2013edition Catalog

8/12/2019 2013edition Catalog

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NOHKEN INC. is committed to providing CustomerSatisfaction through the Creative Endeavors ofthe people concerned with Full Respect to theirHumanity.

These three objectives have been at the heartof our management philosophy since NOHKENINC. was established. The broad technologicalbackground and capabilities of our employees arefully directed towards the introduction of new ideas

and improved products that will better meet ourcustomer's needs.

To achieve our goals, we do not rely just onourselves. We collaborate with others to furtherenhance our activities through process that we call"Alliance Management" which means the exchangeand incorporation of ideas and technologies from allsources. This powerful combination of ideas helpsus in striving for an unsurpassed level of excellence.

Company History

1965 Established by Mr. Hiroshi Nagashima, the president of NOHKEN INC.Developed Reciprocating Paddle Level Sensor

1975 Constructed a Head Office in Suita-city, OSAKA1978 Introduced Capacitance Level Sensor1981 Developed Hydrostatic Level Measurement System1984 Developed one probe Vibration Level Sensor1985 Constructed a factory building in Sanda-city, HYOGO

Formed a capital tie-up with Shanoc Inc., our exporter and importer1986 Entered into an alliance with Milltronics Ltd. in Canada1987 Formed a capital and technical tie-up with Seojin Instech Co., Ltd. in Korea1989 Developed Magnetostrictive Level Measurement System1990 Entered into an alliance with Druck Ltd. in U.K.1991 Entered into an alliance with Solartron Mobrey Ltd. in U.K.

Developed Optical Level Sensor 1995 Established Taiwan NOHKEN Co., Ltd. in Taiwan Entered into an alliance with Smar Equipamentos Ind. Ltda. in Brazil Introduced Microwave Level Sensor 1996 Entered into an alliance with Multitrode Inc. in Australia

1998 Certified ISO9001 and JIS Z 9901 standards for quality system Entered into an alliance with Nivus Kontrollgerate GmbH. in Canada 1999 Entered into an alliance with Enraf B.V. in Netherlands 2000 Developed New Capacitance Level Sensor 2001 Entered into an alliance with Siemens AG and Siemens KK in Japan 2002 Constructed a Second Head office Developed New Vibration Level Sensor 2006 Merger of Shanoc Inc.

Message from Management


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IntroductionLevel sensors, either of the continuous measurement model which measures the whole range where the level changes, or of the

point level measurement model which detects the material when it reaches the specified points such as high and low, directly use

one of the physical characteristics the measured material has.

For example, float sensors and pressure transmitters utilize the density of measured fluid, capacitance sensors the dielectric

constant, Additionally, solids exhibit some characteristics that liquids do not, including shape, apparent density, angle of repose,

and water content. They are known to change, sometimes enormously, when operating conditions or application environments

change, adversely affecting the operation.

In the following paragraphs, sensors are divided into two groups, liquid level sensors and solid level sensors, and general

instructions for selection and use of level sensors are given based on the characteristics of each group.

LIQUID LEVEL SENSORS

The levels a liquid level sensor measures include: the interface between air and liquid, the one most commonly known as a

level; the interface between liquids, such as water and oil; and the interface between liquid and solid, such as the tank bottom

and the liquid inside it.

Liquids to be measured vary widely. They can be made of a single component or a mixture of multiple components, with

different density, viscosity, or dielectric constant. The state of liquid, such as if it is highly viscous, adhesive, with foam on its

surface, slurry, or easy to crystalize, is also very important in selecting a level sensor.

The state or condition of liquid in the tank, such as its behavior, pressure and temperature, can affect measurement accuracyand thus is an important factor. Relation between the speed of level change due to fi lling or discharge and the sensor response

rate, foam because of an agitator, vortex, bubbling, and vibration also require special considerations.

If accuracy is important, the mounting location and method will have to be chosen carefully. In this case, sensors should not

be mounted near the inlet or the outlet, or a guide pipe or a stillpipe may have to be provided to prevent the sensor from being

carried away by the fluid.

Sensors using specific gravity

Liquid characteristics are very important in selecting a level sensor.

Float sensors and pressure sensors utilize specific gravity of the measured liquid. Although change in specific gravity causes

measurement error, the conditions are usually controlled in process measurement or control applications. The specific gravity is

not likely to change in these applications, and level sensors adjusted to the specified specific gravity will work fine. However, it

has to be noted that measurement error can occur when operating conditions are different from the usual states, such as during

startup of the plant.

Sensors using dielectric constant

Capacitive sensors use dielectric constant. Dielectric constant of liquid is generally sensitive to temperature change, and the

value decreases as the temperature rises. For example, dielectric constant of water is 88 at 0C, 80 at 20C, and 48 at 100C.

Thus, temperature conditions must carefully be considered when using a capacitive sensor.

Moreover, temperature change is not the only challenge. Many users use the capacitive sensors assuming the temperature

change will be small after process conditions are decided and there will be no other problem. Even when the temperature change

is small, care must be taken when the measured liquid has small dielectric constant or is adhesive, or when high accuracy

measurement is required.

SOLID LEVEL SENSORS

Solids exhibit totally different characteristics from liquids, with some possibly yet to be satisfactorily explained. It can be saidthat solid level sensors have been developed empirically to this day.

Some of the characteristics are explained in the following paragraphs.

Angle of repose

When solid materials are poured onto a horizontal surface, a conical pile will form. The internal angle between the surface of the

pile and the horizontal surface is known as the angle of repose. The slope angle, by the way, at which solid materials start to slide

is called the angle of slide. The angle of slide is smaller than the angle of repose.

The angle of repose varies with the water content, size and shape of the particles, and tends to increase when water content

increases and when the particle diameter decreases.

Solid pressure

While liquid pressure is exerted equally in all directions, solid pressure acts the most strongly in the direction the pressure is

applied, and less strongly in other directions, with the weakest point at a 90 degree angle off the original direction.When the applied pressure exceeds a certain limit, the particles start to slide.

Pressure exerted on the tank bottom becomes the largest when the solid level is 3 to 5 times the tank inner diameter, however,

at lower levels, most of the weight acts sideways on the tank wall and the downward force does not increase.

General Notes for Handling Level Sensors


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Bridging

Bridging is one of the characteristics of solid materials that can pose problems.

Solid materials are usually discharged by gravity. Even those with high fluidity can deposit at the tank bottom in a funnel shape

and stop discharging if the outlet is small. Adhesive solids tend to discharge only at the portion directly above the outlet, and the

rest of material remains in the tank. These phenomena are called bridging. It is said that solids of its particle diameter larger than

1 mm do not cause bridging if the outlet diameter is at least 6 times as large as that of the particle.

General notes for selecting a level sensorLevel sensors are used in a wide range of applications. The measured material can be liquids, solids or bulk solids, and the

purpose of measurement can be detection of fil led or discharged amount for business transactions, process monitoring or

control, or production or inventory management. Selecting a sensor most suitable for the measured material and the purpose of

measurement is necessary for successful level measurement.

Signal processing capability is one of the features that the user should care about to receive necessary information from the

sensor. Sensors can:

- have the local display only;

- come with a transmitter;

- are capable of calculating and processing the output signals, and converting them to signals for recording, warning or control.

Choosing the sensor best matching the purpose of measurement is important.

Prior to selecting a sensor, the user needs to consider what the material is, why it is to be measured, what is the required

information, and how the gained information is to be processed and used.

The following paragraphs include typical notes for selecting a level sensor.

(1) Material to be measured

The important factors regarding the measured material include the material type, its characteristics under the operating

conditions such as temperature, pressure, density, viscosity and dielectric constant. For solid materials, apparent density,

humidity, particle size and the angle of repose should also be taken into consideration. Additionally, corrosiveness, abradability,

inflamablilty and explosiveness and their levels should be clarified.

The state of material in the tank is another factor for successful sensor selection. Information such as whether the level is

stationary or changes slowly, the surface is with turbulence or vortex due to an agitator or by boiling, has to be checked. The type,

configurations and material of construction of the tank are also important.

If maintenance, service or replacement of the sensor with the tank in operation is required, such availability has to be checked.

If such work is required but the process does not allow it, sensors that can be isolated from the process will be the choice.

(2) Information to be obtained

The sensor model, needed functions and required accuracy level depend on the information required to be obtained using

the sensor. There are two types of level sensors, point level sensors and continuous level sensors. Use the former for warning

or switching control at a specified level, and the latter for measurement of filled, discharged or current amount of material, or for

process control.

The following items should be taken into account in selecting a sensor to use:

- application type such as liquid/solid level, interface of liquids or liquid and solid;

- whether the data are regarded as continuously monitored information gained using one controller and one sensor, or as

cyclically or intermittently monitored information gained using one controller and multiple sensors;

- required measurement accuracy.

(3) Usage of obtained information

The measured values can be used simply as a level value, or converted into volume, mass or other information. If conversion isrequired, check how it should be done.

Also, check how the measured values should be displayed, that is, if it should be recorded, or graphically displayed, and also if

it is to be used for continuous or switching control, and if digital or analog transmission is required.

(4) Relation between the measured material and the sensor

Mounting location and method are important factors in terms of accuracy, error occurrence, failure ratio and maintenance.

