8388-mmy170

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IM O1OM/O1/e/06.96 Hygrotec MMY 170 Trace Moisture Analyser

Featuring moisture unit dewpoint in ppmv, temperature measurement and compensation, E+H bus communication, and optional measurement of ppmw in liquids.

Installation and Operation Manual

IMA Limited Parkwell House

Otley Road Guiseley

West Yorkshire LS20 8BH England

Tel: +44 (0)1943 878877 Fax:+44 (0)1943 879988

e-mail: [email protected] Website: www.ima.co.uk

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Endress+Hauser reserves the right to change or modify our product appearance and specifications at any time and without notice. Therefore, information in this document is subject to change without notice and does not represent a commitment on the part of Endress+Hauser

No part of this manual may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose without the express written permission of Endress+Hauser.

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Contents 1.0 General System Information 1.1 Unpacking and Inspection............................................................5 1.2 Introduction......................................................................5 1.3 MMY170 Series Analyser................................................6 1.4 DY 75 Probe....................................................................7 1.5 Theory of Operation ........................................................8 1.6 System Specifications .....................................................9 1.6.1 Probe Specifications...............................................9 1.6.2 Analyser Specifications ..........................................9 2.0 Installation Guidelines................................................. 11 2.1 Mounting the Probe......................................................................11 2.1.1 Inline Mounting .......................................................11 2.1.2 Bypass Mounting....................................................11 2.1.3 Mounting in a Sample System................................12 2.2 Mounting the Analyser.....................................................13 2.2.1 Checking the Set-Up of the Monorack Power Supply 13 2.3 Analyser Connection .......................................................15 2.3.1 Analyser in Monorack Enclosure - Connection Detail 16 2.4 Description of the Hygrotec MMY 170 Programming Matrix 17 2.4.1 Special Functions of the Push Buttons...................18 2.4.2 Locking/Unlocking/Factory Reset Functions...........19 2.4.3 Functions of the Matrix ...........................................20 3.0 Troubleshooting..................................................... 33 3.1 Calibration Table..........................................................................33 3.2 Error Codes ....................................................................34 3.2.1 Error Code E 201 ...................................................34 3.2.2 Error Code E 202 ...................................................34 3.2.3 Error Code E 401 ...................................................35 3.2.4 Error Code E 402 ...................................................35 3.2.5 Error Code E 400 ...................................................36 3.2.6 Error Codes E 602 to E 607 ...................................36 3.2.7 Error Codes E 608 and E 610 ................................36 3.2.8 Error Codes E 613 and E 614 ................................36 3.2.9 Error Codes E 106, E107, E 301, E 302, E 600,and E 601..............................................................36 3.3 Probe Replacement/Recalibration...................................37 3.3.1 Probe Removal/Replacement ........................................37 3.3.2 Repackaging for Shipment.............................................37 3.3.3 Reprogramming of the Analyser Upon Return of a Probe from the Factory .....................................................................38

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4.0 Option: Moisture Unit ppmv.......................................................40 4.1 Moisture Measurement in Liquids .......................................................... 40 4.1.1 Display and Output Mode ............................................................. 41 4.1.2 SelectionofC5lables ....................................................................... 41 4.1.3 Changing from ‘‘Normal Mode to Simulation/Calibration Mode ..... 41 4.2 Preprogrammed (10) Saturation Concentration (Cs) Values.................. 42 4.3 Saturation Concentration Table ............................................................. 43 4.4 Vapor Pressure Conversion Table......................................................... 46

5.0 Intrinsic Safety .....................................................................48 5.1 (Ex) Protection....................................................................................... 48 5.2 Area of Application ................................................................................ 48 5.3 Intrinsically Safe Circuit ......................................................................... 48 5.4 Arrangement of Lightning Protection...................................................... 49.

6.0 Bus Communication Reference Documentation..............50 Appendix

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1.0 General System Information 1.1 Unpacking and Inspection Upon receipt of the Hygrotec MMY 170, examine the shipping carton for broken or open packing, distortion, or any other evidence of mishandling. If inspection indicates damage to the unit or any of its components, notify the carrier (within 15 days of delivery) and request an inspection. Move the carton to a clean work area and unpack. The carton you receive should contain:

o Hygrotec MMY 170 Analyser o DY 75 Probe o Probe Cable o Installation and Operation Manual

Unpacking

1.2 Introduction

The Hygrotec MMY 170 is a microprocessor controlled dewpoint/ppmv analyser consisting of a Endress+Hauser gold/aluminum oxide probe (DY 75) and the MMY 170 electronics module (analyser). The Hygrotec measures moisture in dewpoint temperature in the range of ---90°C to +20°C ppmv from 0.01 to 9999, and temperature for compensation. Its four digit LCD displays the measured value. Process control is obtained with two current outputs, two voltage outputs, two alarm relays, and one system alarm relay. The Hygrotec’s direct user access provides simple setting and editing of the user’s parameters utilizing its six push buttons and matrix-style programming structure. Multi-channel configuration is obtained utilizing the E+H bus and the computer interface ZA 672. (Refer to Field Communication, ZA 672 Modbus Gateway.) To set parameters more conveniently, the Commulog VU 260 Z can be connected to each module. Any sensor is affected by temperature. In order to minimize these effects, temperature compensation is carried out using factors which are calculated during factory calibration. (See page 33.)

Introduction

The measuring system consists of: o up to 64 Commutec transmitters or 128 measuring points o ZA 672 gateway o personal computer at the command port o Commulog o PC communication Software Fig. I

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Monorack Enclosure Fig 2 Panel Mount Housings Fig 3

1.3 MMY 170 Series Analyser The Hygrotec MMY170 analyser in the following enclosures:

Dimensions in mm

Panel Mount Version 1 Panel Mount Version 2

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1.4 DY75 Probe The Standard Hygrotec DY75 probe is illustrated below:

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Fig. 5 Calibration Curve

1.5 Theory of Operation The moisture sensor of each DY 75 probe changes capacitance with moisture changes in the process stream. The capacitance changes are converted into an interference-free PFM (Pulse Frequency Modulation) signal by the probe’s electronics. This technology allows the use of up to 1000 metres of ordinary interconnecting cable between the probe and the analyser, since noise does not interfere with the (PFM) signal. Temperature is measured with platinum RTD and values are transmitted via PFM signals.

