capacitance level sensor, model cg, k...
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Capacitance Level Sensor, Model CG, K series
Selection Guide
Capacitance Level Sensor, Model CG, K series
Selection Guide
High
∞Ω
PlasticOil
ButterAlumina
RiceOats
SesameSilicon oilChocolateOil paint
FreonLime hydrate
Fly ashSand
StarchSyrup
Capacitance Level Sensor, Model CG, K series
Selection Guide
Silicon oilChocolate
Lime hydrate
AlcoholBeer
Culture fluidWhip cream
Water inkUrethaneBlast sand
Capacitance Level Sensor, Model CG, K series
AlcoholBeer
Culture fluidWhip cream
Water inkUrethaneBlast sand
KRV / KRS
Capacitance Level Sensor, Model CG, K series
AmmoniaSoy Milk
Water paintNight soil
Facial creamClay
Tap water
KRV / KRS
KSV-
1
Capacitance Level Sensor, Model CG, K series
AmmoniaSoy Milk
Water paintNight soil
Facial creamClay
Tap water
WaterMixed concrete
Model
Sensitivity
Resistance
CG
-9N & PR2100
Capacitance Level Sensor, Model CG, K series
MilkSlurryPulp
Water waxMixed concrete
Sensitivity
Resistance
KSV
& PR2100-7U
Capacitance Level Sensor, Model CG, K series
Mixed concrete
Soy sauceAlkali
Caustic sodaHydrochloric acidSulphuric acid
Milk limeElectrolyteDetergentShampoo
Rinse
KSV
Capacitance Level Sensor, Model CG, K series
Soy sauceAlkali
Caustic sodaHydrochloric acidSulphuric acid
Milk limeElectrolyteDetergentShampoo
Rinse
Dehydrated cakeDrainage of animal
Low
2Ω
Bean pasteMinced fish
CarbonSludge
Dehydrated cakeDrainage of animal
Sauce
Low
2Ω
Bean pasteMinced fish
Dehydrated cakeDrainage of animal
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Capacitance Level Sensor, Model CG, K series
Features of Model CG
Easy adjustment by parameterAdjustment can be easily done by using 4 push button switches to select parameter and entersetting value. The setting error by personal difference can be avoided. Moreover, tester and toolare not required.
Various functions by microprocessorSensitivity adjustment, Delay timer, Switchover of relay output, Setting function of detection level,Self-diagnostic function are all available.
Operation LCD displayCan be check all operative condition on LCD by 6 digit display, status display, 8 segment bar graphdisplay.
Improvement of function for adhesionThe operational principle is different with conventional principle for detecting changes in voltage(frequency). The sensor may not be affected by resistance of adhesion due to the detection ofchanges in capacitance value to changes in frequency.
Outstanding reliabilityOutstanding reliability with dielectric constant as low as 1.2.
Features of KRV Series
Outstanding reliabilityOutstanding reliability with dielectric constant as low as 1.1.
Easy to change the sensitivityThe sensitivity can be easily changed by 5 selection sensitivity switches.
Operation LED displayOperation condition can easily checked by Red LED.
Features of KSV Series
Suitable for high adherent medium and high conductivity medium
The series resonance circuit corrects for conductive build up by measuring its resistance.
Easy to set the sensitivityThe sensitivity can be changed by high and low sensitivity switch and sensitivity volume.
3
Capacitance Level Sensor, Model CG, K series
Comparative Table
Model CG KRV Series KSV Series
Dielectric constant 1.2 1.1 N/A
Sensitivity Setting Parameter 5 selection switch High/Low switch
Sensitivity
More than 1pF A≧0.5pF H≧5pF
B1≧3pF L≧90pF
B2≧5pF
C≧200pF
D≧4000pF
Tool for adjustment Not required Tester, Screwdriver Tester
Reliability Excellent High High
Operability Excellent High High
Variety of Model Excellent Middle Middle
Range of application Wide Middle Narrow
Conductive medium Depend on the application Depend on the application Recommend
Heavy adherent medium Depend on the application Depend on the application Recommend
Example of adhesion
Sauce Ketchup Mayonnaise Shampoo Rinse Milk
Recommend Model
CG CG CG CG CG CG
KRV KRV KRV
KSV KSV KSV KSV KSV KSV
KSV-9N
4
Capacitance Level Sensor, Model CG, K series
Industrial Classification
CG K Series KSV-9N
Power, Gas, Municipal, Public ■ ■ ■
Food, Pharmaceutical ■ ■ ■
Pulp, Paper ■ ■ ■
Petrochemical, Chemical ■ ■ ■
Cement, Glass ■ ■ ■
Steel, Non-ferrous metal ■ ■ ■
Car, Ship ■ ■ ■
Medical or Physical Equipment ■ ■ ■
Electric or Electric Equipment ■ ■ ■
Industrial Equipment ■ ■ ■
Application Guide
High level detection for fermentation tank
There is the bubble on the surface of fermentation tank atbeer factory. It is difficult to detect bubble by capacitancesensor, because the capacity of bubble is almost same withair. However, our capacitance sensor is available withdetection plate at the tip of electrode for bubble detection.
