order number isdisplayed

Internal order code

S8Serial number isdisplayed

S9

Reset ofinstrument(restore defaultvalues)

noSens = sensor dataFacty = factory settings

Facty = All data are erased andreset to the factorysettings!

Sens = The sensor data areerased.

S10Performinstrument test

noDispl = display test

off S3

Man. HOLD

10 S4

Cont.Time

s

0000 S5

PlusCode

0000 S6

CleanCode

order S7

CD0005

SerNo S8

12345678

no S9

S.Default

no S10

Test


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5.9 KOBOdata


Display Info

EFunction groupKOBOdata

E1Selection ofmodule

Contr = controller (1)Trans = transmitter (2)MainB = mainboard (3)Relay = relay (4)

E111E121E131E141

Softwareversionis displayed

This field cannot be edited.

E112E122E132E142

Hardwareversionis displayed


E113E123E133E143

Serial number isdisplayed


E

KOBOdata

ContrE1

Select

xx.xx E111

SW-Vers.

xx.xx E112

HW-Vers.

SerNo E113

12345678


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5.10 Calibration

This function group is used to calibrate thetransmitter. Two different types of calibrationare possible:

• Calibration by measurement in a calibrationsolution of a known conductivity.

• Calibration by entry of the exact cell constantof the conductivity sensor.

Note:

• If the calibration procedure isaborted by pressing the PLUS andMINUS keys at the same time(return to C114, C126 or C136) orif the calibration is faulty, then theprevious calibration data arereinstated. A calibration error isindicated by the “ERR” messageand flashing of the sensor symbolon the display.Repeat calibration!

• The instrument is automaticallyswitched to hold during calibration(factory setting).


Display Info

CFunction groupCALIBRATION

C1 (1)

Calibration ofinductive sensorswith a ring-shapedopening

Airs = Airset (1)cellc = cell constant (2)InstF = installation

factor (3)

For conductive measurement,Airs and InstF are not available.

The calibration of the cell is to beperformed in air. The cell mustbe dry.

Remove measuring cell from the medium and dry in air.

C111Residual couplingStart calibration(Airset)

current meas. value Start calibration with CAL.

C112Residual couplingis displayed(Airset)

–80.0 ... 80.0 µSResidual coupling of measuringsystem (sensor and transmitter).

C

CALIBRAT

AirS C1

Calibrat

0.0 C111

AirSet

µS/cm

5.3 C112

AirSetVal

µS/cm


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Display Info

C113Calibration statusis displayed

o.k.E xxx

If the calibration status is not o.k.,then the second display lineshows an explanation of the error.

C114Store calibrationresults?

yesnonew

If C113 = E xxx, then only noor new.If new, return to C.If yes/no, return to “Measurement”.

C1 (2)

Calibration of cellconstant(inductive andconductivesensors


factor (3)

Immerse sensor in calibration solution.

The sensor should be immersedat a sufficient distance from thevessel wall (installation factor hasno influence).

C121Enter calibrationtemperature (MTC)

25.0 °C–35.0 ... 250.0 °C

Only exists if B1 = fixed.

C122α value ofcalibration solution

2.10 %/K0.00 ... 20.00 %/K

This value is given with eachcalibration solution.

C123

Enter correctconductivity valueof calibrationsolution

current meas. value0.0 ... 9999 mS/cm

The practical range is dependson the measuring cell, i.e. thecalibration solution should be atapprox. 40 % of the measuringrange determined by the cell(see chpt. 8, Fig. 8.2).The display unit is always mS/cm.

C124Calculated cellconstantis displayed

0.0025 ... 99.99 cm–1 The calculated cell constant isdisplayed and entered in A5.


o.k.E xxx


o.k. C113

Status

yes C114

Store

cellc C1

Calibrat

25.0 C121

MTC temp.

°C

2.10 C122

alpha val

10.30 C123

Real val.

mS/cm

1.000 C124

cellconst

1/cm

o.k. C125

Status


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Display Info


yesnonew


C1 (3)

Calibrationwith sensoradaptation forinductive sensors(S version only)


factor (3)

Sensor calibration withcompensation of wall influence.

The sensor remains at the place of installation.

C131Enter calibrationtemperature (MTC)

25.0 °C–35.0 ... 250.0 °C

Only exists if B1 = fixed.

C132α value ofcalibration solution

2.10 %/K0.00 ... 20.00 %/K

This value is determined by thecalibration solution.

C133

Enter correctconductivity valueof calibrationsolution

current meas. value0.0 ... 9999 mS/cm

The practical range is dependson the measuring cell, i.e. thecalibration solution should be atapprox. 40 % of the measuringrange determined by the cell(see chpt. 8, Fig. 8.2).The display unit is always mS/cm.

C134Calculatedinstallation factoris displayed

10.10 ... 5.00


o.k.E xxx



yesnonew


Factory settings are printed in bold face;base version does not include functions in italics.

yes C126

Store

InstF C1

Calibrat

25.0 C131

MTC temp.

°C

2.10 C132

alpha val

10.30 C133

Real val.

mS/cm

1 C134

InstFact

o.k. C135

Status

yes C136

Store

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6 Maintenance and troubleshooting

6.1 Definition of terms

Maintenance means that all measures whichwill guarantee the safety of operation andreliability of the entire measuring system aretaken in due time.

Maintenance on the ACM-X includes:- Calibration (see chpt. 5.10)- Cleaning of assembly and sensor- Checking of cables and connections

Troubleshooting means that the cause of theproblem is determined and eliminated.Troubleshooting refers to measures that canbe performed without intervention in theinstrument.

Troubleshooting of the ACM-X and themeasuring system is performed with the aid ofthe troubleshooting table in chpt. 6.3.

6.2 Safety instructions

Warning:

Please be aware of effects workperformed on the instrument mighthave on the process control systemor the process itself.

Warning:

When removing the sensor duringmaintenance or calibration, pleaseconsider potential hazards due topressure, high temperatures andcontamination.