Conditions of the mounting location such as temperature, if the unit is exposed to direct sunlight, vibration or corrosive materials,

and the zone number of the location should also be checked.

For food and beverage applications, sensors have to be of sanitary models, easily cleaned and without anything that can cause

material buildup. Give a thought to the location and conditions of inlet and outlet, and peripheral equipment or conveyer as well.

(5) Use in hazardous areas

Flameproof or intrinsically safe sensors are typically used in hazardous areas. Which to use depends on the zone classificationof the area. In Zone 0 areas, intrinsically safe sensors must be used. In Zone 1 and 2 areas, intrinsically safe or flameproof sensors

are required. Check which type of approval is required in your application before selecting a sensor.


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NOHKEN INC. including Sanda factory have been certified to ISO9001 and JIS Z 9901

standards for quality system in 1998.

Scope: Design, development, production and servicing of level sensor and related devices to measure andcontrol, except imported products.

Certification: Japan Standard Association (JSA)

Registration Number: JSAQ237 Registration Date: January 23, 1998

We have been providing high quality products and attentive services to customers under the managementconcept of Customer Satisfaction. Our Sanda factory, with the cleanest and systematic atmosphere,provides following facilities to carry out quality control:

Explosion-proof testing equipment Automatic plasma-welding robot Float pressure and leak tester Temperature and Humidity Chamber Vibration Tester Various electronic calibration instruments


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Message from Management ......................................................1

General Notes for Handling Level Sensor ...............................2-3

ISO9001 ......................................................................................4

Contents .....................................................................................5

Diagram ...................................................................................6-8

Selection Guide .....................................................................9-10

Conformity and Approval .........................................................11

Comparison Table of Explosion-proof Standard.......................12

Liquids (Solids) - Continuous Level Measurement

CG300 New Capacitance Level Measurement...............13-16

CM Capacitive Level Measurement ................................17-20

MS Magnetostrictive Level Measurement .......................21-26

LR Custom Continuous Level Sensor .............................27-30

PL Hydrostatic Pressure Level Monitor ...........................31-34

PLD Hydrostatic Pressure Level Monitor ........................35-38

PK Pressure Level Transmitter ........................................39-40

LA Air Bubble Level Measurement System.....................41-42

Liquids - Point Level Detection

FR20 & OLV20 Magnetic Float Level Sensor ..................43-48

FR51 Explosion Proof Magnetic Float Level Sensor .......49-50

OL, LS, SH, FH Miniature Liquid Level Sensor ...............51-54

FM Side Mounted Float Sensor .......................................55-56FS Wide Differential Float Sensor ....................................57-58

FC Cable Suspended Float Sensor with Reed Switch ....59-60

FT Cable Suspended Float Sensor with Micro Switch ....61-62

FQ Cable Suspended Float Sensor for Tumbling Action...63-64

FP Pneumatic Liquid Level Sensor .................................65-66

FE Electrode Level Sensor ..............................................67-68

CE Cable Suspended Electrode Level Sensor ...............69-70

MT Electrical Conductivity Level Sensor .........................71-72

LZ Leakage Oil Sensor ...................................................73-74OX Optical Interface Sensor ...........................................75-76

Liquids and Powders - Point Level Detection

CG New Capacitance Point Level Sensor ......................77-78

KRV Capacitance Level Sensor for Universal Usage .....79-80

KSV Capacitance Level Sensor for Conductive Medium...81-82

K series Specification .....................................................83-88

KRE / KSD Intrinsic Safety Capacitance Level Sensor ...89-92

Compact Type Capacitance Level Sensor .....................93-94

KSV-9N Compact Capacitance Level Sensor .................95-96

Powders - Point Level Detection

VL12, 22, 32 New Vibration Level Sensor .......................97-98

VLS12, 22, 32 Separated Vibration Level Sensor .........99-100

VL612, 622 & VL6200 Intrinsic Safety .........................101-102

VC Small Vibration Level Sensor .................................103-104

VF Flat Face Vibration Level Sensor ...........................105-106

VH High Sensitivity Vibration Level Sensor .................107-108

VM Vibration Level Sensor for small hopper ...............109-110

VP Compact Type Vibration Level Sensor ..................111-112

R7 Rotating Paddle Sensor .........................................113-114

RB Rotating Paddle Sensor ........................................115-116

MWS Microwave Point Sensor ....................................117-118

Solids - Flow Detection

AF10 Acoustical Flow Sensor .....................................119-120

Control Unit

MP2000 Continuous Proportioning Controller .............121-122

RE7000 Relay Unit ......................................................123-124

Typical Applications

Beer ....................................................................................126

Cement ...............................................................................127

Iron & Steel ..................................................................128-130

Plastics ........................................................................131-132

Sugar ...........................................................................133-134

Water treatment ...........................................................135-136

Garbage Incineration Plant .........................................137-138

Semiconductor Manufacturing Process .............................139

Thermal Power Plant ..........................................................140

Biogas Plant ................................................................141-142

Supplementary Data

Flange Comparison Table ..................................................143

NPT Thread and Ferrule .....................................................144

R Thread (PT, BSPT)...........................................................145

G Thread (PF, BSPF) ..........................................................146

Dielectric Constants ...........................................................147

Bulk Density .......................................................................148

Explanation of "IP" Ratings .................................................149

Chemical Resistance Chart ........................................150-152

Abbreviated Explanations ..................................................153

Philosophy of NOHKEN ..........................................................154

This catalog was printed in 2013. Specifications and Products herein are subject to change at any time without any obligation the

part of the manufacturer to notify any person for such revisions or changes.

CONTENTS PAGE PAGE


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Liquid Point Detection


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Solid Point Detection


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SELECTION GUIDEThis flowchart is a sampling for the selection of the proper sensor.Check detailed specifications of your sensor selecting.


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CONFORMITY AND APPROVALTo meet the technical regulations, laws, and

standards around the world, our products aredesigned to meet following conformity andapproval.

1. Explosion ProtectionSome of our products are certified in conjunction

with safety regulations for industrial electrical andmechanical instruments by Research Institute ofIndustrial Safety, designed by Japan Ministry ofLabor.

Flame proof construction Model VL510 series

Model FR510 seriesModel FP510 seriesModel LR520 series

Intrinsically safe

Model KRE65 & KRE seriesModel KSD & KSI seriesModel CM seriesModel MS650 seriesModel VL600 series

2. NK

Model FM-11 is approved to suite ship buildingregulation by Nippon Kaiji Kyokai who is a shipclassification company in Japan.

3. Hygienic standard

Following float sensors are certified in conformity

with standard of Food, Additives, etc. by Japan FoodResearch Laboratories, authorized by the JapanMinistry of Health and Welfare.

Model OLV-2P, Model OLV-2F, Model OLV-5 andModel OLH-3

4. RoHS

We declare under our solo responsibility that thefollowing products are met RoHS directivesModel OLV-2A, Model OLV-2P, Model OLV-2F,Model OLV-5, Model LS11P, Model LS11R,Model LS12P, Model LS12R, Model OLV-20S/S6,

Model OLV-21S/S6, Model OLV-24S/S6,Model OLV-25S/S6, Model OLV-26S/S6,Model OLV-25P, Model OLV-25F2, Model FR20S/S6,Model FR21S/S6, Model FR23S/S6,Model FR24S/S6, Model FR25S/S6(The products shall be without Housing Box.)


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General Description

Model CG300 of integral type is designedfor continuous level measurement of liquids or

chemicals. This sensor adapts the principle ofphase detection and ensures the wide rangeof sensitivity adjustment, insensitive to buildup,and easy adjustment using digital signals. Thissensor can detect Kerosene and Water withoutchanging the circuit board. Model CG300 is notaffected by the resistance of buildup due to thephase detection. However, if it is affected, CG300automatically select reasonable data, and outputthe signal correctly. When the medium inside oftank is changed, CG300 automatically calculatesand output ZERO and SPAN values with one given

point adjusted.

FeaturesEasy operation, easy programmingdK correction Improved buildup insensitivityHigh accuracy operationSuitable for a wide range of materialsLCD for operation status indication

MODEL CG300 NEW CAPACITANCE LEVEL MEASURMENT


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Operational Description

The basic oscillator circuit is of the parallelresonance circuit with L (coil) and C (capacitance

between the electrodes). The oscillation frequency(f) of this circuit is: f=1/2 LC. The frequencywithout material around the sensor (f1) is:f1=1/2 LC, where C is the capacitance withoutmaterial around the sensor (ZORO point). Withmaterial around the sensor, the capacitanceincreases (C+C), and the frequency (f2) is:f2=1/2 L(C+C), where C+C is the capacitancewith material around the sensor (SPAN point). Thesensor detects the frequency change from f1, andgives output (4 to 20mA) corresponding to thechange. With the incorporated microcomputer,offset of output current and reversed output signalsfor ZERO/SPAN points are also available.

Key Features and Benefits

Dielectric constant compensation functionWhen the dielectric constant of medium changes,the conventional products need re-adjustmentof Zero and Span points. Model CG300automatically calculates and output Zero andSpan values with one given point adjusted.