High and low level detection for cacao mash
Although highly viscous cacao mash build up on the probe,Model CG accurately works at the calibrated position.
5
Capacitance Level Sensor, Model CG, K series
Application Guide
Additive level of blending process and Pigment level of coaster process
In blending process, several additives such as aluminumsulfate, clay, talc, and calcium carbonate are pasted on thepaper to prevent the ink from blotting, and to smooth thepaper. Pigment (Kaolinite) is pasted on color printingpapers to prevent the ink from blotting. Model CG and KSVseries are ideal for heavy viscosity and build up.
High level detection of acrylic resin (solids) and dissolved resin by solvent (liquid)
Model CG withstands static electricity and heavy build-up.To consider chemical resistance, probe material is 316Stainless Steel, and insulator is PTFE with FPM/FKM O-ring.
Cement silo at finishing process
Cement and its raw material normally contain moisture.Model CG and K series are not affected by the change ofmoisture and build- up. On the other hand, dry cement fedby a pneumatic conveyor holds high static electricity.Model CG and K series, however, discharge it, as the sensorhas an earth terminal.
6
Capacitance Level Sensor, Model CG, K series
Application Guide
Pharmaceutical (Solid Tablet)
Lubricants are used to add into mixed powders to avoid itfrom sticking to the hopper or to the tablet machine.Model CG and K series show stable operation althoughlubricants are fluidized.
The pneumatic conveyor
The pneumatic conveyor transmits plastic resins or powderswith pneumatic pressure. Model CG and K series aresuitable for high level detection in this pressurized hopper toprevent powders from sticking to the probe. It withstandsstatic electricity by discharging to the earth.
Interface detection
Model CG and KRV series are ideal for the interfacedetection of two immiscible liquids. Interface detectionbetween oil and water is typical application. The outputrelay is energized by water and de-energized by oil.
7
CG SeriesCapacitance Level Sensor (Phase Detection Principle)
Products Overview
We, NOHKEN INC., have plenty of experience with capacitance levelsensor for more than 30 years, and we consolidate all experience intoCG series. CG series employ phase detection principle which thechanging of resonance frequency is processed by microprocessor(digital circuit) and the changes in capacitance value is detected bychanges in frequency value.
Principle of Operation
The basic oscillator circuit is of the parallel resonance circuit with L (coil) and C (capacitance between
the electrodes). The oscillation frequency (f) of this circuit is: f = 1/2 π √LC. The frequency without
material around the sensor (f1) is: f1 = 1/2 π √LC, where C is the capacitance without material aroundthe sensor (zero point). With material around the sensor, the capacitance increases (C+ΔC), and the
frequency (f2) is: f2 = 1/2 π √L(C+ΔC), where C+ΔC is the capacitance with material around the sensor(span point). The sensor detects the frequency change from f1 to f2, and gives a relay output. Thefrequency range can be divided into 8 segments (between zero and span), and the set and reset pointscan be set on desired segments, thus enabling high limit, low limit and hysteresis settings.
Housing
Earth rod
Electrode rod Insulator
Electrode
With material around the sensor
Set
ZERO
SPANWithout material
around the sensor
* Divide the range into 8 segments, and set ON and OFF
points. Hysteresis setting is also available.
8
Model CGCapacitance Level Sensor (Phase Detection Principle) Integral Type, CE Marking
Model CG-2NK CG-2FK CG-3NK CG-3FK
Dimensions
Description Standard Pressure Proof
Mounting R3/4 (*1) JIS5K25A FF (*1) R1 (*1) JIS5K25A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (4000mm Max.) 250mm (1000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode 304SS (*2)
Insulator PTFE (*2)
O-ring FPM/FKM (*2)
SensitivityDielectric constant 1.2 Min.