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1.6 System Specifications 1.6.1 Probe Specifications Sensing element for moisture: Planar gold/aluminum oxide, capacitance principle

Sensing element for temperature: Platinum resistor RTD

Calibration range: -80°C to +20°C dewpoint temperature; below -80 0C trend measurement

Recommended recalibration cycle: 6 to 24 months, depending on the application and required accuracy

Calibration accuracy: ± 1 °C dewpoint at +20 °C (ambient temperature)

Repeatability ± 1 °C

Maximum relative humidity: 50% at dewpoint temperatures >0 °C

Temperature coefficient: <0.2 °C /°C

Drift: < 4 °C/year

Ambient and storage temperature: -60 °C to +50 °C

Nominal operating temperature: -20 °C to +40 °C

Maximum operating pressure: 350 bar

Helium leak-rate: < 10-7 mbar I/s

Maximum gas velocity: 50.0 m/s at 1 bar 5.0 m/s at 10 bar

0.5 m/s at 100 bar

Signal transmission: Pulse Frequency Modulation (PFM) via three-wire cable; Moisture signal, I-signal, and common return

Probe Mounting adapter: Stainless steel 1.4571 with G 1/2 thread (DIN/ISO 228) and O-ring seal out of Fluor Caoutchouc (SMK)

Rating: I P 65

Torque when tightening: 50 Nm

Wrench width: 30 mm

Optional: Protective cap with 10 µm filter

Weight: 830 grams

1.62 Analyser Specifications Electronics: Microprocessor controlled Temperature Unit: °C Moisture units. Dewpoint temperature in °C and concentration in ppmv (concentration in ppmw optional) Instrument range: -100 °C to +20 °C standard, 0.01 to 9999 ppmv and ppmw

Display: Four character LCD with bar graph 010 100% and two control fields

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Signal input: Galvanically isolated, PFM three-wire technology, intrinsically safe, certified (EEx ia) IIC Outputs: Two current outputs 0/4 to 20 mA selectable into maximum of 500 Ω load: Two voltage outputs 0/2 to 10 V selectable, minimum of 10 kΩ load; programmable range, damping, and fail-safe mode (i.e., mm/max/hold) two alarm relays SPDT dry contacts rating 2,5 A, max. 250 V AC, max. 300 VA at cos ϕ <0,7, max. 100 W at 100 V DC, programmable setpoints, fail-safe mode min or max, and hysteresis; one system alarm, rating same as above, triggered by the self-diagnostics program Rackbus: Serial bus connections to Endress+Hauser communication interface ZA 672 User interface: Six push-buttons for display manipulation, setting parameters and functions utilizing the Endress+Hauser matrix Supply power: 24 V DC, tolerance 20 to 30 V DC, max. 2 V ripple within the tolerance, max. 125 mA Analyser module: Formatted to Europa Card, 100 x 160 mm, fitting into Endress+Hauser RACKSYST, electrical connection via 28 pin plug DIN 41612 Front panel: 7 pitch (35 mm), black plastic with blue overlay Enclosures: Monorack wall mount, 65 x 165 x 200 mm with integral power supply (selectable voltage 220/110 V AC, 200/100 V AC, or 48/24 V AC); panel mount version 1,144 x 48 x 200 mm (requires 24 V DC power supply); panel mount version 2,144 x 192 x 260 mm (requires NT 470 220/115 V AC power supply); this version supports up to four Hygrotec MMY 170 analysers with one NT 471 power supply; cable connection via screw terminals Protection: P20 Weight: Electronics module: Electronics module: 0,3 kg Monorack: 1,3 kg Panel Mount Version 1: 1,3 kg Panel Mount Version 2: 3,0 kg

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Inline Mounting Fig.7 Bypass Mounting Fig. 8 Caution! Caution ! Close both bypass valves before servicing the probe.

2.0 Installation Guidelines 2.1 Mounting the Probe 2.1.1 Inline Mounting Prior to installation of the probe, insure that no contaminants are present in the pipeline (e.g. oil or soot in existing pipelines or oil residue in new pipelines). The presence of contaminants results in an increase in the response time of sensors as well as inaccurate measurements. Therefore, the pipelines should be thoroughly (and routinely) cleaned with a suitable solvent and dried with a dry gas prior to installing the probe. (For further details, refer to the ‘‘General Hints for Trace Moisture Measurement’’ manual.) Mount the probe vertically such that the sensor tip points down. The probe is typically mounted in a G ½ pipe thread connection. Insure that the tip of the probe does not touch the inside wall of the pipe. 2.12 Bypass Mounting Utilizing a bypass line assures no interruption of the process stream during servicing of the probe. To mount the probe in a bypass, the above procedure for in-line mounting should be followed. Caution should be exercised when re-opening the bypass after a probe has been serviced as this may contaminate the main stream. Stream

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Mounting in a Sample System Fig. 9

2.1.3 Mounting in a Sample System (Figure 9) If the gas velocity or temperature of an application exceeds the probe specifications on page 9 or if particulates are entrained in the stream, a sample system should be used. In a sample system with low dewpoints, all wetted parts should be of stainless steel. (For further details, refer to the ‘‘General Hints for Trace Moisture Measurement’ manual.) While the probe’s measured value is not flow sensitive, the flow rate in a sample system influences the response time of the system. A flow rate of 30 to 150 I/h through the flow cell is ideal. In addition, the sample gas temperature in the flow cell must remain above the dewpoint temperature to prevent condensation. (If dewpoint is 0 °C, maintaining a +10 °C difference is recommended.) Figure 9 illustrates a basic sample system.

PRIOR TO REMOVING THE PROBE, BE CERTAIN THAT THE FLOW CELL IS NOT U

(a) If measurement is desired under

system pressure: Valve 1 is fully open and the sample flow is regulated by Valve 2.

(b) If measurement is desired under

atmospheric pressure: Valve 2 is fully open and the sample flow is regulated by Valve 1. NOTE: 1,5 m of 6 mm tubing, if vented to atmosphere, will insure accuracy of sample in the

flow cell (avoiding back diffusion). CAUTION! PRIOR TO REMOVING THE PROBE< BE CERTAIN THAT THE FLOW CELL IS NOT UNDER PRESSURE!

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IF PRESSURE EXISTS IN THE FLOW CELL WHEN THE PROBE IS REMOVED, THIS COULD RESULT IN AN EXTREMELY DANGEROUS SITUATION, THREATENING TO BOTH LIFE AND LIMB!

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Mounting the Analyser Fig. 10 Fig. 11

2.2 Mounting the Analyser When mounting the Hygrotec MMY 170 analyser, the connecting cable to the probe can be up to 1000 metres long. In addition, appropriate mounting hardware should be used and all wiring should conform with local electrical codes and standards. The Monorack enclosure is typically mounted to a wall. 2.2.1 Checking the Set-Up of the Monorack Power Supply This section is relative only to the Monorack enclosure. For the Hygrotec MMY 170 in either of the two Panel Mount enclosures, skip this section and proceed to Section 2.3, page 15, for wiring details.

The Monorack’s built-in power supply contains a switchable line power converter. To access this converter: (a) Insure that no power exists to the

analyser. (b) Open the two panel latches, located

above and below the front panel. Carefully pull the Hygrotec electronics module straight out of the Monorack enclosure (refer to Figure 10).

(c) Upon removal of the electronics module, locate the two flat head screws and loosenthem. (d) Grasping the Monorack enclosure with both hands carefully pull the black terminal connection section away from the

front section of the enclosure and set it aside (refer to Figure11).

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Fig. 12

(e) Looking into the back of the Monorack’s front section, locate the line converter (upper right corner). Ensure that the jumpers are positioned for the voltage corresponding to the power that will be supplied to the Hygrotec. To move the jumper, lift it off its contact pins, position the jumper according to diagram, and carefully push it down until it is completely seated back on the contact pins. Figure 12 illustrates the two voltage ranges available and the corresponding positions of the jumper.