Wide range of measuring mediumsSuccessful operation for measured medium of 30

to 2000 pF

Example of medium

Name Dielectric Constants

Kerosene 2.8

Ammonia 15-25

Isobutyl Alcohl 18.7-31.7

Methyl Alcohol 33-56.6

Water 48-80


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Specifications

Model Integral CG300N CG300F

Separation CG300BN CG300BF

Drawing

Type Standard

Mounting R1 JIS5K50A

Supply Power 100 to 240V AC 10%, 50/60Hz

Power Consumption Integral type: Approx. 7VA Max., Separation type Approx. 6VA Max.

Output Signal 4 to 20mA DC

Load Resistive 600 Max.

Operating Housing -25 to 65C

Temperature Electrode -

10 to 60CMaximum Pressure 100 kPa Max. (Except mounting part)

Maximum Humidity 85% RH Max.

Sensitivity 30 to 2000 pF

Accuracy 0.5% F.S.

Material Housing ADC12

Electrode 304SS

Insulation tube PFA

O-ring FPM/FKM

Radiation fin

Maximum Probe Length 4000mm

Cable Entry G3/4Protection Housing: IP65 / Electrode: IP68

Recommended cable Power supply: IV 2 x 2.0mm2or CVV 2.0mm2x 2C

Output signal / Between sensor and controller: CVV-S 1.25mm2x 2C

*S1 and S2 on the drawing is blanking zone.


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CG300NT CG300FTCGM1100

CG300BNT CGM300BFT

Heat Proof Controller

R1 JIS5K50A

100 to 240V AC 10%, 50/60Hz

Integral type: Approx. 7VA Max., Separation type Approx. 6VA Max.

4 to 20mA DC

600 Max.

-25 to 65C -10 to 60C

-

10 to 130C100 kPa Max. (Except mounting part)

85% RH Max.

30 to 2000 pF

0.5% F.S.

ADC12 SPCC

304SS

PFA

FPM/FKM

304SS

4000mm

G3/4Housing: IP65 / Electrode: IP68 IP20

Power supply: IV 2 x 2.0mm2or CVV 2.0mm2x 2C Separation distance 200m Max.

Output signal / Between sensor and controller: CVV-S 1.25mm2x 2C

*S1 and S2 on the drawing is blanking zone.


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CM SERIES CAPACITIVE LEVEL MEASUREMENT

Features

Wide range of application Measuring range up to 10 meter

Approval

i3aG5

General Description

The CM is designed for continuous levelmeasurement of up to 10 meter for liquids andsolids in containers. The remote controller can bemounted up to 100 meter away from the sensor.Use the CM series where non contact measurementis unacceptable due to operating conditions suchas temperature, pressure, aggressive chemicals,etc. Several models are differentiated by yourapplications.


The metal wire or the metal probe inside of theinsulation tube constitutes a capacitor with themetal container wall or the reference rod. Thecapacitance of medium is converted into highfrequency voltage and current signal proportional tothe level.

Technical Note

The specification of product shall be changed bythe application and operational condition.

The connecting cable can not be shorten orextended at site. The separation distance mustbe informed when you order.


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Specifications

Sensor

Model CM-BN CM-BF CM-BPN CM-BPF CM-YL

Description Standard Stilling tube Wire

Application Liquids / Solids Liquids Solids

Drawing

Mounting R1 JIS10K50A R1 JIS10K50A JIS5K50A


Temperature Detection part -10 to 130C

Maximum Pressure 100 kPa 500 kPa

Maximum Humidity 85% RH

Sensitivity 30 to 2000 pF

Accuracy 3% F.S.

Material Housing AC or ADC12

Detection part 304SS + FEP tube 304SS

Maximum Probe Length 10000mm 4000mm 10000mm

Cable Entry G1/2Protection IP65

Controller

Model CM-A CM-A6

Description Wall mounting Wall and Panel mounting

Supply Power 100/200V AC, 110/220V AC5% 50/60Hz

Power Consumption Approx. 10VA Max Approx. 6VA Max.


Load Resistance 600 Max.

Operating Temperature -10 to 50C


Accuracy 3% F.S.Material AC Steel and Acryl resin

Cable Entry 4-G1/2, G1/4 -

Protection IP54 IP10

Recommended Cable TXE (double shield co-axial cable)


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Controller

Model CM3000 CM7000

Description Controller for CM300 Controller for CM700

Supply Power 100/200V, 110/220, 100, 110, 120, 200, 220,

120/240 AC5% 50/60Hz 240V AC5% 50/60Hz, 24V DC

Power Consumption Approx. 4VA Max. Approx. 4VA or 2.4W Max.



Operating Temperature -10 to 50C -10 to 40C


Accuracy 3% F.S.Material SPCC (Steel Structure) Phenolic

Protection IP10

Recommended Cable CVVS (3-core cable)

Mounting 2 x dia. 4.5 holes (Pitch 175) 2 x dia. 4.5 holes (Pitch 40)


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MODEL MS MAGNETOSTRICTIVE LEVEL MEASUREMENT


The MS series consists of a magnetostrictive wire

in the stemand a permanent magnet insidethe float . The float is the only moving part whichtravels vertically on the stem. Once a pulse currentis induced from the end of the magnetostrictivewire, a tubular magnetic field emanates . Asthe float travels, torsional vibrationis launchedby the interaction between the float magnetic fieldand the magnetostrictive wire. The float position isdetermined by measuring the lapse of time fromthe inducing of a pulse current to the return of the

torsional vibration to the pick-up ().

Features

High Accuracy: 1mm or 0.1% F.S. for SS float2mm or 0.2% F.S. for PVC float

4 to 20mA output Works in a wide range of liquids

Approval

Ex ia II CT5

General Description

The MS series, magnetostrictive levelmeasurement, is especially designed for precise

measurement. With its high accuracy of 1mmor 0.1% F.S. for SS float and 2mm or 0.2%F.S. for PVC float, the MS is ideal for continuouslevel monitoring for beer and other beverages,pharmaceuticals, etc.

We recommend connecting with power unit ofPU2000 for stable operation.

Technical Note

The safety barrier must be connected betweensensor and controller for Intrinsically Safe.MTL722+ (Cooper Industries plc) is recommended,prepared in locally.


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Specifications


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Features

High Accuracy: 1mm for SS float

4 to 20mA output

Compact design for small tank

General Description

The small type of MS series, magnetostrictivelevel measurement, is especially designed forprecise measurement in small tank. With its highaccuracy of 1mm, the MS is ideal for continuouslevel monitoring of storage or blending tank inbeverage, pharmaceutical or other application.The separation type of MS700 and integral type ofMS800 are available.

Operational DescriptionThe MS series consists of a magnetostrictive wirein the stemand a permanent magnet insidethe float . The float is the only moving part whichtravels vertically on the stem. Once a pulse currentis induced from the end of the magnetostrictivewire, a tubular magnetic field emanates . Asthe float travels, torsional vibrationis launchedby the interaction between the float magnetic fieldand the magnetostrictive wire. The float position isdetermined by measuring the lapse of time fromthe inducing of a pulse current to the return of the

torsional vibration to the pick-up ().

MODEL MS700/800 MAGNETOSTRICTIVELEVELMEASUREMENT


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Specifications

Sensor

Model MS700S MS800S

Description Separation Integral

Drawing

Mounting G1"

Supply Power Supplied from MS3500 24V DC 10% 50mA Max.


Load Resistive See fig. 1Operating Housing -10 to 50C -10 to 50C

Temperature Wetted part -10 to 80C -10 to 80C

Maximum Pressure 2 MPa Max. (Except mounting part)

Maximum Humidity 95%RH Max. 85%RH Max.

Minimum Specific Gravity 0.8

Accuracy 1mm

Material Housing 304SS

Flange Stem 304SS

Float 316SSL

Maximum Length of Stem 1000mm

Minimum Length of S1 36mm (Include plug thickness)

Minimum Length of S2 30mm

Cable Entry G1/2

Protection IP65

Recommended Cable 3C2V (Coaxial cable) MVVS (3-core shielded cable)

Controller

Model MS3500

Drawing

Supply Power 100 to 240V AC 10%, 50/60Hz

Power Consumption Approx. 5VA Max. (240V AC)

Output Signal 4 to 20mA DCLoad Resistance 600 Max.

Power Source 15V DC


Maximum Humidity 85% RH Max.

Accuracy 1mm

Material PC/PET

Protection Non Drip-proof

Mounting DIN rail 35 or 2M3 screw mounting


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MODEL LR CUSTOM CONTINUOUS LEVEL SENSOR

FeaturesContinuous level indication4 to 20mA outputVery reliableWide choice of materialsDurable float

Approval

d2G4

General Description

The LR series, custom continuous level sensors,are designed to meet customers requirements

for reliable operation. Models are available inlengths up to 3900mm with a variety of mountingconfigurations. The wide selection of materialsinclude 304SS, 316SS, PVC, CPVC, PP, and others.For stable operation, we recommend using with ourcontroller of Model MP2000 or CU2000.


The LR series consists of the reed switch andresistor on the PCB inside the stem and permanentmagnet inside the float. The float is the onlymoving part which travels vertically on the stem.