Capacitance between electrode 1.0pF Min.(But resistance between electrode 10kΩ Min. at L=250mm)
Relay Output1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)
C-NO: Normally open contactC-NC: Normally close contact
Detection Time Delay Programmable between 0.0 to 25.5 seconds
Power Supply 100 to 240V AC ±10%, 50/60Hz (24V DC in option)
Power Consumption Approx. 6VA
OperatingTemperature
Electrode -20 to 60℃ (without dew)
Housing -25 to 65℃ (without dew)
Operating Pressure 1 MPa Max. 3 MPa Max.
Operating Humidity 85% RH Max.
*1: The other mounting is optionally available.
*2: The other material is optionally available.
*The specifications are subject to change without notice.
9
Model CGCapacitance Level Sensor (Phase Detection Principle) Integral Type, CE Marking
Model CG-4NK CG-4FK CG-5FK CG-6FK
Dimensions
Description Pressure and Heat Proof Flat Type Wire Type
Mounting R1 (*1) JIS5K50A FF (*1) JIS5K65A FF (*1) JIS5K50A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (1000mm Max.) 65mm (1000mm Max.) 100mm (1000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode 304SS (*2)
Insulator PTFE (*2) PE (*2)
O-ring FPM/FKM (*2)
SensitivityDielectric constant 1.2 Min.
Capacitance between electrode 1.0pF Min.(But resistance between electrode 10kΩ Min. at L=250mm)
Relay Output1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)
C-NO: Normally open contactC-NC: Normally close contact
Detection Time Delay Programmable between 0.0 to 25.5 seconds
Power Supply 100 to 240V AC ±10%, 50/60Hz (24V DC in option)
Power Consumption Approx. 6VA
OperatingTemperature
Electrode -20 to 180℃ (without dew) -20 to 60℃ (without dew)
Housing -25 to 65℃ (without dew)
Operating Pressure 3 MPa Max. 1 MPa Max. 500 kPa Max.
Operating Humidity 85% RH Max.
*1: The other mounting is optionally available.
*2: The other material is optionally available.
*The specifications are subject to change without notice.
10
Model CGCapacitance Level Sensor (Phase Detection Principle) Integral Type, CE Marking
Model CG-7FK CG-8FK CG-9FK CG-25FK
Dimensions
Description Pipe Type Adhesion Proof Special Type High Sensitivity
Mounting JIS5K50A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (2000mm Max.) 250mm (4000mm Max.) 250mm (2000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode C3604BD 304SS (*2)
Insulator FEP (Pipe) FRP PTFE (*2) PE (*2)
O-ring FPM/FKM (*2)
SensitivityDielectric constant 1.2 Min.
Capacitance between electrode 1.0pF Min.(But resistance between electrode 10kΩ Min. at L=250mm)
Relay Output1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)
C-NO: Normally open contactC-NC: Normally close contact
Detection Time Delay Programmable between 0.0 to 25.5 seconds
Power Supply 100 to 240V AC ±10%, 50/60Hz (24V DC in option)
Power Consumption Approx. 6VA
OperatingTemperature
Electrode -20 to 60℃ (without dew)
Housing -25 to 65℃ (without dew)
Operating Pressure 100 kPa Max. 1 MPa Max.
Operating Humidity 85% RH Max.
*1: The other mounting is optionally available.
*2: The other material is optionally available.
*The specifications are subject to change without notice.
11
Model CGS, CG65Capacitance Level Sensor (Phase Detection Principle) Separate Type
ModelStandard CGS-2N CGS-2F CGS-3N CGS-3F
Intrinsically Safe CG65-2N CG65-2F CG65-3N CG65-3F
Dimensions
Description Standard Pressure Proof
Mounting R3/4 (*1) JIS5K25A FF (*1) R1 (*1) JIS5K25A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (4000mm Max.) 250mm (1000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode 304SS (*2)
Insulator PTFE (*2)
O-ring FPM/FKM (*2)
Sensitivity
Dielectric constant 1.2 Min.
Capacitance between electrode 1.0pF Min.
(But resistance between electrode 10kΩ Min. at L=250mm)
Detection Time Delay Programmable between 0.0 to 25.5 seconds
OperatingTemperature
Electrode-20 to 60℃ (without dew) for standard
-20 to 50℃ (without dew) for Intrinsically Safe
Housing-25 to 65℃ (without dew) for standard
-20 to 50℃ (without dew) for Intrinsically Safe
Operating Pressure 1 MPa Max. 3 MPa Max.