NOTE: THERE ARE TWO OTHER VERSIONS AVAILABLE, IF SPECIFIED ON THE ORDER FOR THE ENCLOSURE:

1. 100/200VAC,or 2. 24/48VAC

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Fig. 13 Fig.14 Fig. 15

2.3 Analyser Connection The connection diagram in Figure 13 illustrates the appropriate contact pins to use when connecting the Hygrotec analyser to its probe and outputs. Recheck all connections for security and correct placement of wires. (Severe damage can result from incorrect wiring.)

Looking onto the contact pins of the Hygrotec electronics module or the connection side of the female connector in the mounting rail.

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Fig. 16

2.3.1 Analyser m Monorack Enclosure - Connection Detail This section is relative only to the Monorack enclosure. The contact pins of the Hygrotec electronics module plug into the black terminal connection section of the Monorack enclosure. Actual hard wiring of the analyser to its probe, outputs and power cord is performed at the terminal connection section (refer to Figure 16). When making these connections, all wiring should conform with local electrical codes and standards. Recheck all connections for security and correct placement of wires. (Severe damage can result from incorrect wiring.)

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Fig. 17

2.4 Description of the Hygrotec MMY 170 Programming Matrix In the Hygrotec dewpoint analyser, a matrix-style input is used for programming the functions, outputs, alarms, and calibration data. For users of other Endress+Hauser equipment, this ‘‘E+H matrix’’ format is familiar. The following describes the features and usage of the various matrix locations as they apply to the MMY 170. The display of the Hygrotec MMY 170 shows at all times the current matrix location, using the vertical (V) and horizontal (H) coordinates to designate the row and column, respectively (refer to Figure 17). (Note: A matrix programming card, similar to the one shown in Figure 17, is mounted to the outside of each Hygrotec electronics module.) The matrix location is displayed in the following form: (See Appendix ‘‘A’’ for enlarged view.)

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Functions of Push Buttons Fig. 18

For example, the position for display and manipulation of the second alarm setpoint is location V 1, H O. (Refer to Figure 17.)

Movement through the matrix is accomplished by using the ‘V’ and ‘‘H’’ buttons to move to another row or column. For example, beginning at V H 0 0 and successively pressing ‘‘V’’ leads the user to V H 10, V H 2 0, V H 3 0, V H 4 O, V H 5 O, V H 6 0, V H 7 0, V H 80, V H 9Oand back to V H O O. At any location where a value may be changed by the user, the digit to be altered is selected with the ‘‘→→*‘‘ button, and the desired value is programmed using the ‘‘+’ and ‘‘-‘‘ buttons. 2.4.1 Special Functions of the Push Buttons (a) Positioning the Decimal Point

While holding the ‘‘→→’’ button down, press the ‘‘+’ button to select the position of the decimal.

(b) Confirming the Programmed Value

After the desired value is programmed on the display, the ‘‘E’’ button confirms (or enters) the input.

(c) Reset to ‘‘Normal’’ Display

Pressing the ‘‘V’’ and ‘‘H’’ buttons simultaneously returns the user to V H 00 (normal display).

(d) Display Only Note that seven (7) matrix locations are for display only and may not be changed by the user (refer to Figure 17). For convenience, input (or programming) fields have a flashing digit in the display, whereas ‘‘display only’’ fields do not. The ‘‘display only’’ fields are as follows: o V H 00 = normal display (in dewpoint 0C) o V H 01 = normal display (concentration in ppmv) o V H 08 = displays probe frequency o V H 40 = displays temperature o V H 48 = displays temperature frequency o V H 90 = during a system alarm, displays the error code for the fault encountered o V H 91 = during normal operation, the most recent error code is displayed for reference o V H 93 = displays the factory issued reference number designating the device type and software version (e) Default Values

A default value is assigned to each programmable matrix field. The values are present after a reset to factory programmed data has been executed (see V H 95).

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2.4.2 Locking/Unlocking/Factory Reset Functions Prior to programming the Hygrotec, the user should be aware of the ‘‘locking/unlocking and ‘‘factory reset’’ functions. They are described as follows: 1. Locking /Unlocking the Matrix for Programming

Location in Matrix Description and Function V H 8 9

By selecting any value <670 or >679, programming of the matrix is prevented. This system locking feature prevents either unauthorized or accidental modification of setpoints or process control parameters. Values in the fields can be reviewed but not changed. Entering a value from 670 to 679 unlocks the matrix for programming. Default: 670

2. Reset to Factory Programmed Data

Location in Matrix Description of Function V H 9 5

This field allows resetting of all matrix parameters to their factory (default) settings by entering a number from 670 to 679. This field should only be programmed during service. Default: 0

Caution! Resetting to default values clears the calibration table (programmed in V H 22, V H 23 and V H 24) and compensation table (programmed in V H 62, V H 63 and V H 64).

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2.4.3 Functions of the Matrix (refer to Figure 17) The following describes specifically each field of the matrix grouped by common function: DISPLAY AND OUTPUT MODE 1. Dewpoint Display


This is the normal display of the analyser when in operation. The dewpoint is shown in °C.

2. ppmv Display


The ppmv is shown. To operate the analyser in ppmv select2 in V H 80. This enables all settings (alarm, Output) to refer to ppmv.

3. Selecting the Analogue Output 1 Range

Location in Matrix Description and Function

V H 0 3

This field provides selection of the analogue output range 0 3 corresponding to the dewpoint. For 0-20 mA current output, select ‘‘0w; for 4-20 mA, select’’ 1’’

Default: 0

4. Damping


In this field, the response of the transmitter to changes can be adjusted in the order of 0 to 100 seconds. Default: 4

5. Selecting the Analogue Output Offset (0/4 mA)


The dewpoint value corresponding to the analogue output offset (0/4 mA) is entered here. Default: -80 ° C

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6. Selecting the Analogue Output 1 Span (20 mA)


The dewpoint value corresponding to the analogue output span (20 mA) is entered here. Default: +20 °C

7. Selecting the Status of the Current Output During System Alarm


This field determines the status of the current output during a system fault. That is, the current output will hold (freeze) either at -10% of range, at 110% of range, or at the last measured value when 0, 1 or 2,,

respectively are selected for this value. Default: 2

8. Displaying the Probe Frequency


This field continuously displays the moisture sensor frequency

ALARM SET POINTS 9. Selecting Alarm Setpoint 1


The first process value (dewpoint/temperature) alarm setpoint (°C) is displayed and programmed in this location. Default: -40°C

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10. Selecting the Status of Alarm Setpoint 1 (Min or Max; Fail-Safe Mode) Location in Matrix Description and Function

V H 1 1

The value in this field determines whether the first alarm relay is a minimum or maximum alarm. That is, when ‘‘0’’ is selected, the alarm relay will trip if the dewpoint temperature is less than the setpoint value (minimum). When’’ 1’’ is selected, the alarm condition exists if the dewpoint is greater than the setpoint value (maximum). Default: 1

11. Selecting the Hysteresis for Alarm Relay 1


To prevent chattering of the relay, this value is the amount above a minimum setpoint or below a maximum setpoint that the dewpoint/temperature must be before the first alarm relay changes status. Default: 2 °C