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Maintenance and troubleshooting KOBO-LF ACM-X

50

6.3 Troubleshooting common problems

Problem Possible cause Remedy Equipment needed, spare parts

Display deviates fromreference measurement

– Calibration faulty Calibrate instr. acc. to chpt. 4.8 Cal. solution or cell certificate

– Sensor soiled Clean sensor

– Incorrect temperaturemeasurement

Check temperature value oninstrument and reference unit

Temp. meas. instr., thermometer

– Incorrect temp. compensation Check compensation mode (none /ATC / MTC) and compensationtype (linear/subst./user table)

Please note: ACM-X has aseparate calibration temperaturecoefficient setting

– Reference instrument calibrationfaulty

Calibrate reference instrument oruse calibrated instrument

Calibration solution, operatinginstructions of reference instrument

– Incorrect ATC setting onreference instrument

Compensation mode andcompensation type must beidentical on both instruments

Oper. instr. of reference instrument

– Polarisation error Use suitable sensor:– use larger cell constant– use graphite in place of stainless

steel (resistance requirements)

Measuring range tables, e.g. in SI“Conductivity” or technical data ofconductivity measuring cells

Implausible measuredvalues in general:– meas. value

overflow– meas. value always

000– meas. value too low– meas. value too high– meas. value frozen– incorrect current

output value

– Short in sensor Check sensor

– Short in cable or junction box Check cable and junction box

– Interruption in sensor Check sensor

– Interrupt. in cable or junction box Check cable and junction box

– Incorrect cell constant setting Check cell constant Sensor nameplate or certificate

– Incorrect current assignment Check current assignment

– Incorrect output function Check 0-20 / 4 -20 mA selection

– Air cushion in assembly Check assembly and installation

– Short to ground on/in instrument Measure in insulated container Plastic container, cal. solutions

– Transmitter module defective Simulation directly on instrument

– Impermissible instrumentoperating state (no response tokey actuation)

Switch instrument off and back on EMC problem: check groundingand line routing if problem persists

Incorrect temperaturevalue

– Incorrect sensor connection Verify connections usingconnection diagram; three-wireconnection mandatory

Connection diagram in chpt. 3.4

– Measuring cable defective Check cable for interruption/short/shunt

Ohmmeter

– Incorrect sensor type Select sensor type on instrument(field B1)

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KOBO-LF ACM-X Maintenance and troubleshooting

51


Incorrect conductivitymeas. value in process

– No / incorrect temperaturecompensation

ATC: select compensation type;linear: set correctcoefficient

MTC: set process temperature

– Incorrect temperaturemeasurement

Check temperature value Reference instrument, thermometer

– Bubbles in medium Suppress bubble formation:- gas bubble trap- counterpressure (cover)- bypass measurement

– Polarisation effects (conductivesensors only)

Use suitable sensor:- use larger cell constant,- use graphite in place of stainless

steel (resistance requirements)

Measuring range tables, e.g. in SI“Conductivity”, or technical data ofconductivity sensors

– Flow rate too high (may causebubbles)

Reduce flow or chooselow-turbulence mounting position

– Potential in medium(conductive only)

Ground medium close to meas. cell Problem mainly occurs in plasticlines and tanks

– Sensor soiled or coated Clean sensor Heavily soiled media: use spraycleaning

Measured valuefluctuates

– Measuring cable interference Connect cable screen acc. toconnection diagram

See chpt. 3.5

– Signal output line interference Check line routing, try separate linerouting

Separate routing of signal outputand meas. input lines

– Interference potential in medium Eliminate source of interference orground medium close toconductivity sensor

Controller or timercannot be activated

– No relay module installed Install LSR1-2 or LSR1-4 module

Controller / limit contactdoes not work

– Controller switched off Activate controller See chpt. 5.5 or fields R2xx

– Controller in “Manual / Off” mode Choose “Auto” or “Manual / On”mode

Keyboard, REL key

– Pickup delay setting too long Disable or shorten pickup delay See fields R2xx

– “Hold” function active “Autom. hold” during calibration,“hold” input activated;“hold” via keyboard active

See fields S2 to S4

Controller / limit contactworks continuously

– Controller in “Manual / On” mode Set controller to “Manual / Off” or“Auto”

Keyboard, REL and AUTO keys

– Dropout delay setting too long Shorten dropout delay See fields R2xx

– Control loop interruption Check measured value, currentoutput or relay contacts, actuators,chemical supply

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No conductivity currentoutput signal

– Line open or short-circuited Disconnect line and measuredirectly on instrument

mA meter 0–20 mA

– Output defective

Fixed current outputsignal

– Current simulation active Switch off simulation See field O2

– Processor system out of sync Switch instrument off and back on EMC problem: check installation ifproblem persists

Incorrect current outputsignal

– Incorrect current assignment Check current assignment:0–20 mA or 4–20 mA?

Field O211

– Total load in current loopexcessive (> 500 Ω)

Disconnect output and measuredirectly on instrument

mA meter for 0–20 mA DC

No temperature outputsignal

– Instrument does not have 2ndcurrent output

Refer to nameplate for variant;change LSCH-x1 module if nec.

LSCH-x2 module

S package functions notavailable

– S package not enabled (enablewith code that depends on serialnumber and is received withorder of S package)

– S package upgrade:code received ⇒ enter

– Following replacement ofdefective LSCH/LSCP module:first enter instrument serialnumber (s. nameplate) manually,then enter code

Detailed description

LM253E07.CHP

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6.4 Problem elimination based on error messages

Errorno.

Display MeasuresContact Error current

Automaticcleaning trigger

Fact. User Fact. User Fact. User

E001 EEPROM memory error Switch instrument off and back on, returninstrument to your local sales agency forrepair or replace instrument.Load software compatible with hardware.Load instrument software specific toparameter measured.

yes no — —*

E002

Instrument not calibrated,calibration data invalid,no user data or user datainvalid(EEPROM error)Software does not matchhardware (central module)

yes no — —*

E003 Invalid configuration

E007Transmitter malfunctionSoftware does not matchhardware (transmitter)

yes no — —*

E008 Sensor or sensorconnection faulty

Check sensor and sensorconnection (Service).

yes no no

E010

No temperature sensorconnected or temperaturesensor short-circuited(temperature sensorfaulty)

Check temperature sensor andconnections;if necessary, check instrument withtemperature simulator.

yes no no

E025 Limit for Airset offsetexceeded

Repeat Airset (in air) or replace sensor.Dry cell.

yes no no

E036 Calibration range ofsensor exceeded

Clean sensor and recalibrate; ifnecessary, check sensor and connections.

yes no no

E037 Below calibration range ofsensor

yes no no

E045 Calibration aborted Recalibrate. yes no — —*

E049Calibration range ofinstallation factorexceeded

Check pipe diameter, clean sensorand repeat calibration.

yes no — —*

E050 Below calibration range ofinstallation factor

Check pipe diameter, clean sensorand repeat calibration.

yes no — —*

E055 Below measuring range ofmain parameter

Immerse sensor in conductive medium orperform Airset.

yes no no

E057 Measuring range of mainparameter exceeded

Check measurement, control andconnections.

yes no no

E059 Below temperaturemeasuring range

yes no no

E061 Temperature measuringrange exceeded

yes no no

E063 Below current outputrange 1

Check configuration. yes no no

E064 Current output range 1exceeded

Check measured value and currentassignment.

yes no no


Check measured value and currentassignment.

yes no no

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54

Errorno.