A permanent magnet inside the float acts on aseries of closely set reed switches and resistorson the PCB inside the stem. The reed switchesare actuated by the float magnetic field in a 2-3-2 at a time" as the float travels. Accordingly, thetotal resistance value of PCB is changed by floattraveling. The total resistance value is convertedinto voltage and current signals in proportion to thelevel of the liquid.


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Interface Monitor

Model LR series float transmitters can monitorthe interface between two immiscible liquids. Aminimum specific gravity difference of 0.1 can beaccommodated. The weight and buoyancy of themagnetic float will be adjusted so that the float sinksthrough the lighter liquid and rides on the heavier

liquid. This option can be provided if the followingconditions are met:1. Float material is 316 stainless steel2. Minimum specific gravity difference is 0.13. Liquids have a specific gravity of 0.6 or greater

Volume Monitor

The control unit, MP2000-2, is provided with thefunction of volume conversion selected from sevencommon tank shapes as mentioned below.

Horizontal cylinder with flat endsHorizontal cylinder with parabolic endSpherical tank

Cylinder tank with cone bottomCylinder tank with parabolic bottomVertical round tank with flat bottomVertical square tank with flat bottom

Ordering Information


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Specifications


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MODEL PL HYDROSTATIC PRESSURE LEVEL MONITOR

Features

High accuracy and repeatability

Protected against lightning surge Humidity/Dew immunity Minimal temperature error Diaphragm protection

General Description

The PL series, hydrostatic liquid level monitor,is comprised of a sensor and converter. Thiscombination allows measuring of depth up to 100meter. The PL series are ideal for use in waterreservoirs, rivers, dams, deep wells, water gates,and deep tanks.


The sensor converts liquid pressure intocurrent signals proportional to the liquid level. Asemiconductor transducer containing silicon oil anda Hastelloy C-22 sealing diaphragm is employedto achieve accuracy and durability. In order tocompensate for atmospheric pressure the cablecontains a hollow breathing tube. Internal circuitis fully potted to provide immunity from humidity andcondensation.

An integrated lightning arrestor protects thesensor from damage caused by lightning surgesand storm activity.

Advantages

1. Protected against lightning surge

Model PL is provided with integral lightningarrester and surge absorber to protect againstlightning surge.

2. Humidity/Dew immunity Internal circuit is fully potted to avoid humidity or

dew.


33/15632

Surge ProtectionTo protect the PL from damage caused by

lightning or electrical surges, the shield of the cableshall not be grounded. The shield wire in the cableis internally connected with the transducer housing.Thus, without any external grounding, the shieldwire is already grounded through the water and thegrounded tank.

When lightning struck to the cable, the largeelectric current flows from the shield wire to theground through the housing, the water and thetank. This induced current may generate differential

voltage between the positive and the negativesignal wire or between the signal wire and thehousing. The Zener Diode should suppress it andthe Button Arrester should discharge it by flashingto change it into light energy.

Custom Variations

Hypalon cable for corrosive liquidsTerminal box for easy installation and wiringRigid stainless steel pipe for turbulent or fast

stream application

Technical Note

Do not connect to loop power system. The supplypower on the loop power may be decreased, andPL may be malfunctioned.

Open angle control of the rever gate

(The PL is in the stilling tube)

Flange mounting for indoor tank

Deep well monitoring with

Terminal box


34/15633

Specifications

Sensor

Model PL892 PL300 PL410

Description 2-wire Deep well Integral

Drawing

Measuring Range 0-4m, 0-10m, 0-35m, 0-100m 0-50m, 0-100m 0-4m, 0-10m

Supply Power 14 to 30V DC 12VDC 11 to 34V DC

Output 4 to 20mA DC

Load Resistance 500 Max. 300 Max. 650 Max.

Operating Temperature 0 to 50C

Accuracy 0.5% F.S. % F.S. (See below formula)

Lightning Protection 12kV (1.2/50us) - -

Material Housing - ADC12

Body 304SS

Diaphragm Hastelloy C-22 630SS Hastelloy C-22

Cable* PE, PVC, CSM PVC -

Flange - - 304SS

Mounting - - JIS5K50A

Cable Entry - G3/4 G3/4

Protection Housing - IP53 IP53

Body IP68 IP68 IP68Cable Length 15m (100m Max.) 50m -

= [0.5Maximum measuring range (m)/Measuring length (m)]2+0.52

Converter

Model PL8500 PL2000

Drawing

Supply Power 100 to 240V AC 10%, 50/60Hz 90 to 132/180 to 264V AC, 50/60Hz

Power Source 24V DC 20V DC

Power Consumption Approx. 5VA Max. Approx. 2VA Max.

Output 4 to 20mA DC 4 to 20mA DC

Load Resistance 600 Max. 600 Max.

Operating Temperature 0 to 50C 0 to 50C

Material ADC12 ABSCable Entry 2-G1/2

-1-JIS F 15a (G1/2)

Protection IP20 -

Connected sensor PL892 PL892, PL300


35/156


36/15635

Features

High accuracy by digital compensation

Protected against lightning surge Body of sensor is interchangeable

General Description

The PLD series, hydrostatic liquid level monitor,is comprised of a sensor and converter. Thiscombination allows measuring of depth up to 100meter. The PLD series are ideal for use in waterreservoirs, rivers, dams, deep wells, water gates,and tanks. The body of PLD is interchangeable.When the sensor is damaged by direct lightning,it can be easily replaced at site. Moreover, the

replacement cost can be saved by using existingcable.


The sensor converts liquid pressure intocurrent signals proportional to the liquid level.A semiconductor transducer and a HastelloyC-22 diaphragm for PLD120 series and FPM/FKM diaphragm for PLD420 series are employedto achieve accuracy and durability. In order tocompensate for atmospheric pressure the cablecontains a hollow breathing tube. Internal circuitis fully potted to provide immunity from humidity andcondensation.

An integrated lightning arrestor protects thesensor from damage caused by lightning surgesand storm activity.

Advantages

1. Protected against lightning surge

Model PLD is provided with integral lightningarrester and surge absorber to protect againstlightning surge.

2. Humidity/Dew immunity Internal circuit is fully potted to avoid humidity or

dew.

MODEL PLD HYDROSTATIC PRESSURE LEVEL MONITOR


37/15636

Surge ProtectionTo protect the PLD from damage caused by

lightning or electrical surges, the shield of the cableshall not be grounded. The shield wire in the cableis internally connected with the transducer housing.Thus, without any external grounding, the shieldwire is already grounded through the water and thegrounded tank.

When lightning struck to the cable, the largeelectric current flows from the shield wire to theground through the housing, the water and thetank. This induced current may generate differential

voltage between the positive and the negativesignal wire or between the positive and the negativesignal wire or between the signal wire and thehousing. The Zener Diode should suppress it andthe Button Arrester should discharge it by flashingto change it into light energy.

Technical Note

Do not connect to loop power system. The supplypower on the loop power may be decreased, andPLD may be malfunctioned.

Open angle control of the rever gate

Flange mounting for indoor tank

Deep well monitoring with

Terminal box


38/15637

Specifications

Model PLD120 PLD130 PLD420/PLD4300*

Description Standard High Accuracy Waste water

Drawing

Measuring Range 4m, 10m, 35m, 100m 4m, 10m 4m, 10m, 35m, 100m

Supply Power 14 to 30V DC 18 to 26V DC

Output 4 to 20mA DCOperating Temperature 0 to 50C

Accuracy 0.2% F.S. 0.1% F.S. 0.2% F.S.

Lightning Protection 13kV (1.2/50us), 6.5kA (8/20s)

Material Body 316SS

Diaphragm Hastelloy C-22 FPM/FKM

Cable PVC

Weight - - 304SS, 3kg

Protection IP68

Cable Length 15 meter (100m Max.)

Separation distance 1km Max. 100m Max.

*PLD420 and PLD430 need junction box of PLD4300.

Converter

Model PL2500 PL2510

Drawing

Supply Power 85 to 264V AC, 50/60Hz 24V DC 10%

Power Source 24V DC

Power Consumption Approx. 3VA (at 20mA output) Approx. 3VA (at 20mA output)

Input 4 to 20mA DC (2-wire)

Output 4 to 20mA DC

Amplification 1 to 5 times


Operating Temperature -

10 to 50CProtection -

Material PBTMounting 35mm DIN rail

Connected sensor PLD120, PLD130


39/15638

PLD430/PL4300* PLD120-11-02

High Accuracy for Waste Water Munhall Pump

4m, 10m 4m, 10m

18 to 26V DC 14 to 30V DC

4 to 20mA DC (Resistive)0 to 50C

0.1% F.S. 0.2% F.S.

13kV (1.2/50us), 6.5kA (8/20s)

316SS

FPM/FKM Hastelloy C-22

PVC

304SS, 3kg

IP68

15 meter (100m Max.)

100m Max 1km Max.