Operating Humidity 85% RH Max.
Connecting Converter CGS1000 series for standard, CGS6000 series for Intrinsically Safe
*1: The other mounting is optionally available.
*2: The other material is optionally available.
*The specifications are subject to change without notice.
12
Model CGS, CG65Capacitance Level Sensor (Phase Detection Principle) Separation Type
ModelStandard CGS-4N CGS-4F CGS-5F CGS-6F
Intrinsically Safe CG65-4N CG65-4F CG65-5F CG65-6F
Dimensions
Description Pressure and Heat Proof Flat Type Wire Type
Mounting R1 (*1) JIS5K50A FF (*1) JIS5K65A FF (*1) JIS5K50A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (1000mm Max.) 65mm (1000mm Max.) 100mm (1000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode 304SS (*2)
Insulator PTFE (*2) PE (*2)
O-ring FPM/FKM (*2)
SensitivityDielectric constant 1.2 Min.
Capacitance between electrode 1.0pF Min.(But resistance between electrode 10kΩ Min. at L=250mm)
Detection Time Delay Programmable between 0.0 to 25.5 seconds
OperatingTemperature
Electrode-20 to 180℃ (without dew) for standard -20 to 60℃ (without dew) for standard
-20 to 180℃ (without dew) for Intrinsically Safe -20 to 50℃ (without dew) for Intrinsically Safe
Housing-25 to 65℃ (without dew) for standard
-20 to 50℃ (without dew) for Intrinsically Safe
Operating Pressure 3 MPa Max. 1 MPa Max. 500 kPa Max.
Operating Humidity 85% RH Max.
Connecting Converter CGS1000 series for standard, CGS6000 series for Intrinsically Safe
*1: The other mounting is optionally available.
*2: The other material is optionally available.
*The specifications are subject to change without notice.
13
Model CGS, CG65Capacitance Level Sensor (Phase Detection Principle) Separation Type
ModelStandard CGS-7F CGS-8F CGS-9F CGS-25F
Intrinsically Safe CG65-7F CG65-8F CG65-9F CG65-25F
Dimensions
Description Pipe Type Adhesion Proof Special Type High Sensitivity
Mounting JIS5K50A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (2000mm Max.) 250mm (4000mm Max.) 250mm (2000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode C3604BD 304SS (*2)
Insulator FEP (Pipe) FRP PTFE (*2) PE (*2)
O-ring FPM/FKM (*2)
SensitivityDielectric constant 1.2 Min.
Capacitance between electrode 1.0pF Min.(But resistance between electrode 10kΩ Min. at L=250mm)
Detection Time Delay Programmable between 0.0 to 25.5 seconds
OperatingTemperature
Electrode-20 to 60℃ (without dew) for standard
-20 to 50℃ (without dew) for Intrinsically Safe
Housing-25 to 65℃ (without dew) for standard
-20 to 50℃ (without dew) for Intrinsically Safe
Operating Pressure 100 kPa Max. 1 MPa Max.
Operating Humidity 85% RH Max.
Connecting Converter CGS1000 series for standard, CGS6000 series for Intrinsically Safe
*1: The other mounting is optionally available.
*2: The other material is optionally available.
*The specifications are subject to change without notice.
14
Model CGS, CG65Capacitance Level Sensor (Phase Detection Principle) Separation Type
ModelStandard CGS1000 CGS1010 CGS1100 CGS1110
Intrinsically Safe CGS6000 CGS6010 CGS6200 CGS6210
Dimensions
Description Wall Mount Rack Mount
Material AC SPCC (Acrylic painting)
Protection IP54 IP20
Cable Entry 3 ×G1/2 2×φ 15 holes
Mounting 2×φ 7 holes 2×φ 4.5 holes
Relay Output
1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)
C-NO: Normally open contact
C-NC: Normally close contact
Operating Temperature -20 to 60℃ (without dew)
Power Supply 100-240V AC ±10%, 50/60Hz 24V DC 100-240V AC ±10%, 50/60Hz 24V DC
Power Consumption Approx. 6VA
Connecting Sensor CGS series for standard, CG65 series for Intrinsically Safe
*The safety barrier must be connected between sensor and amplifier for intrinsically safe.
*Z787 (PEPPERL + FUCHS) is recommended for CGS6000 and CGS6010.
*CGS6200 and CGS6210 are safety barrier (Z787) built-in type.
*The specifications are subject to change without notice.