12. Selecting the Status of Alarm Relay 1 During System Alarm


This field indicates the state of the first process alarm during a system fault. Selecting ‘‘0’’ will cause the process alarm to be de-energized (alarm state) when the system alarm is de-energized. Selecting’’ 1’’ will put the process alarm relay in the state that corresponds to the analogue output (-10% of range, 110% of range, or holding the last measured value; see V H 0 7, programming step 7, page 21 or V H 4 7, programming step 26 on page 26). Default: 0

13. Relay 1 Assignment to Outputs


Assignment of Relay 1: If 1, relay connected to current output 1, moisture. If 2, relay connected to current output 2, temperature. Default: 1

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LINEARIZATION 14. Confirming or Clearing Probe Calibration Data


This field of the matrix controls the calibration data for the DY 75 probe. This matrix location either confirms the existing calibration data (‘‘0’’) or clears the calibration data table (‘‘ 1’’). Default: 1

Caution I Caution should be exercised since entering ‘‘1’’ (followed by pressing ‘‘E’’) will erase all calibration values currently stored. 15. Selecting the Calibration Point


This location indicates the number of the particular calibration points that is to be examined or changed (NOTE: 13 calibration points are typically utilized. However, if the user desires a wider calibration range, up to 15 calibration points are available. See example table on page 33.) Default: 1

16. Verifying or Changing the Dewpoint of Selected Calibration Point

Location in Matrix Description and Function

V H 2 3

The value in this field is the dewpoint (in °C) of the calibration point chosen in V H 2 2, programming step 15, above.

17. Verifying or Changing the Frequency of Selected Calibration Point


This value is the probe frequency corresponding to the dewpoint given in V H 2 3, programming step 16, above.

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18. Moving Through the Calibration Table (Verifying or Changing the Values)


By using the ‘‘+‘‘or ’’-’’ buttons (followed by pressing ‘‘E’’’, the user may step sequentially through the table of calibration values to verify or change each one. In this case, the user is moved automatically to V H 2 3 to program the desired dewpoint value. After programming all the calibration values, the user must move to matrix location V H 2 0 to activate the programmed calibration data table. NOTE: The table is entered from low to high (i.e. point #1 -100 °C, #2 = -90 °C etc.).

SPECIAL CALIBRATION 19. Adjusting the Pressure Constant


The process pressure constant has to be in bar, which is used to calculate ppmv in location V H 0 2. The moisture unit ppmv is the ratio of water vapor pressure to the total process pressure and is, therefore, independent of the process pressure. The reason is that compressing a gas (process pressure) all partial pressures increase by the same factor (Dalton’s Law). The gold/aluminum oxide sensor is selective to water vapor pressure monitoring a higher vapor pressure when the total pressure (process pressure) increases. The formula utilized by the analyser refers to the total pressure of 1 bar. An elevated pressure of the process has to be corrected by programming the actual process pressure to the matrix field V H 3 1 The system is to be designed maintaining a constant pressure, for instance, by using a pressure regulator in a bypass system. Default: 1 bar

20. Verifying or Changing the Dewpoint of Selected Calibration Point


When the value ‘‘‘6’’ has been selected at matrix location V H 8 0 programming step 40, page 29), selection of this field generates a 0 mA signal for calibration. Connecting a mA-meter to the output the correct current (0 mA) can be adjusted by increasing or decreasing the displayed digits.

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21. Adjusting the Current Output 1 (20 mA) During Calibration


Selection of this field assists during calibration 39 generating a 20 mA signal. Connecting a mA-meter to the output the correct current (20 mA) can be adjusted by increasing or decreasing the displayed digits. This function is activated when ‘‘6’’ in V H 8 0 (programming step 40, page 29) is selected.

DISPLAY TEMPERATURE 22. Display Temperature


Temperature is shown in °C

23. Selecting the Analogue Output 2 Range


This field provides selection of the analogue output range corresponding to the temperature. For 0-20 mA current output, select ‘‘0’’; for 4-20 mA, select’’ 1’’. Default: 0

24. Selecting the Analogue Output 2 Offset (0/4 mA)


The temperature value corresponding to the analogue output offset (0/4 mA) is entered here. Default: 0

25. Selecting the Analogue Output 2 Span (20 mA)


The temperature value corresponding to the analogue output span (20 mA) is entered here. Default: 100 0C

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26. Selecting the Status of the Current Output During System Alarm


This field determines the status of the current output during a system fault. That is, the current output will hold (freeze) either at -10% of range, at 110% of range, or at the last measured value when 0, 1, or 2 respectively are selected for this value. Default: 2

27. Displaying the Temperature Frequency


This field continuously displays the temperature frequency.

ALARM SETPOINTS 28. Selecting Alarm Setpoint 2


The second process (moisture/temperature) alarm setpoint (°C dewpoint) is displayed and programmed in this location. Default: 25 0C

29. Selecting the Status of Alarm Setpoint 2 (Mm or Max; Fail-Safe Mode)


The value in this field determines whether the second alarm relay is a minimum or maximum alarm. That is, when ‘‘0’’ is selected, the alarm relay will trip if the dewpoint/temperature is less than the setpoint value (minimum). When’’ 1’’ is selected, the alarm condition exists if the dewpoint is greater than the setpoint value (maximum). Default: 1

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30. Selecting the Hysteresis for Alarm Relay 2


To prevent chattering of the relay, this value is the amount above a minimum setpoint or below a maximum setpoint that the dewpoint/temperature must be before the first alarm relay changes status. Default: 2°C

31. Selecting the Status of Alarm Relay 2 During System Alarm


This field indicates the state of the second process alarm during a system fault. Selecting ‘‘0’’ will cause the process alarm to be de-energized (alarm state) when the system alarm is de-energized. Selecting ‘‘1’’ will put the process alarm relay in the state that corresponds to the analogue output (-10% of range, 110% of range, or holding at the last measured value; see V H 4 7, programming step 26, page 26 or V H 0 7, programming step 7, page 21). Default: 0

32. Relay 2 Assignment During System Alarm


Assignment of Relay 2: If 1, relay connected to current output 1, moisture. If 2, relay connected to current output 2, temperature. Default: 2

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TEMPERATURE COMPENSATION 33. Confirming Probe Calibration Data (refer also to table on page 33)


This field of the matrix controls the compensation data for the DY 75 probe. This matrix location confirms the existing calibration data (‘‘ 0’’). Default: 0

34. Selecting the Compensation Point


This location indicates the number of the particular compensation factors that are to be examined or changed. NOTE: 7 calibration rows are utilized. See example table on page 33.

35. Verifying or Changing of Selected Compensation Point


The value on this field is the first compensation point of the row chosen in V H 6 2 programming step 34 above

36. Verifying or Changing of Selected Calibration Point


The value on this field is the second compensation point of the row chosen in V H 6 2 programming step 34 above

37. Moving Through the Calibration Table (Verifying or Changing the

Values)


By using the 1 or buttons (followed by pressing ‘‘E’’), the user may step sequentially through the table of compensation rows to verify or change each one. In this case, the user is moved automatically to 1) V H 6 3 to program the desired compensation value. After programming all the compensation values, the user must move to matrix location V H 6 0 to activate the programmed compensation table.

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When the value’’7’’ has been selected at matrix location V H 8 0 (programming step 40, below), selection of this field generates a 0 mA signal for calibration. Connecting a mA-meter to the output, the correct current (0 mA) can be adjusted by increasing or decreasing the displayed digits.