PL1100

100 to 240V AC, 50/60Hz

24V DC

Approx. 20VA

4 to 20mA DC (2-wire)

4 to 20mA DC

-

600 Max.

0 to 50CIP20

SPCC

2M6 screw mounting

PLD120-11-02


40/15639

Features

Flat face to avoid residual liquid Plastic flange to achieve light weighWide variety of flange materials to suit specific

applicationNo need for Teflon film sheet due to the plastic

flange of high corrosive resistance Easy start-up with no adjustment or setting

General Description

Model PK series, pressure level transmitter, isintegral type of continuous liquid transmitter. Themeasuring depth is selected by 0 to 4m or 0 to 10m.The material of flange is available with PP, PVC,CPVC, 304SS, and 316SS to suit many of specificapplication such as waste water, chemical, purifiedwater, and so on. Model PL2500 is available toconnect with PK series to supply 24V DC power.


The diaphragm at the center of flange, FPM/FKMfor plastic flanges and Hastelloy C-22 for metalflanges, detects the liquid pressure in proportional

to the liquid level. The semiconductor pressuresensor converts the pressure into current signal,and outputs 4 to 20mA DC. In order to compensatefor atmospheric pressure, the housing has a vent toautomatically correct the detection errors caused bythe change in atmospheric pressure.

MODEL PK PRESSURE LEVEL TRANSMITTER


41/15640

Specifications

Model PK120S PK120S6 PK120P PK120V PK120HV

Description 2-wire 2-wire

Drawing

Mounting JIS10K50A JIS10K50A Equivalent

Measuring Range 4m, 10m

Supply Power 24V DC 10%

Output 4 to 20mA DCLoad Resistive 500 Max.

Operating Detection Face 0 to 70C

Temperature Housing 0 to 50C

Accuracy 0.5% F.S.

Material Flange 304SS 316SS PP PVC CPVC

Diaphragm 316LSS FPM/FKM

Housing PVC

Cable Entry G3/4 equivalent

Protection Housing IP65

Wetted part IP68

Connected Converter PL2500, MP2000

Converter

Model PL2500 MP2000

Drawing

Supply Power 85 to 264V AC, 50/60Hz 100 to 240V AC 10% 50/60Hz

Power Source 24V DC 24V DC

Power Consumption Approx. 3VA (at 20mA output) Approx. 20VA Max.

Input 4 to 20mA DC (2-wire) 4 to 20mA DC

Output 4 to 20mA DC 4 to 20mA DC

Amplification 1 to 5 times -

Load Resistance 550 Max. 600 Max.

Operating Temperature -

10 to 50C -

5 to 50CMaterial PBT ABS

Mounting 35mm DIN rail Panel mounting, In conjunction with DIN43700-9696 (Panel cut-out: 92mm92mm)


42/156


43/15642

Specifications


44/15643

MODEL FR20& OLV-20 MAGNETIC FLOATLEVEL SENSOR

Features

Custom manufactured to user specificationsSwitch points are field-adjustable (FR series)ReliableWide choice of materialsLong switch lifeDurable float

General Description

The FR20 and OLV-20 custom level sensors areengineered and manufactured to meet demanding

customer applications for liquid level sensing.Available in a wide range materials and mountingtypes, these sensors are appropriate in mostliquids. The FR20 series is available in lengths up to3900mm with a variety of mounting configurations.The OLV-20 series is physically smaller and has amaximum total length of 500mm.

Interface of two immiscible liquids can bedetected by FR series. The difference of SG isrequired more than 0.1 for SS float, 0.2 for plasticfloat.


These level sensors contain hermetically sealed

reed switches in the stem and a permanent magnetin the float. As a float rises or falls with the level ofliquid, the reed switch activates by the magnet in thefloat.

Applications

The FR20 and OLV-20 have numerous industrial,machinery and process control applications thatinclude some of the following:Control

In processing petrochemicals, iron, steels,chemicals and food

Original Equipment ManufacturingAs a reliable component in boilers, hydraulicequipment, air conditioners, etc

Semiconductor ManufacturingAs a non-contaminating pump control for purewater

Automatic Planting MachineryAs a level control in corrosive plated environments

Selecting the Correct Series

The FR20 series offer a wide range of choicesin floats, mounting configurations, materials, andnumber of switch points, while the OLV-20 seriesoffer smaller dimensions, shorter maximum lengthand lower cost.1. Determine whether an FR20 or OLV-20 series are

required.2. Select the required material for the stem and

floats.3. Select the required mounting type.4. Determine the number of actuation levels

required.5. Determine where the actuating levels should be.

Distances are measured from the inner surface ofthe mounting to the end of the stem.

6. Determine switch operation - normally opened (upON, down OFF) or normally closed (up OFF, downON).

Conformity and Approval

CE (Low Voltage Directive)The FR20 and OLV-20 series without housing is inconformity of EN61010-1: 2nd edition (2001).

RoHS DirectiveThe FR20 and OLV-20 series with material of304SS, 316SS, and 316LSS, but without housing,can be in conformity of RoHS Directive.

NK (Marine Approval)The FR20 and OLV-20 series are approved tosuite ship building regulation by Nippon KaijiKyokai who is a ship classification foundation inJapan, but limited application.


45/156


46/15645

FR20 Series Float Types

Specification


47/156


48/15647

Specification

OLV-20 Series Float Type


49/15648

Switch Rating

Max. Capacity 50VA 50W

Max. Current 0.5A AC 0.5A DC

Max. Voltage 300V AC 300V DC


50/15649

MODEL FR51 EXPLOSION PROOF MAGNETICFLOAT LEVEL SENSOR

Features

Custom made to user specificationsFlameproof as d2G4 by TIISWide variety of materialsUp to 5 switch points

General Description

The FR51series are made specifically for pointlevel detection of flammable liquids in containers.This series are approved as flameproof construction(d2G4) by Technical Institute of Industrial Safety(TIIS), Japanese Ministry of Labor.

Available in a wide variety of materials andmounting types, the FR51series are appropriatefor use in flammable liquids.

The FR51series features a reliable, accuratemode of operation. The stem contains ahermetically sealed reed switch; the float rises orfalls with the level of the liquid, the reed switch isactivated by the permanent magnet inside of float.



51/15650

Specifications

FR51 Series Float Types

Switch Rating

Max. Capacity 110VA 33WMax. Current 0.5A AC 0.3A DC

Max. Voltage 220V AC 110V DC


52/15651

MODEL OL, LS, SH, FH MINIATURE LIQUIDLEVEL SENSOR

Features

Compact size

Low cost Reliability/long switch life Can be used in a wide range of liquids Perfect solution for standard assembly parts of

mass-produced equipment

General Description

These miniature liquid level sensors are designedfor reliable operation in small tanks and containers.Their rugged design and careful engineering makethem the perfect solution for OEM and large volumeapplications.


These level sensors contain hermetically sealedreed switches in the stem and a permanent magnetin the float. As the float rises or falls with the level ofthe liquid, the reed switch activates by the magnetin the float. The operation of the switch, normallyopen or normally close, is easily changed byremoving a retainer and inverting the float.

Conformity

Hygienic standards of Food, additives, etc. by

Japan Food Research Laboratories, see the page 6for details.

Some of sensors are conformed by RoHSdirective. Six materials such as Lead, Mercury,Hexavalent Chromium, Polybrominated Biphenyls,Polybrominated Diphenyl Ethers, and Cadmium arenot contained to these products.

Applications

Typical applications include automatic vendingmachines, photocopiers, small collection tanks,miniature pumping stations, pilot plants and similarsmall-system applications. Controlling delivery of plating liquid Nickel plating liquid is used for surface treatment

of electronic parts. The liquid is automatically fedinto a plating bath with the OLV-2P detecting theupper and lower levels.

Coffee extraction control The OLV-5UN is mounted in the feeding water

tank to detect the lower limit of the hot water. TheOLV-5UN is suitable for food and pharmaceuticalapplications because the float joints are plasmawelded and the surface is buffed smooth.

Hot water control

The high temperature version of OLV-5 is theperfect solution for automatic water boiler tank tokeep it always full. The wetted parts of OLV-5 are316LSS float and 316SS stem/retainer, and it canwithstand up to 120C.


53/15652

Product Summary

OLV-2A: Designed for water applications.

OLV-2P: Use in chemicals, food and portable water.

OLV-2F: Designed for applications involvingcorrosive chemicals and solvents.

OLH-3: Use in water only, horizontal mounting,O-ring seal provided.

OLH-10: Use in chemicals, food and potable water,horizontal mounting.

LS1 P: Suitable for standard assembly parts ofmass-produced water application equipment.

LS1 R: Suitable for standard assembly partsof mass-produced lubricating and hydraulic oilapplications equipment.

OLV-5 & OLV-5UN: Use in most of liquids.2827mm plasma-welded 316LSS float with 316SSstem.

OLV-5UN is a UL recognized component.FH30 & FH50: Continuous operation at 120Cfor FH30 and at 200C for FH50. Both modelswithstand steam cleaning and sterilization.

SH10: Horizontal mounting from outside container.316 stainless steel construction.

OLV-25S/90: Horizontal mounting from insidecontainer.

Protection For Electrical Surges:

1. Over voltage Reed switches are not designed for the direct

switching of inductive loads such as motors,contactors, solenoid valves, and so on. They aresusceptible to damage from over voltage. DONOT EXCEED THE CONTACT RATINGS. Contactshould be wired to miniature relays, suppressorsor similar devices. We recommend the use of ourrelay unit model RE7000.