15
KR SeriesCapacitance Level Sensor (Parallel Resonance Circuit)
Products Overview
The KR series of capacitance sensors are designed for point leveldetection of liquids, solids, powder, or interface between two immiscibleliquids. The radio frequency sensors are typically used to detect liquids,but have a difficult time with solids or powder materials. The KR seriesovercome this limitation by having a parallel resonance circuit on itsoscillator and five switch selected sensitivity ranges. The KR series easilydetect solids and powder materials such as plastic powder and pellet, flyash, carbon black, and similar substances. The KR series reliably detectthe interface between two immiscible liquids, oil and water as anexample. The KR series can be set to operate in water but not in oil.
Principle of Operation
When the electrode is in free air, the oscillation circuit synchronizes with the detection circuit. Whenthe electrode is in the medium, the synchronization between the oscillation circuit and detection circuitbreaks with the capacitance of the medium being taken in. This difference is then converted into therelay output.
Sensitivity Settings for Applications
"A" sensitivity: more than 0.5 pF, ∞ to 100kΩ
For solids and liquids (ε S≦1.1) such as Aluminum powder, Calcium carbonate, Cement, Fly ash, Ink,Paint, Plastic resin, etc.
"B1" sensitivity: more than 3pF, 100kΩ to 50kΩ
For solids and liquids (εS≦2.2) such as Coffee powder, Feed, Flour, Oil, Starch, etc.
"B2" sensitivity: more than 5pF, 50kΩ to 30kΩ
For solids and liquids (εS≦3.0) such as Grain, Sand, Sugar, Water, etc.
"C" sensitivity: more than 200pF, 2kΩ to 200Ω
For solids and liquids (εS≦50) such as Dehydrated cake, Drainage, Night sol, Sewage, Slurry, etc.
"D" sensitivity: more than 4000pF, 500Ω to 2Ω
For liquids (εS≦90) such as Chemical slurry, Quicklime (liquid), etc.
Note: Normally, NOHKEN will set the proper sensitivity range before shipment in accordance with yourspecified medium when order.
16
KS SeriesCapacitance Level Sensor (Series Resonance Circuit)
Products Overview
KS series of capacitance sensors are made specifically for point level detectionof conductive medium. Applications include water, chemical solutions, acidbased slurries, conductive granules, and sticky liquids. Buildup is one of mostcommon problems for capacitance sensors. The radio frequency sensorsolves this problem by using a guard probes. But complicated probeconstruction tends to make probe easily broken. KS series overcome thislimitation by using the series resonance circuit and single electrode. Thiscircuit corrects for conductive buildup by measuring its resistance. Thesingle electrode can be mounted in vertically and position and is availablewith a number of standard mounting.
Principle of Operation for KS series
The electrode of KS series is a part of the oscillation circuit. When the electrode is in the free air, theoscillation is stopped. When it is in medium, the oscillation is restored by measuring capacitance ofmedium and the relay is energized.
Sensitivity Settings for Applications
H Range: more than 5pF, R=more than 1.5kΩAlcohol, Syrup, Water paint, Tap water
L Range: more than 90pF, R=more than 800ΩSlurry, Pulp, Mixed concrete, Caustic soda, Sodium chloride, Dehydrated cake
Ignores Heavy Conductive Buildup
The characteristic of KSV circuit is defined by:
① b>ω c: Oscillation stops (The electrode is in the air.)
② ωb<ω c: Oscillation starts (The electrode in in the medium.)
③ ω b=1/(C+Δ C)・R.
ωb: Frequency when the electrode is covered by medium.
ωc: Adjusted frequency when the electrode is in air.C: The stray capacitance of the electrode.Δ C: The capacitance of medium.R: Resistance of medium.
When a conductive resistance builds up forms on the electrode, ωb increases as R falls (③). This
means ωb>ωc so that oscillation can not start (①). When actual medium level is covering the
electrode, ωb decrease by taking in ΔC (③). This means ωb<ωc so that oscillation starts andthe relay energizes. In this way, by taking resistance of conductive buildup and cancelingcapacitance of that, KSV prevents false relay trips.