Display MeasuresContact Error current

Automaticcleaning trigger

Fact. User Fact. User Fact. User


yes no no

E067 Set value exceeded:contr. / limit contactor 1

yes no no


yes no no


yes no no


yes no no

E071 Inaccurate measurement /polarisation

Clean sensor; check table; choosesuitable measuring cell

yes no no

E077 Temperature outsideα value table range

Clean sensor; check tables. yes no no

E078 Temperature outsideconcentration table

yes no no

E079 Conductivity outsideconcentration table

yes no no

E080 Current output 1 param.range too small

Spread current output. no no — —*

E081 Current output 2 param.range too small

Spread current output. no no — —*

E100 Current simulation active no no — —*

E101 Service function yes Switch service function off orswitch instrument off and back on.

no no — —*

E102 Manual mode active

E106 Download yes Wait for download to end. no no — —*

E116 Download error Repeat download. no no — —*

E150

Distance between temp.values in α value table toosmall or not monotonicallyincreasing

Enter correct values in α value table(minimum distance between temperaturevalues of 1 K required).

no no no

E151 USP error no no no

E152 PCS alarm Check sensor and connection. no no no

E153 USP temperature error no no no

*When this error is present, the cleaning function cannot be started.(Field F8 does not exist for this error.)

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7 Technical data

Input Measured variables conductivity, resistance, concentration, temperature

Minimum distance for 0 / 4 ... 20 mA signal

Conductivity measurement meas. value 0 ... 19.99 µS/cm: 2 µS/cmmeas. value 20 ... 199.9 µS/cm: 20 µS/cmmeas. value 200 ... 1999 µS/cm: 200 µS/cmmeas. value 2 ... 19.99 mS/cm: 2 mS/cmmeas. value 20 ... 2000 mS/cm: 20 mS/cm

Resistance measurement meas. value 0 ... 199.9 kΩ ·cm: 20 kΩ ·cmmeas. value 200 ... 1999 kΩ ·cm: 200 kΩ ·cmmeas. value 2 ... 19.99 MΩ ·cm: 2.0 MΩ ·cmmeas. value 20 ... 200 MΩ ·cm: 20 MΩ ·cm

Concentration measurement no minimum distance

Conductive conductivity / resistance measurement

Measuring range conductivity: 0 ... 400 mS/cm (uncompensated)resistance: 0 ... 200 MΩ ·cmconcentration: 0 ... 9999 %

Usable cell constant k = 0.0025 ... 99.99 cm–1

Maximum cable length to measuring cell conductivity: 100 mresistance: 15 m

Measuring frequency conductivity: 299.75 ... 1077.6 Hzresistance: 32.5 ... 425 Hz

Inductive conductivity measurement

Measuring range 0 ... 2000 mS/cm (uncompensated)

Usable cell constant k = 0.0025 ... 99.99 cm–1

Maximum cable length to sensor 55 m (CLK 5)

Measuring frequency 2 kHz

Temperature measurement

Temperature sensor Pt 100, Pt 1000, NTC

Measuring range –35 ... +250 °C

Temperature offset range ±5.0 °C

Temperature compensation

Compensation types linear, NaCl, table, (conductive only:) ultrapure water

Range –35 ... +250 °C

Reference temperature 25 °C

Digital inputs 1 and 2

Voltage 10 ... 50 V

Current consumption max. 10 mA

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%Ω°C Technical data KOBO-LF ACM-X

56

Output Conductivity / resistance signal output

Current range 0 / 4 ... 20 mA, galvanically isolated; error current 2.4 / 22 mA

Load max. 500 Ω

Maximum resolution 700 digits/mA

Output range adjustable

Separation voltage max. 350 Vrms / 500 V DC

Overvoltage acc. to EN 61000-4-5:1995

Temperature signal output (optional)

Current range 0 / 4 ... 20 mA, galvanically isolated

Load max. 500 Ω

Maximum resolution 700 digits/mA

Output range adjustable, ∆ 10 ... ∆ 100 % of upper range value

Separation voltage max. 350 Vrms / 500 V DC

Overvoltage acc. to EN 61000-4-5:1995

Auxiliary voltage output

Output voltage 15 V ± 0.6 V

Output current max. 10 mA

Contact outputs (potential-free changeover contacts)

Switching current with ohmic load (cos ϕ = 1) max. 2 A

Switching current with inductive load (cos ϕ = 0.4) max. 2 A

Switching voltage max. 250 V AC, 30 V DC

Switching power with ohmic load (cos ϕ = 1) max. 1250 VA AC, 150 W DC

Switching power with inductive load (cos ϕ = 0.4) max. 500 VA AC, 90 W DC

Limit contactor

Pickup / dropout delay 0 ... 2000 s

Controller

Function (adjustable) pulse length / pulse frequency controller

Controller response P, PI, PD, PID

Control gain Kp 0.01 ... 20.00

Integral action time Tn 0.0 ... 999.9 min

Derivative action time Tv 0.0 ... 999.9 min

Period for pulse length controller 0.5 ... 999.9 s

Frequency for pulse frequency controller 60 ... 180 min–1

Alarm

Function (switchable) steady / fleeting contact; NC / NO contact

Alarm threshold adjustment range conductivity / resistance / temperature / concentration / USP:entire measuring range

Alarm delay 0 ... 2000 s (min)

OBOLD

%Ω°C

LM253E11.CHP

KOBO-LF ACM-X Technical data

57

Accuracy Conductivity measurement

Display deviation1 max. 0.5 % of meas. value ± 4 digits

Repeatability max. 0.2 % of meas. value ± 2 digits

Measurement deviation1, conductivity signal output 0.75 % of current output range

Resistance measurement

Display deviation1 max. 0.5 % of meas. value ± 4 digits

Repeatability max. 0.2 % of meas. value ± 2 digits

Measurement deviation1, resistance signal output 0.75 % of current output range

Temperature measurement

Measured value resolution 0.1 °C

Display deviation1 max. 1.0 % of measuring range

Measurement deviation1, temperature signal output max. 1.25 % of current output range

Ambient conditions Ambient temperature (nom. operating conditions) –10 ... +55 °C

Ambient temperature (limit operating conditions) –20 ... +60 °C

Storage and transport temperature –25 ... +65 °C

Relative humidity (nom. operating conditions) 10 ... 95 %,non-condensing

Protection class of panel-mounted unit IP 54 (front), IP 30 (housing)

Protection class of field housing IP 65

Electromagnetic compatibility interference emission and interference immunityacc. to EN 61326-1:1997

Physical data Dimensions of panel-mounted unit (H × W × D) 96 × 96 × 145 mm

Installation depth approx. 165 mm

Dimensions of field housing (H × W × D) 247 × 170 × 115 mm

Weight of panel-mounted unit max. 0.7 kg

Weight with field housing max. 2.3 kg

Measured value display LC display, two lines, five and nine digits, with statusindicators

Materials

Housing of panel-mounted unit polycarbonate

Front membrane polyester, UV-resistant

Field housing ABS PC Fr

Power supply Supply voltage 100 / 115 / 230 V AC +10 / –15 %, 48 ... 62 Hz24 V AC/DC +20 / –15 %

Power consumption max. 7.5 VA

Mains fuse fine-wire fuse, medium time-lag, 250 V / 3.15 A

1According to IEC 746-1, for nom. operating conditions

Subject to modifications.