2. Over current The switching lamps or stray capacity from long

cable length may produce surge current, and thereed switch may be welded. Contact should bewired to our relay unit model RE7000.

Technical Notes1. The sealing compound over the lead wire egress

will keep moisture, but is insufficient to preventwater penetration. Please install in good locationor apply suitable sealant.

2. If there is surface wave motion, use a time-delayrelay to dampen the switch action.

3. The switch should be located away from strongmagnetic fields such as those produced bymotors or solenoid values.

4. Max. Allowable impact is 10G. Shocks greaterthan 10G may damage the switch.

5. Max. Pull load of lead wire is 19.6N. Exceededpulling during installation may damage the switch.

Switch Rating (Max. Resistive Load)


54/15653

Specifications


55/156


56/156


57/15656

Operational DescriptionThe FM series contain a hermetically sealed reed

switch within the stem or flange and a permanentmagnet in the end of the shaft. As the float rises orfalls with the liquid level, the magnet activates thereed switch. Changing the mounting orientation canreverse switch action. They work well as high or lowlevel alarm or control for light-duty applications.

The FM series can be used in any non-hazardoustanks or vessels. However they can be used inhazardous location by connecting with intrinsicsafety barriers. (Local approval for the combination

system use of Intrinsic Safety standard is required.)

Switching Level

Technical NoteTo protect the reed switch against electrical

surges, we recommend the use of our relay unitmodel RE7000. Please see the RE for details.

FM-13 FM-14 FM-16 HM-10

Thread mounting Long stem Interface detection Micro switch

R1-1/2 JIS5K40A JIS5K65A

50VA 0.5A 300V AC, 50W 0.5A 3 00V DC Max. (Resistive)

-10 to 120C -10 to 80C -10 to 120C

2.5 MPa 3 MPa

304SS 304SS

316SS 316SS, Epoxy resin

ADC12 ADC12

G3/4IP44

0.7 0.72 to 1.0* 0.65

1107Min. Operation 1105Min. Operation

*Middle S.G. of two liquids, the difference of SG is recommended more than 0.2.

415

HolesA

(56)

(23)120

155

64

32

130

Max.

140

200 (104)14


58/15657

MODEL FS WIDE DIFFERENTIAL FLOAT SENSOR

Features

Direct pump control Adjustable ON/OFF switching levels Unaffected by magnetic fields Simple installation

General DescriptionThe Model FS is a simple float sensor designed

for top mounting in open tanks or vessels. The FScan be installed by bulkhead, screw-in or flangemounting. Control range is adjustable from 60mmto 1500mm. This sensor is designed for use asa reliable component in hydraulic units, boilers,magnetic cooling equipment, irrigation systems,etc. The model FS is an economical solution foremptying and filling control.


The model FS consists of a micro-switch operatedby a vertical rod and float mechanism. The floatfreely moves between upper and lower stopperswhich are fixed on the rod at the customersrequested points. As the liquid level rises, the floatmoves up until it reaches to the upper stopper. Therod will then be pushed up by the buoyancy offloat, and the micro switch will be operated. Whenthe liquid level falls, the float moves down until itreaches to the lower stopper. Then the rod willbe fallen down by the weight of the float, and themicro switch operation will be reversed. A springmechanism attached to the rod is designed to

provide mechanical hysteresis. During the floattraveling on the rod, the operating state of microswitch is held until the float reaches the upper orlower stoppers.

The stoppers on the rod can be adjusted to obtaindesired switching range, and the 5A rated, single-pole, double-throws switch makes the model FSsuitable for either empty or full operations.

Installation Notes

Installation of the model FS is extremely simpleand easily accomplished. When installing the

switch, the following points should be noted:1. The spring operation tension is factory set, but

may require adjustment on site, especially if thelength of the operating rod is changed. Correctoperation should be checked and the springtension adjusted if necessary.

2. It is important that the shaft and rod be mountedso that their axis is truly vertical.


59/15658


Specification

Model FS-2S

Drawing

Application Open Tank

Mounting Equivalent JIS5K50A t=2

Contact rating 1 SPDT, 250V 5A AC, 125V 0.6A DC (Resistive)

Operating Housing 0 to 55C

Temperature Wetted parts 0 to 80C

Life expectancy 4105Operations

Material Float 304SS

Rod 304SS

Stopper 304SS

Flange 304SS

Bellows Neoprene (Option: Silicon)

Housing Phenol (Cover: Polypropylene)Cable Entry G3/4

Protection IP42

Minimum S.G. 0.85

Operating differential *60mm to 850mm (at L=1000mm)

*The maximum hysteresis is 60mm, when the float is fixed by two stoppers.


60/15659

MODEL FC CABLE SUSPENDED FLOAT SENSOR

FeaturesUsable in corrosive liquidsMounts in limited overhead spaceStable in turbulent liquidsAdjustable switch pointsReliability/Long switch life

General Description

The FC series guard floats are designed for usein applications where the actuation level is too deepfor our model FR (Max. 3.9 meter), where overheadspace is limited, or where there is surface wavemotion. The PVC or Polypropylene float and SCM

cable are compatible with a wide range of corrosiveliquids. The float is protected from turbulence andmotion by a PVC guard. The switch operating levelsare easily adjusted by altering the height of thecable fixing point. The switch operations, NO orNC, are easily changed by inverting the float.

A number of float units can be used togetherto give multiple level switch points in one flangedholder. Each float can be easily assembled on siteand the switch operating points are adjusted bydesired length of cable.

Operational DescriptionThe FC consists of a float on a stem with a reed

switch inside the stem. As the float rises or falls withthe level of the liquid, the reed switch is activated bya permanent magnet in the float.

Technical Note

To avoid personal injury and protect the switch forelectrical surges, connect the float to our relay unitModel RE7000 or similar devices.


61/156


62/15661

MODEL FT CABLE SUSPENDED FLOAT SENSOR

Features

Usable in a wide range of liquids Available NO or NC contacts

Adjustable switch points Reliable/Long switch life Easy installation

General Description

The FT series cable suspended float sensorsare designed for high or low level indication. TheFT series are miniature switch actuated designideally suited to operate pumps, valves and similarequipment used in the sewage or municipalwastewater treatment plant. A high capacity microswitch in the ABS float provides a reliable long lifelevel control.

A number of float units can be used togetherto give multiple level switch points in one flangedholder. Each float can be easily assembled on siteand the switch operating points are adjusted byaltering the length of the cable.


The buoyant float is weighted on one side. Asthe liquid rises, it tilts in a fixed direction to operatethe micro switch, which uses a movable iron ball toactuate the switch.

Chemical Resistance

The ABS covered float and PVC cable arecompatible with a wide range of liquids. However,there are some liquids that may damage thesematerials.

ABS can be quickly damaged by the followingliquids: Aromatics (benzene, toluene, xylene) cause the

float to dissolve. Esters and ketones cause the float to swell.

PVC cable can be used with the followingcautions:

Oils, especially vegetable oils and fats, tend to

absorb the plasticizer of PVC cable. Consequentlythe cable stiffens.If necessary, alternative SCM cable is available

with FT-3A and FT-3B. In general, the resistibilitydepends on concentration, duration of immersion,presence of suspended solids and/or corrosivegasses and temperature. Although these cablesuspended floats are designed for long life, werecommend that they are replaced at adequateintervals.

Technical Notes

The FT-3 is ideal for direct pump control, with 2A250V AC switch rating. For PLC and DCS usage,we recommend to use the FT-2, with 0.1A 125VAC rating.

SCM cable is available with FT-3A and FT-3B. To avoid personal injury and protect the switch for

electrical surges, connect the float to our relay unitModel RE7000 or similar devices.



63/15662

Contact Rating

Specifications

Model FT-2 FT-3 FT-5*1 FT-7*1 FT22/FT33/FT55/FT77

Drawing

Operation Characteristic


Maximum Pressure 200 kPa

Allowable Impact 500 m/s2

Minimum S.G. 0.9 0.8

Operational FT-A Up ON, 10015 Up ON, 18640Characteristic FT-B Down ON, 8010 Down ON, 12320

FT-C SPDT SPDTCable Length 6 meter (Max. 20 meter)

Life Expectancy 2105OperationsMaterial Cable 8.1, PVC*2

Float ABS

Housing ABS

Flange PVC

Weight 3kg, PVC (build in steel)

Rope PE

Mounting JIS10K100A (4 holes)

Cable Entry G3/4

Protection IP45*3

Maximum Detection Points 6

*1 FT-5/FT-7 are only available for maintenance and repair parts of FT55/FT77.

*2 SCM (2-core) cable is optionally available.

*3 IP65 is optionally available.


64/15663

Contact Rating Switch Action

Up ON: FQ-6, FQ-8, FQ-8TDown ON: FQ-6B, FQ-8B

MODEL FQ CABLE SUSPENDED FLOAT SENSOR

Features

One float gives a latched signal between twodifferent levels

Differential and switch level points are easily fieldadjustable

Unique tumbling action eliminates chatter Works in dirty liquids Reliability/Long switch life Easy installation

General Description

The FQ-6 and FQ-8 cable suspended floatsensors are designed to provide the control signalsfor a differential pump control system. These topmounting sensors are suitable for use in a widevariety of open tanks or vessels. The controldifferential in the FQ-6 is adjustable from 270mmto 1000mm and FQ-8 is adjustable from 330mmto 4000mm. The ABS covered float and the PVCcable make them ideal for most pump controlapplications.