17
KR/KS SeriesCapacitance Level Sensor Integral Type
Model of Electrode 2NH 2FH 3NH 3FH
Dimensions
Description Standard Pressure Proof
Model of Amplifier KRV, KSV
Mounting R3/4 (*1) JIS5K25A FF (*1) R1 (*1) JIS5K25A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (4000mm Max.) 250mm (1000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode 304SS (*2)
Insulator PTFE (*2)
O-ring FPM/FKM (*2)
Operating Indication LED lighting (Red)
Relay Output1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)
C-A: Normally open contactC-B: Normally close contact
Detection Time Delay Adjustable between 0.5 to 10 seconds
PowerSupply
KRV 100 to 120 / 200 to 240V AC ±10%, 50/60Hz (24V DC in option)
KSV 100V or 200V AC ±10%, 50/60Hz (24V DC in option)
PowerConsumption
KRV Approx. 2.5VA
KSV Approx. 4VA
OperatingTemperature
Electrode -20 to 60℃ (without dew)
Housing -10 to 65℃ (without dew)
Operating Pressure 1 MPa Max. 3 MPa Max.
Operating Humidity 85% RH Max.
*1: The other mounting is optionally available.
*2: The other material is optionally available.
*The specifications are subject to change without notice.
18
KR/KS SeriesCapacitance Level Sensor Integral Type
Model of Electrode 4NH 4FH 5FH 6FH
Dimensions
Description Pressure and Heat Proof Flat Type Wire Type
Model of Amplifier KRV, KSV
Mounting R1 (*1) JIS5K50A FF (*1) JIS5K65A FF (*1) JIS5K50A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (1000mm Max.) 65mm (1000mm Max.) 100mm (1000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode 304SS (*2)
Insulator PTFE (*2) PE (*2)
O-ring FPM/FKM (*2)
Operating indication LED lighting (Red)
Relay Output1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)
C-A: Normally open contactC-B: Normally close contact
Detection Time Delay Adjustable between 0.5 to 10 seconds
PowerSupply
KRV 100 to 120 / 200 to 240V AC ±10%, 50/60Hz (24V DC in option)
KSV 100V or 200V AC ±10%, 50/60Hz (24V DC in option)
PowerConsumption
KRV Approx. 2.5VA
KSV Approx. 4VA
OperatingTemperature
Electrode -20 to 180℃ (without dew) -20 to 60℃ (without dew)
Housing -10 to 55℃ (without dew)
Operating Pressure 3 MPa Max. 1 MPa Max. 500 kPa Max.
Operating Humidity 85% RH Max.
*1: The other mounting is optionally available.*2: The other material is optionally available.*The specifications are subject to change without notice.
19
KR/KS SeriesCapacitance Level Sensor Integral Type
Model of Electrode 7FH 8FH 9FH 25FH
Dimensions
Description Pipe Type Adhesion Proof Special Type High Sensitivity
Model of Amplifier KSV, KRV
Mounting JIS5K50A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (2000mm Max.) 250mm (4000mm Max.) 250mm (2000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode C3604BD 304SS (*2)
Insulator FEP (Pipe) FRP PTFE (*2) PE (*2)
O-ring FPM/FKM (*2)
Operating Indication LED lighting (Red)
Relay Output1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)
C-A: Normally open contactC-B: Normally close contact
Detection Time Delay Adjustable between 0.5 to 10 seconds
PowerSupply
KRV 100 to 120 / 200 to 240V AC ±10%, 50/60Hz (24V DC in option)
KSV 100V or 200V AC ±10%, 50/60Hz (24V DC in option)
PowerConsumption
KRV Approx. 2.5VA
KSV Approx. 4VA
OperatingTemperature
Electrode -20 to 60℃ (without dew)
Housing -10 to 55℃ (without dew)
Operating Pressure 100 kPa Max. 1 MPa Max.
Operating Humidity 85% RH Max.
*1: The other mounting is optionally available.
*2: The other material is optionally available.
*The specifications are subject to change without notice.
20
KRS SeriesCapacitance Level Sensor Separation Type
Model KRS-2N KRS-2F KRS-3N KRS-3F
Dimensions
Description Standard Pressure Proof
Mounting R3/4 (*1) JIS5K25A FF (*1) R1 (*1) JIS5K25A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (4000mm Max.) 250mm (1000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode 304SS (*2)
Insulator PTFE (*2)
O-ring FPM/FKM (*2)
OperatingTemperature
Electrode -20 to 60℃ (without dew)
Housing -10 to 55℃ (without dew)
Operating Pressure 1 MPa Max. 3 MPa Max.
Operating Humidity 85% RH Max.
Connecting Converter KRA, KRA-R
*1: The other mounting is optionally available.
*2: The other material is optionally available.
*The specifications are subject to change without notice.