OBOLD

%Ω°C Technical data KOBO-LF ACM-X

58

8 Appendix

C1

(1)

Fun

ctio

n gr

oup

CA

LIB

RAT

ION

C

Cal

ibra

tion

Inst

F=

inst

alla

tion

fact

or

cellc

= c

ell c

onst

ant

AirS

= A

irset

C1

(2)

C1

(3)

Mea

surin

gra

nges

:

0 µS

/cm

...99

99m

S/c

m0

...99

99%

0 ...

200

Mcm

–35.

0 ...

250

°CΩ

⋅

Res

idua

l cou

plin

gS

tart

cal

ibra

tion

Cur

rent

mea

s.va

lue

Dis

play

of r

esid

ual c

oupl

ing

(air-

set)

0.0

µSC

112

Cal

ibra

tion

stat

usis

disp

laye

d

o.k.

;E

---

C11

3

Sto

reca

libra

tion

resu

lts ; no;

new

yes

C11

4C

111

Sto

reca

libra

tion

resu

lts ; no;

new

yes

C12

6

Cal

ibra

tion

tem

pera

ture

entr

y(if

B1

= fi

xed)

–35.

0 ...

+25

0.0

C25

.0C

.

°°

C12

1

Ent

ryof

valu

eof

calib

ratio

nso

lutio

n

0.00

... 2

0.00

%/K

α

2.10

%/K

C12

2

Ent

ryof

cor

rect

cond

uctiv

ityva

lue

ofca

libat

ion

solu

tion

0.0

µS/c

m...

9999

mS

/cm

. Cur

rent

mea

s.va

lue

C12

3

Dis

play

of c

alcu

late

dce

llco

nsta

nt

0.00

25 ..

. 99.

99 1

/cm

C12

4

Cal

ibra

tion

stat

usis

disp

laye

d

o.k.

;E

---

C12

5

Sto

reca

libra

tion

resu

lts ; no;

new

yes

C13

6

Ent

ryof

valu

eof

calib

ratio

nso

lutio

n

0.00

... 2

0.00

%/K

α

2.10

%/K

C13

2

Cal

ibra

tion

tem

pera

ture

entr

y(M

TC

)

–35.

0 ...

+25

0.0

C25

.0C°

°C

131

Ent

ryof

cor

rect

cond

uctiv

ityva

lue

ofca

libra

tion

solu

tion

0.0

µS/c

m...

9999

mS

/cm

Cur

rent

mea

s.va

lue

.

C13

3

Dis

play

of c

alcu

late

din

stal

latio

nfa

ctor

0.10

... 5

.01.

0

C13

4

Cal

ibra

tion

stat

usis

disp

laye

d

o.k.

;E

---

C13

5

F unc

tion

grou

p

SE

TUP

1

ME

AS

.VA

LUE

DIS

PLA

Y

with

TEM

PE

RAT

UR

ED

ISP

LAY

in°C

A

Sel

ectio

n of

ope

ratin

gm

ode

= co

nduc

tive

ind

= in

duct

ive

MO

hm=

resi

stan

ceco

nc=

conc

entra

tion

cond

A1

Sel

ectio

nof

unit

disp

laye

d S/c

m;m

S/c

m;S

/cm

;µS

/m;m

S/m

;S/m

auto

; kcm

;Mcm

;k

auto

; ΩΩ

⋅

µ

Ω⋅

Ω⋅

m(o

mitt

edif

A1

=co

nc)

Unc

ompe

nsat

edm

easu

red

valu

eis

disp

laye

d

A4

Dis

play

form

atse

lect

ion

(ifA

1=

conc

)

; X.x

xx; X

XX

.x; X

XX

XX

X.x

x

Tem

pera

ture

disp

lay

supp

ress

ed

A3

Sel

ectio

nof

unit

disp

laye

d

; mg/

l;%

; non

e;TD

S(%

only

ifA

1=

conc

)p p

m

Tem

pera

ture

disp

lay

in°F

Sel

ectio

nw

ithP

LUS

key

Sel

ectio

nw

ithM

INU

Ske

y

Edit mode:Code 22

Read mode:any code

Edit mode:Code 22

Read mode:any code

A2

Oth

er e

rror

sar

edi

spla

yed

(up

to10

erro

rs)

1st e

rror

isdi

spla

yed

(ifpr

esen

t)

Ent

ryof

cell

cons

tant

cond

/ ind

/ M

0.00

25...

99.9

91/

cmfo

rin

d;co

nd; M

Ω

Ω

1.00

0/ 1

.98

/ 0.0

11/

cm

A5

Ent

ryof

cab

lere

sist

ance

(if A

1 =

cond

)

0.00

0.00

Ω ..Ω

. 99.

99A

6

Ent

ryof

mea

sure

dva

lue

dam

ping

(no

dam

ping

)1

...60

1

A7

Fun

ctio

n gr

oup

SE

TU

P 2

B

Sel

ectio

n fo

r te

mpe

ratu

rem

easu

rem

ent

Pt1

k(=

Pt 1

000)

NT

C (

= N

TC

30

k

Pt1

00

Ω)

fixed

B1

Sel

ectio

n of

tem

pera

ture

com

pens

atio

n ty

pe

none

Tab

= ta

ble

NaC

I = s

alt

Pur

e=

ultr

apur

e w

ater

lin =

line

ar

B2

Ent

ryof

valu

e(if

B2

= li

n)

0.00

... 2

0.00

%/K

α

2.10

%/K

B3

Ent

ryof

cor

rect

proc

ess

tem

pera

ture

(ifB

1=

fixe

d)

25.0

°C–3

5.0

°C ..

. +25

0.0

°C

B4

Tem

pera

ture

sen

sor

calib

ratio

n(n

o di

spla

yif

B1

= fi

xed)

–35.

0 ...

+25

0.0

Dis

pla

y of

act

ual v

alue

°C

B5

Dis

play

of te

mpe

ratu

redi

ffere

nce

(om

itted

ifB

1=

fixe

d)

0.0

°C–5

.0 ..