Selection of this field assists during calibration generating a 20 mA signal. Connecting a mA-meter to the output, the correct current (20 mA) can be adjusted by increasing or decreasing the displayed digits. This function is activated when ‘‘7’’ in V H 8 0 (programming step 40, below) is selected.

MODE OF OPERATION 40. Changing from ‘‘Normal’’ Mode to Simulation/Calibration Mode


This field provides the capability for the user to select either dewpoint (1) or ppmv (2) as the normal operation of the analyser and perform various simulations (see V H 9 6, V H 9 8, and V H 9 9, programming steps 47, 48, and 49, respectively, page 31 and 32) and electronic calibrations (V H 3 8, programming step 20, page 24,and V H 3 9, programming step 21, page 25. If’’ 7’’ is selected, V H 7 8, programming step 38, page 29, and V H 7 9, programming step 39, page 29). NOTE: When’’6’’ or ’’7’’ is selected, the system alarm LED (:) flashes, indicating that the analyser is not in a normal operation mode. The value’s’’1’’ or’’2’’~‘‘ must be selected for normal moisture measurement and analyser operation.

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41. Locking/Unlocking the Matrix for Programming Location in Matrix Description and Function

V H 8 9

By selecting any value <670 or >679, programming of the matrix is prevented. This system locking feature prevents either prevents either unauthorized or accidental modification of setpoints or process control parameters. Values in the fields can be reviewed but not changed. Entering a value from 670 to 679 unlocks the matrix for programming. Default: 6 10

SERVICE AND SIMULATION 42. Displaying the Error Code During System Alarm


In the event of a system fault, this field displays the diagnostic error code for the fault encountered

43. Displaying the Most Recent Error Code


When a system fault condition is cleared, the value of 9 1 the error code is stored in this location. That is, during normal operation, the most recent error code is displayed for reference. This field may be cleared by pressing the ‘‘E’’ button.

44. Identification Field


This field indicates a factory issued reference number that designates the device type and software version

45. E+H Bus Address


Analyser Module --- address selected by the dip switches in the unit. The address can be any number from 1 to 64, depending on which location the module is placed in the rack system. Default: 0

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46. Reset to Factory Programmed Data Location in Matrix Description and Function

V H 9 5

This field allows resetting of all matrix parameters to their factory (default) settings by entering a number from 670 to 679. This field should only be programmed during service. Default: 0

Caution! Resetting to default values clears the calibration tables (programmed in V H 2 2~, programming step 15, page 23, V H 2 3, programming step 16, page 23, and V H 2 4, programming step 17, page 23) and the compensation tables (programmed in V H 6 2, programming step 34, page 28, V H 6 3, programming step 35, page 28, and V H 6 4 programming step 36, page 28).

47. Simulating Probe Frequency (for test purposes)


This field (when V H 8 0 is set to ‘‘6’’ programming step 40, page 29) allows user entry of a particular frequency value (i.e. simulating a probe). The user may then observe both the dewpoint calculated (and displayed in V H 9 8, programming step 48, below) and the analogue output signal generated by the analyser (and displayed in V H 9 9, programming step 49, page 32). NOTE: The frequency simulation is only valid for moisture.

48. Simulating Probe Dewpoint (for test purposes)


As with V H 9 6 (programming step 47, above), this field allows user entry of a dewpoint value (simulated analyser software result) for testing the analogue output, alarms or other analyser functions. NOTE: Selecting ‘‘7’’ in V H 8 0 allows simulation of temperature value.

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49. Simulating Current Output (for test purposes)


This field allows simulation of a particular current output by programming a value (in mA) that is then transmitted to the analogue output terminals and verified by the corresponding frequency and dewpoint values in V H 9 6 and V H 9 8, respectively (programming steps 47 and 48 page 31 NOTE: Selecting ‘‘7’’ in V H 8 0 allows simulation of output 2

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Standardised Calibration Table

3.0 Troubleshooting 3.1 Calibration Table Typical table. Correct entries may have to be checked while troubleshooting.

Calibration Point Number Frequency/Hz Dewpoint/°C 1 2 3 4 5 6 7 8 9 10 11 12 13

188.9 187.3 186.2 184.3 180.1 169.1 160.7 152.6 134.1 110.7 98.0 87.3 76.1

-100.0 -90.0 -80.0 -70.0 -60.0 -50.0 -40.0 -30.0 -20.0 -10.0 0.0

+10.0 +20.0

Calibration Point Number Factor A Factor B 1 2 3 4 5 6 7

0.4 1.161 1.083 1.139 1.167 1.111 0.652

16.3 0.835 0.808 0.858 0.801 0.783 0.749

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3.2 Error Codes The Hygrotec MMY 170 microprocessor performs its own diagnostic checks. Should a

problem occur, the system alarm LED (:) illuminates and stays on (solid). Follow programming step 28, page 26, V H 5 0 and read the error code. The first two error codes are relative to the Hygrotec's calibration table. To aid the user in visualizing the structure of a typical calibration/compensation table, one is provided above. 3.2.1 Error Code E 201

This error code indicates that the measured frequency is out of calibration table range at the high dewpoint or <20 Hz.

(a) Following programming step 8, page 21, V H 0 8, read the probe frequency (b) If the probe frequency displayed is <20 Hz but >zero, the probe should be

returned to the factory. (C) If the frequency displayed is >20 Hz, perform programming step 15, page 23,

V H 2 2, and select the lowest frequency calibration point (factory program = point #12). Follow programming step 17, page 23, V H 2 4, and read the table value. If the table value is higher than the actual frequency V H 0 8, the probe is out of calibration table range and should be returned to the factory for recalibration.

(d) If the frequency displayed is in the range of 15 to 17 Hz, the sensor is shorted. Replace the probe.

3.2.2 Error Code E 202

This error code indicates that the measured frequency is out of calibration table range at the lowest dewpoint or >3000 Hz.

(a) Following programming step 8, page 21, V H 0 8, read the probe frequency. (b) If the probe frequency displayed is >3000 Hz, the probe should be returned

to the factory (c) If the probe frequency displayed is <3000 Hz, perform programming step 15,

page 23, V H 2 2, and select the highest frequency calibration point (factory program = point #1). Follow programming step 17, page 23, V H 2 4, read the table value. If the table reading is lower than the actual frequency V H 0 8. the probe is out of calibration table range and should be returned to the factory for recalibration.

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3.2.3 Error Code E 401 This error code indicates that input z2 is not receiving a signal.

(a) Following programming step 8, page 21 V H 0 8, read the probe’s moisture frequency. If the frequency is 0.5 Hz, the analyser is not receiving a frequency signal from the probe.

(b) Check all connections for security and correct placement, and all cables for breaks or severe bends. Read the probe frequency again. If the frequency is still 0.5 Hz, the probe is probably at fault and should be returned to the factory for repair.

(c) If you have another probe that is in good working order, disconnect power from the analyser, disconnect the suspect probe, and connect the working probe to the analyser. Power up the analyser. If the error code E 4 0 1 appears in the display and the frequency is 0.5 Hz when reading V H 0 8, the analyser might also require repair. Therefore, the suspect probe and the analyser should be returned to the factory. However, upon power up with the working probe, if no error code appears and the probe and analyser function satisfactorily, only the suspect probe should be returned to the factory for repair.