21
KRS SeriesCapacitance Level Sensor Separation Type
Model KRS-4N KRS-4F KRS-5F KRS-6F
Dimensions
Description Pressure and Heat Proof Flat Type Wire Type
Mounting R1 (*1) JIS5K50A FF (*1) JIS5K65A FF (*1) JIS5K50A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (1000mm Max.) 65mm (1000mm Max.) 100mm (1000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode 304SS (*2)
Insulator PTFE (*2) PE (*2)
O-ring FPM/FKM (*2)
OperatingTemperature
Electrode -20 to 180℃ (without dew) -20 to 60℃ (without dew)
Housing -10 to 55℃ (without dew)
Operating Pressure 3 MPa Max. 1 MPa Max. 500 kPa Max.
Operating Humidity 85% RH Max.
Connecting Converter KRA, KRA-R
*1: The other mounting is optionally available.
*2: The other material is optionally available.
*The specifications are subject to change without notice.
22
KRS SeriesCapacitance Level Sensor (Phase Detection Principle) Separation Type
Model KRS-7F KRS-8F KRS-25F
Dimensions
Description Pipe Type Adhesion Proof High Sensitivity
Mounting JIS5K50A FF (*1)
Cable Entry G1/2 Equivalent
ProtectionElectrode IP68
Housing IP65
Length of Electrode 250mm (2000mm Max.) 250mm (4000mm Max.) 250mm (2000mm Max.)
Material
Housing ADC12 (Acrylic painting)
Electrode C3604BD 304SS (*2)
Insulator FEP (Pipe) FRP PE (*2)
O-ring FPM/FKM (*2)
OperatingTemperature
Electrode -20 to 60℃ (without dew)
Housing -25 to 65℃ (without dew)
Operating Pressure 100 kPa Max. 1 MPa Max.
Operating Humidity 85% RH Max.
Connecting Converter KRA, KRA-R
*1: The other mounting is optionally available.
*2: The other material is optionally available.
*The specifications are subject to change without notice.
23
KRA SeriesCapacitance Level Sensor Separation Type
Model KRA KRA-R
Dimensions
Material ADC 12 (Silver Hammerton coating) Body: SPCC, Cover: Acrylic
Protection IP54 IP10
Cable Entry 3 ×G1/2 φ 10 hole, φ16 hole
Mounting 4×φ 6.5 holes (Pitch 136×100) 2×φ 4.5 holes (Pitch 180)
Relay Output1 SPDT, 250V 3A AC, 30V 3A DC (Resistive)
C-NO: Normally open contactC-NC: Normally close contact
Operating Temperature -10 to 55℃ (without dew)
Power Supply 100V or 200V AC ±10% 50/60Hz
Power Consumption Approx. 4VA
*The specifications are subject to change without notice.
KSVCapacitance Level Sensor
Products Overview
Features
Relation between dielectric constant and length of electrode
1
2
KSV-9N SeriesCapacitance Level Sensor
Products Overview
Features
Compact and light weight, but integral construction
NPN open collector can be directly connected to the relay output
Operational indicator is provided
Easy to adjust sensitivity by adjusting knob
PR2100-7U is a Power Relay Unit for KSV
2-SPST relay output and self
Relation between dielectric constant and length of electrode
The length of electrode
1) Check the dielectric constant of medium by our catalog or any other document.
2) See the
3) Select correct Model number which should be matched with the length of electrode.
The length of Earth rod
1) Select correct Model number which 20mm of earth rod can be
9N SeriesCapacitance Level Sensor
Products Overview
Compact and light weight, but integral construction
NPN open collector can be directly connected to the relay output
Operational indicator is provided
Easy to adjust sensitivity by adjusting knob
7U is a Power Relay Unit for KSV
SPST relay output and self
Relation between dielectric constant and length of electrode
The length of electrode
Check the dielectric constant of medium by our catalog or any other document.
See the below and determine the length of electrode compared with dielectric constant of medium
Select correct Model number which should be matched with the length of electrode.
The length of Earth rod
Select correct Model number which 20mm of earth rod can be
9N SeriesCapacitance Level Sensor Compact Type
Compact and light weight, but integral construction
NPN open collector can be directly connected to the relay output
Operational indicator is provided
Easy to adjust sensitivity by adjusting knob
7U is a Power Relay Unit for KSV
SPST relay output and self-holding control are available by using PR2100
Relation between dielectric constant and length of electrode
The length of electrode
Check the dielectric constant of medium by our catalog or any other document.
below and determine the length of electrode compared with dielectric constant of medium
Select correct Model number which should be matched with the length of electrode.