. 5.0

°C

B6

Fie

ldfo

ren

try

ofus

erse

tting

p.47

p.22

p.23

LM253E11.CHP

OBOLD

KOBO-LF ACM-X Appendix

59

Sel

ect a

larm

dela

yun

it

; min

sF

2

Ala

rmde

lay

0 s

...20

00 s

(min

)(d

epen

dson

F2)

0 s

(min

)

F3

Err

orcu

rren

tse

tting

2.4

mA

22 m

AF

4

Err

ornu

mbe

rse

lect

ion

1 ...

255

1F

5

Set

alar

mco

ntac

tto

be

effe

ctiv

e

; no

yes

F6

Act

ivat

eer

ror

curr

ent

for

prev

ious

lyse

ter

ror ye

sno

;F

7F

8

Aut

omat

icst

art o

fcl

eani

ngfu

nctio

n; y

es(n

ot a

lway

sdi

spla

yed,

see

erro

r m

essa

ges)

no

F9

Sel

ect "

next

erro

r"or

ret

urn

to m

enu

=ne

xtne

xt e

rror

R←

Fun

ctio

n gr

oup

ALA

RM

F

Sel

ect c

onta

ct ty

pe

Fle

et=

flee

ting

cont

act

Ste

ad=

stea

dy

cont

act;

F1

Fun

ctio

n gr

oup

CH

EC

K

P

Sw

itch

pola

risa

tion

dete

ctio

n on

or

off

; on

off

P1

P2

PC

Sal

arm

setti

ng(li

ve-c

heck

)

/ 1h

/ 2h

/ 4h

off

Mon

itori

nglim

it0.

3 %

of m

ean

valu

eov

er ti

me

peri

oden

tere

d

Fun

ctio

n gr

oup

CU

RR

EN

TO

UT

PU

T

O

Cur

rent

out

put s

elec

tion

; Out

2O

ut1

O1

Cha

ract

eris

ticse

lect

ion

tabl

e

sim

= s

imul

atio

n

lin =

line

arO

2(1

)

O2

(2)

Sim

ulat

ion

valu

een

try

0 ...

22.0

0 m

Acu

rren

t val

ue

O22

1

O2

(3)

Tabl

eop

tion

sele

ctio

n

edit

read

O23

1

Ent

ryof

num

ber

ofva

lue

pairs

inta

ble

1 ...

101

O23

2

Sel

ectio

n of

valu

epa

irin

tabl

e

1 ...

num

ber

of v

alue

pairs

asig

n

1

O23

3

xva

lue

entr

y(m

easu

red

valu

e)

entir

em

easu

ring

rang

e

0 µS

/cm

/ 0 k

cm/

0 %

/ 0 °

CΩ

⋅

O23

4

yva

lue

entr

y(c

urre

ntva

lue)

0 ...

20.0

0 m

Aen

tire

mea

suri

ngra

nge

4.00

mA

O23

5

Tabl

est

atus

ok

noye

s;

O23

6

Cur

rent

ran

gese

lect

ion

0–20

mA

4–20

mA

;

O21

1O

212

Ent

ryof

20

mA

val

ue

entir

em

easu

ring

rang

e

2000

mS

/cm

/ 500

k·c

m/

9999

%/ 1

50.0

°C

Ω

O21

3

Ent

ryof

0/4

mA

val

ue

entir

em

easu

ring

rang

e

0 µS

/cm

/ 0 k

·cm

/0

%/ 0

°C

Ω

Mea

surin

gra

nges

:

0 µS

/cm

...99

99m

S/c

m0

...99

99%

0 ...

200

Mcm

–35.

0 ...

250

°CΩ

⋅

p.26

p.28

p.24

OBOLD

Appendix KOBO-LF ACM-X

60

Fun

ctio

nof

Sw

itch

off o

ron

On

R2

(6)

Off;

R26

1

Ent

ry o

f ala

rm th

resh

old

(sw

itch-

onpo

int)

0.0

...10

0.0

%80

%

R26

2

Ent

ry o

f sw

itch-

off

poin

t

0.0

...10

0.0

%80

%

R26

3

Pic

kup

dela

yen

try

0...

2000

s0

Dro

pout

dela

yen

try

0...

2000

s0

R26

4R

265

R

Fun

ctio

ngr

oup

RE

LAY

Sel

ect c

onta

ctto

beco

nfig

ured

Rel

2;R

el3;

Rel

4R

el1;

R1

Fun

ctio

nof

Sw

itch

off o

ron

On

R2

(1)

Off

;

R21

1

Sel

ect c

onta

ctsw

itch-

onpo

int

entir

em

eas.

rang

e

9999

mS

/cm

/ 20

0M

cm/

9999

%Ω

⋅ R21

2

Sel

ect c

onta

ctsw

itch-

off p

oint

entir

em

eas.

rang

e

9999

mS

/cm

/ 20

0M

cm/

9999

%Ω

⋅ R21

3

Pic

kup

dela

yse

tting

0...

2000

s0

s

R21

4

Dro

pout

del

ayse

tting

0...

2000

s0

s

R21

5

Set

ting

ofal

arm

thre

shol

d(a

s an

abso

lute

valu

e)

entir

em

eas.

rang

e

9999

mS

/cm

/ 20

0M

cm/

9999

%Ω

⋅ R21

6

Fun

ctio

nof

Sw

itch

off o

ron

On

R2

(2)

Off

;

R22

1

Ent

ry o

f sw

itch-

onte

mpe

ratu

re

250.

0°C

–35.

0...

+25

0.0

°C

R22

2

Ent

ry o

f sw

itch-

off

tem

pera

ture

250.

0°C

–35.

0...

+25

0.0

°C

Pic

kup

dela

yse

tting

0...

2000

s0

s

R22

4R

223

Dro

pout

del

ayse

tting

0...

2000

s0

s

R22

5

Set

ting

ofal

arm

thre

shol

d

250.

0°C

–35.

0...

+25

0.0

°C

R22

6

Fun

ctio

nof

Sw

itch

off o

ron

On

R2

(3)

Off

;

R23

1

Ent

ry o

f set

poin

t

entir

em

eas.

rang

e

0µS

/cm

/ 0k

cm/

0%

Ω⋅

R23

2

Ent

ry o

fco

ntro

l gai

nK

p

0.01

...20

.00

1.00

R23

3

Ent

ry o

f int

egra

l act

ion

time

Tn

(0.0

=no

I com

pone

nt)

0.0

...99

9.9

min

0.0

min

R23

4

Ent

ry o

f der

ivat

ive

actio

ntim

eT

v(0

.0=

noD

com

pone

nt)

0.0

...99

9.9

min

0.0

min

R23

5

Sel

ectio

nof

cont

rol c

hara

cter

istic

;in

v =

inve

rted

dir

=di

r ect

R23

6

Sel

ectio

n

freq

=pu

lse

freq

uenc

yle

n=

puls

ele

ngt

h

R23

7

Ent

ry o

f min

. ON

time

t 0.1

...5.