3.2.4 Error Code E 402

This error code indicates that input d2 is not receiving a signal to the analyser.

(a) Following programming step 27, page 26, V H 4 8, the display should read three different frequency values in sequence. If the display does not show three different frequencies in sequence, the analyser is not receiving a frequency signal from the probe. The last value read remains on the display.

(b) Check all connections for security and correct placement, and all cables for breaks or severe bends. Read the probe frequency again, If the frequency is still 0.5 Hz, the probe is probably at fault and should be returned to the factory for repair.

(c) If you have another probe that is in good working order, disconnect power from the analyser, disconnect the suspect probe, and connect the working probe to the analyser. Power up the analyser. If error code E 4 0 2 appears in the display or the frequency does not change when reading V H 4 8, the analyser might also require repair. Therefore, the suspect probe and the analyser should be returned to the factory. However, upon power up with the working probe, if no error code appears and the probe and analyser function satisfactorily, only the suspect probe should be returned to the factory for repair.

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3.2.5 Error Code E 400 This error code indicates that input 1 and input 2 are not receiving a signal to the analyser. (See error codes on page 35.)

3.2.6 Error Codes E 602 to E 607 These error codes indicate faulty calibration data entry Re-enter calibration data. 3.2.7 Error Codes E 608 and E 610 These error codes indicate wrong current output setting. 3.2.8 Error Codes E 613 and E6l4 These error codes indicate simulation mode. 3.2.9 Error Codes E 106, E 107, E 301. E 302, E 600, and E 601 Contact factory.

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3.3 Probe Replacement/Recalibration All of the Endress+Hauser planar gold/aluminum oxide sensor probes are calibrated at the factory. Standard gases at known moisture levels are applied to every probe. Each probe is tracked by serial number, and its individual response at each moisture level is documented. NOTE: A routine factory recalibration and inspection of Endress+Hauser moisture sensors is recommended every six (6) to twelve (12) months. Factory calibration (including initial Calibration) is warranted for six (6) months. The reliability of the measurement given by a sensor that has not been calibrated in over a year may be questionable. Should a probe require recalibration or repair, return it to Endress+Hauser according to the instructions in Section 3.3.2 below. The probe will be recalibrated with standard gases and returned to you with its new calibration data sheet. 3.3.1 Probe Removal/Replacement To extract the probe from the process, ensure that all of the pressure at the probe has been released. Disconnect the power to the analyser and remove the cable connector from the probe. Remove the probe from the process. Reverse this procedure to replace the probe (refer to Section 2.1, pages 11 and 12). 3.32 Repackaging for Shipment The return of all instruments to the factory must be pre-approved and assigned a Return Authorization Number. This Return Authorization Number must be clearly identified on all shipping cartons and paperwork. A Return Authorization Number can be obtained by contacting the Endress+Hauser Sales Center nearest you, or by calling 1-800-334-8643 (within the US only) or (317) 535-7138. Pack the equipment as follows: (a) If the original container is to be used

o Wrap the instrument in the original packing material and place it in the original inner container. o Place the original packing material around all sides of the instrument and protect the panel face with cardboard strips. o Place the instrument, in its inner container, in the original carton and seal with strong tape or metal bands. o Include the Return Authorization Number on the shipping label and on the carton.

(b) If the original container is not used o Wrap the instrument in heavy paper or plastic and place it in an inner container. o Place the packing material around all sides of the instrument and protect the panel face with cardboard strips. o Place the instrument, in its inner container, in a heavy carton or wooden box and seal with strong tape or metal bands o Mark the shipping container with ‘‘DELICATE INSTRUMENT’’ or ‘‘FRAGILE’’ and include the Return Authorization Number on the shipping label and on the carton.

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3.3.3 Reprogramming of the Analyser Upon Return of a Probe from the Factory Upon receipt of your recalibrated probe, you must enter the new calibration table data into the analyser prior to resuming operation of the Hygrotec MMY 170. A calibration data sheet is provided with every probe that has been recalibrated by the factory. (See Table on page 33.) (a) Insure no power exists to the analyser. Connect the probe to the analyser (Section 2.3, page

15). Apply power to the analyser. (b) Perform programming step 14, page 23, V H 2 0, and enter 1 (one) to erase the existing

calibration data. (c) Perform programming step 15, page 23, (V H 2 2) and enter 1 to modify the lowest dewpoint

calibration table value. (d) Perform programming step 16, page 23, V H 2 3 and enter the lowest dewpoint value (listed

on the calibration table data sheet). (e) Perform programming step 17, page 23, V H 2 4 and enter the corresponding frequency

value (listed on the calibration table data sheet). (f) Perform programming step 18, page 24, V H 2 5 to access the next calibration point (using

the ‘‘+‘‘ button followed by pressing ‘‘F’’). Modify the dewpoint and frequency values for the next calibration point (point #2) using V H 2 3 and V H 2 4 as described above.

(g) Continue through all the calibration table entries utilizing the values on the calibration data

sheet provided with the recalibrated probe and matrix locations V H 2 3, V H 2 4, and V H 2 5. When you have entered all the values, perform programming step 14, page 23, V H 2 0, pressing 0’ (zero) to activate the programmed calibration table values.

For the temperature compensation, perform the following: (a) Perform programming step 34, page 28, V H 6 2 and enter 1 to modify compensation factors

A and B of the first row. (b) Perform programming step 35, page 28, V H 6 3 and enter compensation factor A (listed on

the compensation table data sheet). (c) Perform programming step 36, page 28, V H 6 4 and enter compensation factor B (listed on

the compensation table data sheet). (d) Perform programming step 37, page 28, V H 6 5 to access the next compensation point

(using the ‘‘+‘‘ button followed by pressing ‘‘F’’). Modify the compensation factor ‘‘A’’ and the compensation factor ‘‘B’’ values for the next compensation row (point #2) using V H 6 3 and V H 6 4 as described above.

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(e) Continue through all the compensation table entries utilizing the values on the compensation data sheet provided with the recalibrated probe and matrix locations V H 6 3, V H 6 4, and V H 6 5. When you have entered all the values, perform programming step 33, page 28, V H 6 0, pressing ‘0~ (zero) to activate the programmed compensation table values.

The Hygrotec MMY 170 is now ready to resume operation.

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Fig. 19

4.0 Option: Moisture Unit ppmw 4.1 Moisture Measurement in Liquids Molecules such as the hydrocarbon chains in oils and fats that do not have polar regions do not mix with water. The hydrogen bond between the water molecules acts as a force to exclude the nonpolar molecules. Similar to gases, liquid hydrocarbons can absorb a certain quantity of water vapor and have a saturation value Cs which is temperature dependent. If the Cs value is exceeded, water falls out as droplets and forms an emulsion with hydrocarbon. This similarity to gas allows moisture measurement with the gold/aluminum oxide sensor which will monitor the water vapor pressure and a dewpoint can be determined. However, with moisture measurement, ppmw (by weight) is the common engineering unit and is calculated from the water vapor pressure. The total pressure of the liquid need not be considered since liquids are not effectively compressible. Since each hydrocarbon has a different saturation value and temperature dependence, a table of these parameters for the liquid to measure has to be entered into the instrument electronics (six Cs values at temperatures between 0 and +50 0C in steps by 10 0C). Cs values of 10 hydrocarbons (shown on page 42) stored in the MMY 170’s memory can be selected following programming step V H 3 1 and selecting Cs table no. 5 to 14. By selecting 0….4, the user can program Cs values of five hydrocarbons. (See Section 4.1.2, page 41.) The matrix shown below is different than the one shown on page 17, Figure 17. Nine fields have been added that pertain to the moisture unit ppmw and are highlighted with gray lines to show the user where they are located. (See Appendix ‘‘B’ for an enlarged view.)