A number of float units can be used togetherto give multiple level switch points in one flanged

holder. Each float can be easily assembled on siteand the switch operating points are adjusted byaltering the length of the cable.

Operational DescriptionThe Model FQ contains a hermetically sealed

reed switch, a permanent magnet, and a movableweight.

As the liquid level rises and falls, the movablemagnetized weight slides up and down inside thefloat and acts upon an encapsulated reed switch.The float tumbles at its upper and lower limits. Inthis way the reed switch changes state at the upperlimit and remains in this state until the lower limit isreached and it changes state again.

Chemical ResistanceThe ABS covered float and PVC cable arecompatible with a wide range of liquids. However,there are some liquids that may damage thesematerials.

ABS can be quickly damaged by the followingliquids: Aromatics (benzene, toluene, xylene) cause the

float to dissolve. Esters and ketones cause the float to swell. PVC cable can be used with the following

cautions: Oils, especially vegetable oils and fats,

tend to absorb the plasticizer of PVC cable.Consequently the cable stiffens.If necessary, alternative Hypalon cable is

available with FQ-8. In general, the resistibilitydepends on concentration, duration of immersion,presence of suspended solids and/or corrosivegasses and temperature. Although these cablesuspended floats are designed for long life, werecommend that they are replaced at adequateintervals.

Technical Note

To avoid personal injury and protect the switch forelectrical surges, connect the float to our relay unitModel RE7000 or similar devices.


65/15664

Specifications

Model FQ-6 FQ-8 FQ66 FQ88

Drawing

Operating Temperature*1

-

10 to 50CMaximum Pressure 200 kPa

Minimum S.G. 0.7 0.9

Cable Length 6 meter (Max. 20 meter)

Life Expectancy 1105Operations

Allowable Inpact 100 m/s2 500 m/s2

Material Cable 6.5, PVC 8.1, PVCFloat PP (Float cap ABS) ABS

Housing ABS

Flange PVC

Weight Gray iron casting (Black painting) 3kg, PVC (build in steel)

Rope PE

Mounting JIS10K100A (4 holes)Cable Entry G3/4

Protection IP45*2


*1 FQ-8T (High Temp. Version) is available up to 70C.*2 IP65 is optionally available.

UP ON Actuation UP ON ActuationDOWN ON Actuation DOWN ON Actuation

AA

BB

Switch Actuation AngleA: 35 to 70, B: -30 to -70Control WidthFQ-6: 0.27 to 1mFQ66: Normally set by 270 30mm, if not specified.

Switch Actuation AngleA: 11 to 33, B: -13 to -39Control WidthFQ-8: 0.33 to 4mFQ88: Normally set by 330 30mm, if not specified.


66/15665

MODEL FP PNEUMATIC LIQUID LEVEL SENSOR

Specifications

Features

Low cost: Requires only a standard 1/2 pipe in amaterial compatible with the liquid

Simple installation: Requires only a G1connection at the top of the tank

Reliable: The FP employs a minimum of movingparts. The diaphragm moves a maximum of 2mm.No moving parts are in contact with the liquids

Long life expectancy: The FP is designed for over200,000 operations

General Description

The FP series pneumatic liquid level sensor is adiaphragm actuated sensor. They are designed foruse in high viscous liquids.

The FP series cover the wide range of

applications. The FP-1A, with a neoprenediaphragm, is for general usage. The FP-1S, with aViton diaphragm, is for corrosive atmosphere. TheFP-3, with neoprene diaphragm, is for cost effective.The explosion proof, FP510, is also available, whichis approved as flameproof construction (d2G4)by Technical Institute of Industrial Safety (TIIS),Japanese Ministry of Labor.


67/15666

Operational DescriptionThe SPDT micro switch in the FP is actuated by

compression of a captive air column in the detectingpipe beneath the diaphragm.

Technical Notes1. Pipe coupling shall be airtight by applying a

sealing compound in paste form. Do not use aseal tape.

2. For low level detection, switch operating positionmay rise if the detecting pipe soaks long in liquidbecause pressurized air in the pipe is graduallydissolved into liquid.

3. For high viscous liquid, we recommend to cut thetip of the pipe at a slant or use the bigger pipethan usual 1/2.


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MODEL FE ELECTRODE LEVEL SENSOR

Features

Usable in a wide range of liquidsUp to 6 points detectionSafe low voltage and small currents

Switch points easily adjusted in field

Simple to install and adjust large terminalenclosure for wiring

General Description

The FE series of level sensors are designed forpoint level indication of conductive liquids. Used inconjunction with one or more RE7000 relays, the FEcan reliably detect up to 6 separate levels in tanksup to 6 meter deep. Model CE, cable suspendedelectrode level sensor, is available for deep wellswith the cable length 6 meter standard and 20 metermaximum.

Operating levels can be easily changed in thefield by cutting the length of the electrodes. Thematerial of electrode is selected from 316SS,NW0001 0665, NW0276, and Titanium for thechemical compatibility.


A typical system consists of three majorcomponents, an electrode holder, the electrodes,and a relay unit.

The electrode holder serves as a mechanicalsupport for the electrodes and electrically insulatesthem from the tank. The electrodes are verticallymounted to the holder, above the liquid, with theirlower ends positioned at the required actuationlevels. The relay unit provides the voltage andcurrent required (8V, 5mA AC Max.) for sensing aswell as suitable relay outputs.

Applications

The FE series can be used in any suitable,conductive liquids. Applications involve both alarmpoint detection and pump valve control. Since theFE series contain no moving parts, it is very reliableand can be used in tanks where mixers or othermoving equipment would damage ordinary floatswitches or level detectors.

Electrode Selection

Material Model

316SS FE2 FE22 FE72 FE82NW0001,0665*1 FE3B FE23B FE73B FE83B

NW0276*2 FE3C FE23C FE73C FE83C

Titanium FE4 FE24 FE74 FE84

Carbon FE5 FE25 - -

*1 NW0001,0665 is equivalent with HastelloyB

*2 NW0276 is equivalent with HastelloyC

The electrode material can be selcted according tothe liquid.

316SS: Water, Ammonia, Caustic soda, etc.NW0001,0665: Hydrochloric acid, etc.

NW0276: Low temp. Hydrochloric acid, Sulfuricacid, etc.

Titanium: Seawater, High temp. & concentratedNitric acid, Ferric chloride, etc.

Carbon: Hydrochloric acid, Sulfuric acid, etc.


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70/15669

MODEL CE CABLE SUSPENDED ELECTRODE LEVEL SENSOR

Features

Easy to install for the large tanks or vessels 20 meter Max. cable length Switch points easily adjusted in field Up to 6 detection points

General Description

The CE is designed for use in large tanks orvessel where the FE series can not be used dueto the limitation of electrode length. Used inconjunction with one or more RE7000 relays, theCE can reliably detect up to 6 separate levels intanks up to 20 meter deep. The PVC body, the PVCcable, and selectable electrodes are compatiblewith a wide range of liquids. The material ofelectrode is selected from 316SS, NW0001,0665,

NW0276, and Titanium for the chemicalcompatibility. If necessary, alternative SCM cable isavailable.

Application

The CE series can be used in any suitableconductive liquids. Applications involve both alarmpoint detection and pump valve control. Sincethe CE series contain no moving parts, it is veryreliable and can be used in tanks where mixers orother moving equipment would damage ordinaryfloat sensor or other level detector. The CE seriesconsist of cable, body, and electrode, and electrodeis electrically insulated by the cable and body.Therefore, CE can be installed at the slop wall andthrough the pipe.


When the tips of electrode are touched by theconductive liquids, the current is passed between

electrodes. When the liquid level is decreased fromthe point of electrodes, the current is not passedbetween electrodes. The relay is opened or closedby the block or unblock of current.

Electrode Selection

Material Model

Single Point Multiple Point

316SS CE-5 CE55

NW0001,0665*1 CE-6 CE66

NW0276*2 CE-7 CE77

Titanium CE-8 CE88

*1NW0001,0665 is equivalent with HastelloyB

*2NW0276 is equivalent with HastelloyC


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Specifications

Model CE series

Drawing


Maximum Pressure 200 kPa

Cable Length 6 meter (Max. 20 meter)

Material Cable 6.5, PVCBody PVC

Electrode316SS, NW00010665 (Hastelloy B*1equivalent),

NW0276 (Hastelloy C*1equivalent), Titanium

Housing ABS

Flange PVC

Weight PVC

Rope PE

Mounting JIS10K100A (4 holes)

Cable Entry G3/4

Protection IP45*2


*1 Hastelloy is rsistered name of manufacturer.*2 IP65 is optionally available.

Specifications

Model RE7000

Drawing

Supply Power 90 to 132V/180 to 264V AC, 50/60Hz

Power Consumption Approx. 1.5VA Max.

Relay Contact 1 SPDT, 240V 5A AC, 30V 5A DC (Resistive)

Power Source 8V 5mA AC

Operating Resistance 4 k or less

Release Resistance 15 k or more

Operating Temperature 0 to 50C

Operating Humidity 85%RH Max.