0s

ON

0.3

s

R23

10

Ent

ry o

f max

.pu

lse

freq

uenc

y

60...

180

1/m

in12

01/

min

R23

9

Ent

ry o

fpu

lse

inte

rval

0.5

...99

9.9

s10

.0s

R23

8

Fun

ctio

nof

Sw

itch

off o

ron

On

R2

(4)

Off

;

R24

1

Rin

setim

ese

tting

0...

999

s30

s

R24

2

Pau

setim

ese

tting

1...

7200

min

360

min

R24

3

Set

min

imum

paus

etim

e

1...3

600

min

120

min

R24

4

Lim

itco

nta

cto

rco

nfig

ura

tio

n

US

P

Tim

er

PID

co

ntr

olle

r

LC

°C=

Tlim

itco

nta

cto

r

LC

PV

=co

nd

.lim

itc

on

tact

or

R2

(1)

R2

(2)

R2

(3)

R2

(4)

R2

(6)

Mea

surin

gra

nges

:

0µS

/cm

...99

99m

S/c

m0

...99

99%

0...

200

Mcm

–35.

0...

250

°CΩ

⋅

p.34

LM253E11.CHP

OBOLD

KOBO-LF ACM-X Appendix

61

Sof

twar

eve

rsio

n

SW

vers

ion

E12

1

Har

dwar

eve

rsio

n

HW

vers

ion

E12

2

Ser

ial n

umbe

ris

disp

laye

d

E12

3

Sof

twar

eve

rsio

n

SW

vers

ion

E11

1

Har

dwar

eve

rsio

n

HW

vers

ion

E11

2

Ser

ial n

umbe

ris

disp

laye

d

E11

3

Fun

ctio

ngr

oup

SE

RV

ICE

S

Lang

uage

sele

ctio

n

GE

RIT

A; F

RA

ES

P; N

EL

EN

G;

S1

Hol

dco

nfig

urat

ion

- no

ne=

noho

ld-

=s+

cdu

ring

setu

pan

dca

libra

tion

- C

AL

=du

ring

calib

ratio

n-

Set

up=

durin

gse

tup

S2

Sof

twar

eve

rsio

n

SW

vers

ion

E13

1

Har

dwar

eve

rsio

n

HW

vers

ion

E13

2

Ser

ial n

umbe

ris

disp

laye

d

E13

3

Sof

twar

eve

rsio

n

SW

vers

ion

E14

1

Har

dwar

eve

rsio

n

HW

vers

ion

E14

2

Ser

ial n

umbe

ris

disp

laye

d

E14

3

Ent

ry o

fho

lddw

ell p

erio

d

0...

999

s10

s

S4

Man

ual h

old

onof

f;

S3

Ent

ry o

f SW

upgr

ade

rele

ase

code

(plu

s pa

ckag

e)

0000

...99

9900

00S

5

Ent

ry o

f SW

upgr

ade

rele

ase

code

(z. Z

t.oh

neF

unkt

ion)

0000

...99

9900

00

S6

inte

rne

Ord

er n

umbe

r

S7

Ser

ial n

umbe

r is

disp

laye

d

S8

Res

et in

stru

men

t(r

esto

rede

faul

t val

ues)

Sen

s =

sens

or d

ata;

Fact

y =

fact

ory

setti

ngs

no;

S9

Per

form

inst

rum

ent t

est

;D

ispl

=di

spla

yno

S10

Fun

ctio

ngr

oup

KO

BO

data

E

Mod

ule

sele

ctio

n

Rel

ay

Mai

nB=

mai

nboa

rd

Tran

s=

tran

smitt

er

Con

tr =

cont

rolle

rE

1(1

)

E1

(2)

E1

(3)

E1

(4)

Fun

ctio

ngr

oup

ALP

HA

TA

BLE

Ent

ry o

f num

ber

ofta

ble

valu

epa

irs

1...

101

Tabl

eop

tion

sele

ctio

n

edit

read

T2

Sel

ectio

nof

tabl

eto

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OBOLD

Appendix KOBO-LF ACM-X

62

9 Index

AA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22A1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22A2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22-23A3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22A5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23A6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23A7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Access codes . . . . . . . . . . . . . . . . . . . . . . . 19Actuating signal outputs . . . . . . . . . . . . . . . 31ALARM (F) . . . . . . . . . . . . . . . . . . . . . . . . . . 26Alarm contact. . . . . . . . . . . . . . . . . . . . . . . . 27Alarm delay . . . . . . . . . . . . . . . . . . . . . . . . . 27Alarm threshold . . . . . . . . . . . . . . . . . . . 35, 39ALPHA TABLE (T) . . . . . . . . . . . . . . . . . . . . 42Alpha value entry . . . . . . . . . . . . . . . . . . . . . 24AUTO key. . . . . . . . . . . . . . . . . . . . . . . . . . . 15Auto mode . . . . . . . . . . . . . . . . . . . . . . . . . . 16Automatic cleaning trigger . . . . . . . . . . . . . 54Automatic start of cleaning . . . . . . . . . . . . . 27

BB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23B1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23B2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23B3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24B4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24B5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24B6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

CC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47C1 (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47C1 (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . 48-49Cable length. . . . . . . . . . . . . . . . . . . . . . . . . 12CAL key . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Calibration . . . . . . . . . . . . . . . . . . . . . . . 19, 47Calibration mode . . . . . . . . . . . . . . . . . . 17, 20Calibration of inductive cells . . . . . . . . . . . . 47Calibration of temperature sensor . . . . . . . . 24Calibration w. meas. cell adaptation . . . . . . 49CHECK (P) . . . . . . . . . . . . . . . . . . . . . . . . . . 28Cleaning function . . . . . . . . . . . . . . . . . . . . . 38Cleaning trigger . . . . . . . . . . . . . . . . . . . . . . 27CLK 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Complete installation . . . . . . . . . . . . . . . . . . . 6Complete measuring system. . . . . . . . . . . . . 6CONCENTRATION (K). . . . . . . . . . . . . . . . . 43Concentration measurement . . . . . . . . . . . . 43Connection diagram . . . . . . . . . . . . . . . . . . 10Connection, examples . . . . . . . . . . . . . . . . . 13Contact selection . . . . . . . . . . . . . . . . . . . . . 26Control characteristic. . . . . . . . . . . . . . . 32, 36CURRENT OUTPUT (O). . . . . . . . . . . . . . . . 24Current output table . . . . . . . . . . . . . . . . . . . 25Current outputs . . . . . . . . . . . . . . . . . . . . . . 24