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4.1.1 Display and Output Mode


This is the normal display of the analyser when in operation if moisture unit PPMw is selected

4.12 Selection of Cs Tables


In addition to the Cs values of 10 hydrocarbons stored in the memory of the MMY 170, the user can program Cs values of 5 hydrocarbon liquids on their own by selecting Cs table no. 0 to 4. NOTE: The Cs values are not visible in fields V H 3 2 to V H 3 7. These fields show the last manually entered Cs values.

4.1.3 Changing from ‘‘Normal’’ Mode to Simulation/Calibration Mode


This field provides the capability for the user to select either dewpoint (1), ppmv (2), or ppmw (3) as the normal operation of the analyser and perform various simulations (see V H 9 6, V H 9 8, and V H 9 9, programming steps 47, 48, and 49, respectively, page 31 and 32) and electronic calibrations (V H 3 8, programming step 20, page 24, and V H 3 9 programming step 21, page 25). If ‘‘7’’is selected, V H 7 8, programming step 38, page 29, and V H 7 9, programming step 39, page 29). NOTE: When ‘‘6’’ or’’ 7’’ is selected, the system alarm LED (:) flashes, indicating the analyser is not in normal operation mode. The value’’ 3’’ must be selected for moisture measurement in ppmw.

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4.2 Preprogrammed (10) Saturation Concentration (Cs) Values

V H Hydrocarbon Liquid Cs value in PPMw 3 1 (at each given temperature

Position 0°C 10 °C 20 °C 30 °C 40 °C 50 °C

5 Benzol 454 639 870 1178 1570

6 Butane 67 121 156

7 Hexane 101 179 317

8 Transformer Oil 19 28 45 70 100 160

9 Propane 53 140 200 258

10 Pentane 94 192 350

11 Propylene 416 779

12 Gasoline 40

13 Butadiene 500 730

14 Kerosene 100

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4.3 Saturation Concentration (Cs) Tables 0°C 10°C 20°C 30°C 40°C 50°C 60°C Benzene 310 450 675 960 1350 1825 Bicycto(2.2.1)hepta-2,5-diene 295 383 670 1,3-Butadiene 330 500 640 510 1005 1200 Butane 61 110 190 305 n-Butylacetate 13700 n-Butylbenzene 234 331 448 sec-Butylbenzene 226 317 426 tert-Butylbenzene 205 282 389 n-Butylcyclopentane 56 95 151 Carbon dioxide C02 570 760 1000 Carbon disulfide CS2 9000 Chlorobenzene 40 Chloroform (Trichloromethane) 600 Cumene 156 219 303 407 550 710 Cycloheptatriene 630 773 990 Cyolohexane 36 67 122 194 317 490 Cyclohexene 252 317 424 562 Cyclopentane 46 86 142 249 398 1 ,4-Bis(cyclopentyl)butane 88 139 241 2-Cyclopentyloctane 48 75 122 Decalin 63 105 164 Diethylether 2000 Dichloropropane 2700 Diethylbenzene 159 226 319 431 574 756 Di-isobutylene 145 191 274 2,3-Dimethylbutane 29 58 110 192 323 516 2,3-Dimethyl-1 -butene 459 2,6-Dimethylheptane 53 91 160 301 465 2,4-Dimethylhexane 53 98 180 2,7-Dimethyloctane 48 87 152 2,3-Dimethyltetradecane 77 134 219 344 Ethylbenzene 159 226 319 431 574 756 Ethylcyclopentane 71 119 186 Ethylenechloride (1,2-diehloroethane) 1500 1-Ethyl-2-pentylcyclopentane 103 168 273

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Saturation Concentration (Cs) Table (continued) Hydrocarbon Liquid Cs (ppmw) (at each given temperature) 00C 100C 200C 300C 400C 500C 600C Heptane 27 54 96 172 308 480 1-Heptene 186 249 375 Hexadecane 69 123 209 332 Hexane 101 179 317 1-Hexene 477 n-Hexylcyclopentane 52 84 141 lsobutylacetate 8000 lsoprene 520 674 850 1075 1295 Isopropylcyclopentane 59 102 159 p-Isopropyltoluene 223 305 415 Kerosene 100 2-Methylbutane 32 55 95 150 260 400 2-Methyl-2-butene 435 Methylcyclohexane 61 116 179 Methylcyclopentane 73 131 205

1 -Methyl-2- phenylcyclopentane 105 173 289 Methylenechloride (Dichloromettiane) 1700 2-Methylhexane 56 103 182 2-Methyloctane 52 90 156 3-Methyloctane 50 87 155 Nitrobenzene 3000 Octane 51 160 184 315 507 n-.Pentane 94 192 350 1 -Phenyl-5-methyl- 1 -cyclopentene 306 2-Phenyl-2 ,4 6- trEmethylheptane 96 154 252 Propane 53 140 200 258 Propylene 416 779 Propylidenecyclopentane 383 Styrene 345 Tetrachloroethylene 20 Tetrachloromethane (carbon tetrachloride) 80 Tetralin 7200 Toluene 316 460 615 750 965 Transformer Oil 19 28 45 70 100 160 Trichloroethane 90

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Saturation Concentration (Cs) Table (continued) Hydrocarbon Liquid Cs (ppmw) (at each given temperature) 0°C 10°C 200C 300C 400C 500C 60°C Trichloroethylene 20 1 ,3,5-Trimethyl-2-allylbenzene 246 331 438 1 ,3,5-Trimethylbenzene 291 393 519 2,2,3-Trimethylbutane 27 57 160 184 315 507 1 ,3,5-Trimethyl-2-ethylbenzene 259 350 461 1 ,3,5-Trimethyl-2-propyl benzene 255 343 455 2,2,4-Trimethyipentane 31 59 115 201 332 538 m-Xylene 289 402 536