Indication Green LED for power states

Red LED for relay statesSeparation Distance 1km Max.

Use CVV-S 0.75mm2cable

Mounting 11-pin base, plug-in type

Base is optional and must be ordered separately.


72/15671

MODEL MT ELECTRICAL CONDUCTIVITY LEVEL SENSOR

Features

Stable operation with build up of scum and slurry High durability Easy operation of relay unit Easy maintenance

General Description

Model MT system is a conductance actuatedcontrol system utilizing the electrical conductivityof the liquid to carry a small current which whensensed, activates the appropriate controls. Themulti-points probe has the capability to controlseveral pumps and alarms, as well as indication of

levels, using discrete set points.


When AC power is applied to a pair of isolatedelectrodes, without liquid between them, no currentis delivered. When there is liquid, it becomes a partof electrical circuit and a current is delivered.

When liquid contacts the electrode, MT directlydetects the resistance and compares it with thevalue set in the relay unit to determine the liquidpresence, then sends signals to amplifier, causingthe relay to give output signals.

Applications

Model MT system can be used in any suitableconductive liquids. Applications involve both alarmpoint detection and pump valve control. Since MTsystem contain no moving parts, it is very reliableand can be used in tanks where mixers or othermoving equipment would damage ordinary floatsensor or other level detectors.

MT system is very reliable to use in Waste water,Sewage water, Fresh water, and Conductive liquids.Manhole pump control is one of biggest application

for MT system.


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74/15673

Features

Strong for buildupStrongly built sensorExcellent maintainabilityEasy to replace from existing sensor

General Description

Model LZ is designed to detect the leakage oil insump pit, pit in oil retaining wall, pump yard, andetc. Since Model LZ contains no moving parts, itis very reliable and durable. The construction isvery simple, so it is easy to maintain. The principleof operation is to detect the impedance betweenElectrode and earth, so Model LZ is not affected by

the conductive build up.


Model LZ detects impedance between electrodeand earth ground. When the electrode is in water,impedance is low. But when the electrode iscovered by oil, impedance is increased and outputsignal.

Application

Oil leak detection for oil refinery, petrochemical,cogeneration, and power plant

Oil leak detection for storage tank of crude oil andrefined oil in oil refinery plant

MODEL LZ LEAKAGE OIL SENSOR

Oil leak detection for oil refinery, petrochemical,

cogeneration, and power plant

Oil leak detection for storage tank of crude oil andrefined oil in oil refinery plant

Hydraulic Power Plant

Oil detection in leakage waterIn rare case, oil is leakedfrom inlet valve.So, lead detector shall beinstalled for safety.


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77/15676

Specifications

Converter


78/15677

MODEL CG NEW CAPACITANCE POINT LEVEL SENSOR

General Description

Conventional Radio Frequency and Admittancesensors are typically used as inexpensive solutionsfor point level detection, but they are often timesunreliable. The model CG provides reliable,simple, and cost effective point level detection ofliquids, solids, and adhesive conductive medium.Sophisticated application with fluids, operationconditions that requires periodical re-calibrationwith conventional simple sensors due to the

deviation of working conditions like Fluids chemicalconfiguration, Humidity, Temperature, Resistancevalue factor, build up can not normally be coveredwith conventionally simple capacitance levelsensors.

Our new model CG can work well both to simplefluids, difficult fluids, and sophisticated environmentdue to the patent pending circuitry.


The model CG consists of an oscillation circuitand a detection circuit. Both circuits synchronize ata constant 1.4MHz frequency in the air,f1=1/2 LC.

The frequency of detection circuit is changedfrom the air to in the medium by taking in thecapacity of the medium, f2=1/2 L(C+C).

The oscillation circuit automatically followsto synchronize with the frequency of detectioncircuit. When the resonance frequency shifts to thedetection set point, the relay is energized.

Features

One push adjustment by parameter Various function by microprocessor LCD for operation check Improved function for material build up Outstanding reliability No need to adjust in actual liquid


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82/15681

MODEL KSV FOR CONDUCTIVE MEDIUM

Features

Ignores heavy conductive build upSingle probe/Mechanically strong

General Description

The KSV series of capacitance sensors are madespecifically for point level detection of conductivemedium. Applications include water, chemicalsolutions, acid based slurries, conductive granules,and sticky liquids.

Build up is one of the most common problemsfor capacitance sensors. Conventional RadioFrequency sensors solve this problem by using aguard probes (the second or third element to theelectrode). But this complicated probe constructiontends to make probes easily broken, particularlyif twisted in agitated containers. Consequently,conventional RF sensors are installed vertically andlimited to a fixed length, foamed in one piece.

The KSV series have overcome this limitationby using the series resonance circuit and a singleelectrode. This circuit corrects for conductive

build up by measuring its resistance. The singleelectrode can be mounted in virtually any positionand is available with a number of standardmountings.


The electrode of the KSV is a part of theoscillation circuit. When the electrode is in the freeair, the oscillation is stopped. When it is in medium,the oscillation is restored by measuring capacitanceof medium and the relay is energized.

Applications

Liquids (except for oil): Water, Caustic soda,

Hydrochloric acid, nitric acid, Sulfuric acid, etc.Sticky conductive medium: Drainage, Dehydratedcake, Night soil, Sewage, Sludge, Slurry, etc.


83/15682


Ignores Heavy Conductive Buildup

The characteristics of the KSV circuit are defined by:

b> c: Oscillation stops (The electrode is in the air.)b c so that oscillation cannot start ( ).

When actual medium level is covering the electrode,

b decreases by taking in C(). This meansb


84/15683

Technical Note

The heat resistive type is optionally available up to 400C.Form detection and insulated tube types are optionally available.

Specifications

Model 1NH 1FH 2NH 2FH

Description Standard

Drawing

Mounting R3/4 JIS5K25A R3/4 JIS5K25ASupply Power KRV 100 to 120V AC, 200 to 240V AC or 24V DC

KSV 100/200, 110/220, 120/240V AV or 24V DC

Power KRV Approx. 2.5VA Max.

Consumption KSV Approx. 2.2VA Max.

Relay Output 1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)

C-A: Normally Open contact

C-B: Normally Closed contact

Detection KRV Adjustable between 0.5 to 10 seconds

Time Delay KSV Not provided


Temperature Electrode -20 to 60C

Maximum Pressure 1 MPaMaximum Humidity 85% RH


Electrode 304SS*

Insulator PTFE*

O-ring FPM/FKM*

Cable Entry G1/2

Protection IP65

Length of Standard 250mm

Electrode Option 50 to 4000mm

*Other materials are available.

*Specification of products shall be changed by the application and operational condition.


85/15684

3NH 3FH 4NH 4FH

Heavy duty Heavy duty Heat proof

R1 JIS5K25A R1 JIS5K25A100 to 120V AC, 200 to 240V AC or 24V DC

100/200, 110/220, 120/240V AV or 24V DC

Approx. 2.5VA Max.

Approx. 2.2VA Max.

1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)



Adjustable between 0.5 to 10 seconds

Not provided

-10 to 55C -10 to 55C

-20 to 60C -20 to 180C

1 MPa85% RH

ADC12

304SS*

PTFE*

FPM/FKM*

G1/2

IP65

250mm

50 to 4000mm


86/15685

Specifications

Model 5FH 6FH 7FH 8FH

Description Flash probe Wire extension Pipe type Stick proof type

Drawing

Mounting JIS5K50A JIS5K50A JIS5K50A JIS5K50A

Supply Power KRV 100 to 120V AC, 200 to 240V AC or 24V DC

KSV 100/200, 110/220, 120/240V AV or 24V DC

Power KRV Approx. 2.5VA Max.

Consumption KSV Approx. 2.2VA Max.

Relay Output 1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)



Detection KRV Adjustable between 0.5 to 10 seconds

Time Delay KSV Not provided

Operating Housing -

10 to 55CTemperature Electrode -20 to 60C

Maximum Pressure 1 MPa 500 kPa 100 kPa 1 MPa



Electrode 304SS* C3604BD 304SS*

Insulator PE* FEP (Pipe) FRP

O-ring FPM/FKM*

Cable Entry G1/2

Protection IP65

Length of Standard 65mm 1000mm 250mm

Electrode Option 5 to 500mm 500 to 10000mm 50 to 4000mm

*Other materials are available.

Holes

(111)

(154)

(76)

14

L

35

20 20

415

105

130

114


87/15686

9NH 9FH 25FH

Special type High Sensitivity

R1 JIS5K50A JIS5K50A

100 to 120V AC, 200 to 240V AC or 24V DC

100/200, 110/220, 120/240V AV or 24V DC

Approx. 2.5VA Max.

Approx. 2.2VA Max.

1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)



Adjustable between 0.5 to 10 seconds

Not provided

-

10 to 55C-20 to 60C

1 MPa

85% RH

ADC12

304SS*

PTFE*

FPM/FKM*

G1/2

IP65

250mm

50 to 4000mm


88/15687

Special type of sensor

Specifications

Description 2 points detection 3 points detection 4 points detection

Drawing

ApplicationMulti points detection by one sensor

A

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