DDamage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Declaration of conformity . . . . . . . . . . . . . . . 5Delivery, scope of . . . . . . . . . . . . . . . . . . . . . 2Derivative action time . . . . . . . . . . . . . . . . . 36Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 7Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Display during measurement . . . . . . . . . . . 19Disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Dropout delay . . . . . . . . . . . . . . . . . . 34-35, 39

EElectrical connection. . . . . . . . . . . . . . . . . . 10ENTER key. . . . . . . . . . . . . . . . . . . . . . . . . . 15Error current . . . . . . . . . . . . . . . . . . . . . . . . 27Error messages . . . . . . . . . . . . . . . . . . . . . . 54Error selection . . . . . . . . . . . . . . . . . . . . . . . 27Escape function. . . . . . . . . . . . . . . . . . . . . . 15Extension of measuring cable. . . . . . . . . . . 12

FF. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26F1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26F2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26F3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27F4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27F5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27F6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27F7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27F8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27F9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Factory settings. . . . . . . . . . . . . . . . . . . . . . 20Freezing of outputs . . . . . . . . . . . . . . . . . . . 19Function coding. . . . . . . . . . . . . . . . . . . . . . 20Function group . . . . . . . . . . . . . . . . . . . . . . 18Fuse. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

GGeneral . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3General safety instructions . . . . . . . . . . . . . . 4

HHardware version . . . . . . . . . . . . . . . . . . . . 46Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Hold dwell period . . . . . . . . . . . . . . . . . . . . 45Hold function . . . . . . . . . . . . . . . . . . . . . . . . 19

IImmunity to interference . . . . . . . . . . . . . . . . 5Inquiries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Installation . . . . . . . . . . . . . . . . . . . . . . . 4, 6-13Instrument configuration . . . . . . . . . . . . . 20-28Integral action time . . . . . . . . . . . . . . . . . . . 36Intended application . . . . . . . . . . . . . . . . . . . 4

JJunction box VBM . . . . . . . . . . . . . . . . . . . . 12

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KK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43K1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43K2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43K3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43K4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43K5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44K6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44K7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44K8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44K9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44Key functions . . . . . . . . . . . . . . . . . . . . . . . . 15Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15KOBOdata (E). . . . . . . . . . . . . . . . . . . . . . . . 46Kp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

LLanguage selection . . . . . . . . . . . . . . . . . . . 44LED indicators . . . . . . . . . . . . . . . . . . . . . . . 14Limit contactor . . . . . . . . . . . . . . . . . . . . 29, 34Limit contactor for meas. conductivity value 29Limit contactor for temperature . . . . . . . 29, 35Linear characteristic . . . . . . . . . . . . . . . . . . . 24Liquid crystal display . . . . . . . . . . . . . . . . . . 14

MMaintenance and troubleshooting . . . . . 50-55Manual hold . . . . . . . . . . . . . . . . . . . . . . . . . 45Manual mode . . . . . . . . . . . . . . . . . . . . . . . . 16Measurement display . . . . . . . . . . . . . . . . . . 19Measuring cable . . . . . . . . . . . . . . . . . . . . . . 12Measuring cable connection . . . . . . . . . . . . 12Measuring cell adaptation . . . . . . . . . . . . . . 49Measuring cell installation . . . . . . . . . . . . . . 12Measuring mode. . . . . . . . . . . . . . . . . . . . . . 20Measuring system. . . . . . . . . . . . . . . . . . . . . . 6Menu structure . . . . . . . . . . . . . . . . . . . . . . . 18Minimum pause time . . . . . . . . . . . . . . . . . . 38MINUS key . . . . . . . . . . . . . . . . . . . . . . . 15, 19Monitoring features . . . . . . . . . . . . . . . . . . . . . 5Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Mounting examples . . . . . . . . . . . . . . . . . . . . 9Mounting of field instrument . . . . . . . . . . . . . . 8

OO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24O1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24O2 (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24O2 (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25O2 (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25ON time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Operating concept . . . . . . . . . . . . . . . . . . . . 17Operating mode . . . . . . . . . . . . . . . . . . . . . . 17Operation . . . . . . . . . . . . . . . . . . . . . . 4, 14-19Operator interface. . . . . . . . . . . . . . . . . . . . . 14Order number . . . . . . . . . . . . . . . . . . . . . . . . 45

PP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28P controller . . . . . . . . . . . . . . . . . . . . . . . . . . 30P(ID) controller . . . . . . . . . . . . . . . . . . . . . . . 29P1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28P2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Panel-mounted instrument . . . . . . . . . . . . . . . 9Pause time . . . . . . . . . . . . . . . . . . . . . . . . . . 38PCS alarm . . . . . . . . . . . . . . . . . . . . . . . . . . 28PD controller. . . . . . . . . . . . . . . . . . . . . . . . . 30PI controller . . . . . . . . . . . . . . . . . . . . . . . . . 30Pickup delay. . . . . . . . . . . . . . . . . . . 34-35, 39PID controller . . . . . . . . . . . . . . . . . . . . . 30, 36PLUS key . . . . . . . . . . . . . . . . . . . . . . . . 15, 19Polarisation detection. . . . . . . . . . . . . . . . . . 28Post mounting on a square post . . . . . . . . . . 8Post mounting on cylindrical pipes . . . . . . . . 8Pre-alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Process temperature . . . . . . . . . . . . . . . . . . 24Product structure . . . . . . . . . . . . . . . . . . . . . . 3Programming . . . . . . . . . . . . . . . . . . . . . . . . 18Pulse frequency . . . . . . . . . . . . . . . . . . . . . . 37Pulse frequency modulation . . . . . . . . . . . . 31Pulse length . . . . . . . . . . . . . . . . . . . . . . . . . 37Pulse length modulation. . . . . . . . . . . . . . . . 31

RR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34R1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34R2 (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34R2 (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35R2 (3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36R2 (4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38R2 (6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39REL key . . . . . . . . . . . . . . . . . . . . . . . . . 15-16Relay contact configuration . . . . . . . . . . . . . 29RELAYS (R) . . . . . . . . . . . . . . . . . . . . . . . . . 34Rinse time. . . . . . . . . . . . . . . . . . . . . . . . . . . 38