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4.4 Vapor Pressure Conversion Table Temperature p(H2O) Temperature p(H2O) °C mbar °C mbar -100 .000014 -59 .012357 -99 .000017 -58 .014120 -98 .000021 -57 .016116 -97 .000026 -56 .018311 -96 .000031 -55 .020917 -95 .000038 -54 .023787 -94 .000046 -53 .027020 -93 .000055 -52 .030657 -92 .000061 -51 .034745 -91 .000080 -50 .039334 -90 .000097 -49 .044480 -89 .000116 -48 .050244 -88 .000139 -41 .056695 -87 .000166 -46 .063905 -86 .000198 -45 .071958 -85 .000235 -44 .080942 -84 .000279 -43 .090955 -83 .000331 -42 .102104 -82 .000392 -41 .114505 -81 .000464 -40 .128281 -80 .000547 -39 .143588 -79 .000644 -38 .160561 -78 .000757 -37 .179371 -77 .000889 -36 .200197 -76 .001042 -35 .223236 -75 .001219 -34 .248700 -74 .001424 -33 .276819 -73 .001661 -32 .307843 -72 .001935 -31 .342045 -71 .002251 -30 .379711 -70 .002614 -29 .421118 -69 .003031 -28 .466771 -68 .003509 -27 .516866 -67 .004058 -26 .571865 -66 .004686 -25 .63220 1 -65 .005403 -24 .698338 -64 .006222 -23 .770780 -63 .007156 -22 .850066 -62 .008219 -21 .936778 -61 .009428 -20 1.03154 -60 .010800 -19 1.13503

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Vapor Pressure Conversion Table (cont.) Temperature p(H2O) Temperature p(H2O) °C mbar °C mbar -18 1.24795 23 28.084 -17 1.37106 24 29.829 -16 1.50528 25 31.669 -15 1.65140 26 33.606 -14 1.81040 27 35.646 -13 1.98330 28 37.793 -12 2.17118 29 40.052 -11 2.37522 30 42.428 -10 2.59664 31 44.925 -9 2.83678 32 47.548 -8 3.09704 33 50.304 -7 3.37893 34 53.197 -6 3.68406 35 56.233 -5 4.01413 36 59.419 -4 4.37096 37 62.759 -3 4.75649 38 66.261 -2 5.17276 39 69.930 -1 5.62197 40 73.774 0 6.10642 41 77.794 1 6.56533 42 82.011 2 7.05388 43 86.419 3 7.57434 44 91.030 4 8.12849 45 95.851 5 8.71820 46 100.890 6 9.34540 47 106.155 7 10.012 48 111.655 8 10.720 49 117.397 9 11.413 50 123.391 10 12.271 51 129.646 11 13.118 52 136.170 12 14.016 53 142.973 13 14.967 54 150.067 14 15.975 55 157.457 15 17.042 56 165.156 16 18.171 57 173.176 17 19.366 58 181.525 18 20.628 59 190.214 19 21.962 60 199.256 20 23.371 21 24.858 22 26.428

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5.0 Intrinsic Safety For applications in hazardous areas, the DY 75-A or DY 75-N must be used. These versions are PTB certified under number Ex-95.D.2141. DY 75 Moisture Probe Certificate: R Standard (not certified) A Certified PTB, (EEx ia) IIC T6, Zone 0 N Natural gas probe, certified (EEx ia) IC T6, Zone 1 Process Connection: G Thread G 1/2 (DIN ISO 228) Housing: H Harting plug-in connection W PG-16 WADI connection Sensor Protection: 2 Protection tube with 10 um fine filter

5.1 (Ex) Protection The probe DY 75 has been developed and manufactured according to the following regulations: EN 50014:1977 + Al ...A5 (VDE 0170/0171 part 1/1.87) General provisions EN 50020:1977 + Al.. .A5 (VDE 0170/0171 part 7/1.87) Intrinsic safety I It is designed according to the intrinsically safe EEx ia IC T6 type of protection. Every moisture probe intended for use in Zone 0 is tested for tightness under 1 .5 times the maximum possible operating pressure 5.2 Area of Application By design, the moisture probe is suitable for use in locations subject to explosion hazards due to the presence of flammable substances of all explosion groups. Hazardous area: Probe: Zone 0 (type A), Zone 1 (type N) Temperature class: Tl to T6 Ambient temperature: max. 65 °C

5.3 Intrinsically Safe Circuit The moisture probe is operated in conjunction with the corresponding transmitter, type EY 73 Z, the measuring and supply circuits of which are Iayed out in the intrinsically safe hazardous area protection type EEx ia IIC, Zone 0. The electric strength of the intrinsically safe circuit against the housing is 500 V AC (effective value).

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5.4 Arrangement of Lightning Protection Device: Lightning protection device (overvoltage protection) Type: HAW 262 Z The purpose of a lightning protection device is to be employed for outdoor containers installed above or under ground to provide protection against harmful effects of atmospheric discharges (lightning). The lightning protection device prevents ignition of the explosive atmosphere by means of dangerous overvoltages, e.g. caused by lightning, via the intrinsically safe circuit located in a Zone 0 hazardous area. The design of the lightning protection device HAW 262 Z has been tested according to PTB no. Ex-8212071-X (capacitive measuring probes). If the intrinsically safe circuit is established in conjunction with measuring transmitters on containers located above ground, the lightning protection device HAW 262 Z in conjunction with a protective housing is to be chosen. The installation is to be performed according to drawing no. PTB-DY75A 6/6. The line to be protected must be connected to terminal 2 of the lightning protection device, and the unprotected line to terminal 1.

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6.0 Bus Communication Reference Documentation To further understand the bus communication option, the following list of literature contains information that might be helpful to the user:

o racksyst Transmitters in Racksyst design 19~ plug-in cards and cassettes For use with sensors from Endress+Hauser (SI 008100e) o rackbus Field communication for existing and future process control systems (SI 014F100/e)

o Handheld Terminal commulog VU 260 Z Remote configuration of Commutec and Smart transmitters Designed for use in explosion hazardous areas (TI 1401001e)

o Field Communication modbus gateway Z4~ 672 With command and data ports for digital control of intrinsically safe field instrumentation (TI 1481001e)

o Field Communication ZA 673 PROF/BUS gateway Integrates intrinsically sate Rackbus instrumentation into PROFIBUS networks

o Field Communication commutec Operating Program Software package for PC-supported configuration of commutee measuring instruments (TI 1131001e)

o Field Communication commugraph presentation software Software for measured value presentation on personal computer and printer (TI 158/OO/e)

o Field Communication commutool Commissioning and servicing software for Commutec transmitters (TI 163F100/e)

o Field Communication commutec Interfaces Siemens Simatic 85. software package (TI 115/02.92/e)

o Field Communication ZA 371 interface adapter Interfaces 5V TTL ~ 20 mA current-loop and RS-232C c~ 20 mA current loop (TI 1531001e)

o Field Communication ZA 371 interface adapter Interfaces 5V TIE .~ RS-232C, 5V TTL ~ RS-422 or RS-232C ~ RS-422 (TI 152100/e)

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o Digital Communication Open to present and future fieldbus standards Gateways for Modbus, PROFIBUS and FIP Digital transmitter for PROFIBUS IS Profile (SD O44FIOOle) o Field Communication Integration of intrinsically safe field instrumentation into Industrial Communications Networks (SD 027/OO/e) o Field Communication Digital process control with analogue and digital instrumentation (SD O43FIOOIe) o Racksyst Accessory Power Supply Unit NT 470 Power supply unit in Racksyst plug-in board design (TI 004/OO/e) o Field Communication Commuwin II

SI 018F/OO/e

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APPENDIX

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Hygrotec MMY 170

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IMA Limited Parkwell House

Otley Road Guiseley

West Yorkshire LS20 8BH England

Tel: +44 (0)1943 878877 Fax:+44 (0)1943 879988

e-mail: [email protected] Website: www.ima.co.uk

8388-mmy170

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