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SS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44S1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44S10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45S2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44S3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45S4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45S5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45S6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45S7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45S8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45S9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5Safety features . . . . . . . . . . . . . . . . . . . . . . . . 5Safety instructions . . . . . . . . . . . . . . . . . . 4, 50Selection of time unit . . . . . . . . . . . . . . . . . . 26Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20SERVICE (S). . . . . . . . . . . . . . . . . . . . . . 22, 44SETUP 1 (A) . . . . . . . . . . . . . . . . . . . . . . . . . 22SETUP 2 (B) . . . . . . . . . . . . . . . . . . . . . . 22-23Setup mode . . . . . . . . . . . . . . . . . . . . . . 17, 20Shipping documents . . . . . . . . . . . . . . . . . . . 2Simulation. . . . . . . . . . . . . . . . . . . . . . . . . . . 25Software version. . . . . . . . . . . . . . . . . . . . . . 46Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Start-up menu . . . . . . . . . . . . . . . . . . . . . . . 22Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Structure of coding . . . . . . . . . . . . . . . . . . . 20Structure of measuring cables. . . . . . . . . . . 12SW upgrade . . . . . . . . . . . . . . . . . . . . . . . . . 45Switch-off point of contact . . . . . . . . . . . . . . 34Switch-off temperature. . . . . . . . . . . . . . . . . 35Switch-on point of contact . . . . . . . . . . . . . . 34Switch-on temperature. . . . . . . . . . . . . . . . . 35Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Symbols used . . . . . . . . . . . . . . . . . . . . . . . . 2System configuration . . . . . . . . . . . . . . . . . . 22

TT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42T1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42T2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42T3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42T4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42T5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42T6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Technical data. . . . . . . . . . . . . . . . . . . . . 56-58Temperature coefficient . . . . . . . . . . . . . . . 40Temperature compensation . . . . . . . . . . . . 23Temperature sensor . . . . . . . . . . . . . . . . . . 23Tensioning screws . . . . . . . . . . . . . . . . . . . . 9Termination of measuring cables . . . . . . . . 12Time unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Timer for cleaning function . . . . . . . . . . 29, 33Tn. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Troubleshooting common problems. . . . . . 51Tv . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

UUnpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . 2USP 23. . . . . . . . . . . . . . . . . . . . . . . . . . 29, 39USP 23 function. . . . . . . . . . . . . . . . . . . . . . 32

WWall monting . . . . . . . . . . . . . . . . . . . . . . . . . 8

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Germany

KOBOLD Messring GmbHNordring 22-24D-65719 Hofheim/Taunus +49 (0)6192 299-0Fax +49 (0)6192 23398E-mail:[email protected]

TB-West 140597 Düsseldorf 0180 5562653Fax 0180 5567329

TB-West 253902 Bad Münstereifel 0180 5562653Fax 0180 5567329

TB-Hessen98596 Trusetal 0180 5562653Fax 0180 5567329

TB-Baden-Württemberg72124 Pliezhausen 0180 5562653Fax 0180 5567329

TB-Bayern-Nord90763 Nürnberg 0180 5562653Fax 0180 5567329

Germany

KOBOLD Messring GmbHWerk ll • formerly:Dr. HENSCHEN GmbHDruck- undTemperaturmeßtechnikMahdentalstraße 4471065 Sindelfingen +49 (0)7031/8677-0Fax +49 (0)7031/8677-40

France

KOBOLD Instrumentation S.A.R.L.B.P. 9051F-95046 Cergy-Pontoise Cedex +33 (0)134219115Fax +33 (0)134219218E-mail: [email protected]

Belgium

KOBOLD Instrumentatie NV/SASt.-Amandsstraat 2B-1853 Strombeek-Bever +32 (0)2-2672155Fax +32 (0)2-2673414E-mail: [email protected]

Great Britain

KOBOLD Instruments Ltd.Kobold House8-9 Brunts Business CentreSamuel Brunts WayMansfieldNottinghamshireNG18 2AH +44 (0)1623-427701Fax +44 (0)1623-427702E-mail: [email protected]

Argentinia

KOBOLD Instruments S.A.Bernardo de Irigoyen 1717(1602) Florida-Argentina +54 (0)11-4760 8300Fax +54 (0)11-4 760 3484E-mail: [email protected]

Venezuela

KOBOLD Instruments C.A.Urb. La Soledad Av. CentralEdif. Cambalache, Planta AltaMaracay 2101, Edo. AraguaVenezuela +58 (0)43-322102 - 333654Fax +58 (0)43-323033E-mail: [email protected]

Netherlands

KOBOLD Instrumentatie BVSchaapsdrift 117NL 6824 GR Arnhem +31 (0)263-844848Fax +31 (0)263-844840E-mail: [email protected]

KOBOLD Instrumentatie BVRotterdam Officein preparation

Switzerland

KOBOLD Instruments AGBirchlenstraße 46CH-8600 Dübendorf 1 +41 (0)1-8019999Fax +41 (0)1-8019998E-mail: [email protected]

Austria

KOBOLD Instruments Ges.m.b.H.Gurkgasse 8A-1140 Wien +43 (0)1-7865353Fax +43 (0)1-7865353-10E-mail: [email protected]

China

KOBOLD InstrumentsTrading (Shanghai) Co., Ltd.17/F Suncome-Cimic TowerNo. 800 Shang Cheng RoadPudong New District,Shanghai 200120, PR China+ 86-21-68754206,

68754579, 68754729Fax +86-21-68752149E-mail: [email protected]

KOBOLD InstrumentsTrading (Shanghai) Co., Ltd.Shenyang OfficeRoom 1019, Sankei Torch BuildingNo. 262 Sifu Street,Shenhe District,110013 Shenyang, China +86-24-22791460Fax +86-24-22791009

USA

KOBOLD Instruments Inc.1801 Parkway View DriveUSA-Pittsburgh, PA 15205 +1 412 -788-2830Fax +1 412-788-4890E-mail: [email protected]

KOBOLD Eastern RegionCharlotte, NC 28226 +1 704 362 4800Fax +1 704 362 4801E-mail: [email protected]

KOBOLD Central RegionGreenfield, WI 53228 +1 414 789 7830Fax +1 414 789 7826E-mail: sbroadwell@koboldusa

KOBOLD Western RegionScottsdale, AZ 85258 +1 480 595 9636Fax +1 480 595 9667E-mail: [email protected]

Canada

KOBOLD Instruments Canada Inc.9A de L’Aviation, Pointe Claire,Quebec H9R 4Z2 +1-514 428-8090, 769-5550Fax +1-514 428-8899E-mail: [email protected]

KOBOLD Instruments Canada Inc.Toronto Officein preparation

Singapore

KOBOLD InstrumentsSingapore PTE LTDBlock 196 Pandan Loop# 07-04Pantech Industrial ComplexSingapore 128384 +65 -7789667 (3 Lines)Fax +65 -7789691E-mail: [email protected]

Poland

PL-50 Wroclawin preparation

BA 193e02/02.00Printed in Germany / CV5

51502111

OBOLD

... also in more than 60 countriesthrough more than 110 distributors.

measuring

monitorin

analysing

Operating Instructions · BA 193e02/02.00 No. 51502111 valid from software version 2.0 upward KOBO-LF ACM-X Transmitter for Conductivity Operating Instructions OBOLD ISO 9001

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