The length of Earth rod
Select correct Model number which 20mm of earth rod can be
Compact Type
KSVsuitable for the buildproduction devices.application of both liquids and solids.plastic covered probe is available for conductive mediumsuch as aqueous solution, grain and sugar containedmoisture, metal powder, and so
Compact and light weight, but integral construction
NPN open collector can be directly connected to the relay output
Operational indicator is provided
Easy to adjust sensitivity by adjusting knob
7U is a Power Relay Unit for KSV-9N ser
holding control are available by using PR2100
Relation between dielectric constant and length of electrode
Check the dielectric constant of medium by our catalog or any other document.
below and determine the length of electrode compared with dielectric constant of medium
Select correct Model number which should be matched with the length of electrode.
Select correct Model number which 20mm of earth rod can be
24
Compact Type
KSV-9N series are designed to use in small tank andsuitable for the buildproduction devices.application of both liquids and solids.plastic covered probe is available for conductive mediumsuch as aqueous solution, grain and sugar containedmoisture, metal powder, and so
Compact and light weight, but integral construction
NPN open collector can be directly connected to the relay output
Easy to adjust sensitivity by adjusting knob
9N series
holding control are available by using PR2100
Relation between dielectric constant and length of electrode
Check the dielectric constant of medium by our catalog or any other document.
below and determine the length of electrode compared with dielectric constant of medium
Select correct Model number which should be matched with the length of electrode.
Select correct Model number which 20mm of earth rod can be
9N series are designed to use in small tank andsuitable for the build-in level sensor of smallproduction devices. This sensor can detect generalapplication of both liquids and solids.plastic covered probe is available for conductive mediumsuch as aqueous solution, grain and sugar containedmoisture, metal powder, and so
NPN open collector can be directly connected to the relay output
holding control are available by using PR2100
Relation between dielectric constant and length of electrode
Check the dielectric constant of medium by our catalog or any other document.
below and determine the length of electrode compared with dielectric constant of medium
Select correct Model number which should be matched with the length of electrode.
Select correct Model number which 20mm of earth rod can be
9N series are designed to use in small tank andin level sensor of smallThis sensor can detect general
application of both liquids and solids.plastic covered probe is available for conductive mediumsuch as aqueous solution, grain and sugar containedmoisture, metal powder, and so on.
NPN open collector can be directly connected to the relay output
holding control are available by using PR2100-7U
Relation between dielectric constant and length of electrode
Check the dielectric constant of medium by our catalog or any other document.
below and determine the length of electrode compared with dielectric constant of medium
Select correct Model number which should be matched with the length of electrode.
Select correct Model number which 20mm of earth rod can be installed inside of tank.
9N series are designed to use in small tank andin level sensor of small or massThis sensor can detect general
application of both liquids and solids. The option ofplastic covered probe is available for conductive mediumsuch as aqueous solution, grain and sugar contained
on.
7U
Check the dielectric constant of medium by our catalog or any other document.
below and determine the length of electrode compared with dielectric constant of medium
Select correct Model number which should be matched with the length of electrode.
installed inside of tank.
9N series are designed to use in small tank andor mass
This sensor can detect generalThe option of
plastic covered probe is available for conductive mediumsuch as aqueous solution, grain and sugar contained
below and determine the length of electrode compared with dielectric constant of medium
installed inside of tank.
plastic covered probe is available for conductive medium
below and determine the length of electrode compared with dielectric constant of medium.
KSVCapacitance Level Sensor
Model
Dimensions
Mounting
Protection
Length of Electrode
Material
Sensitivity
Stable Sensitivity
Output
Oscillation Frequency
Power Supply
Current Consumption
Operating Temperature
Operating Pressure
Operating Humidity
Description
Standard
Low Sensitivity
KSV-9N SeriesCapacitance Level Sensor
Model
Dimensions
Mounting
Protection Electrode
Length of Electrode
Material
Electrode
Insulator
Earth Rod
Sensitivity
Stable Sensitivity
Output
Oscillation Frequency
Power Supply
Current Consumption
Operating Temperature
Operating Pressure
Operating Humidity
Description
Standard
Low Sensitivity
9N SeriesCapacitance Level Sensor
Electrode
Length of Electrode
Electrode
Insulator
Earth Rod
Stable Sensitivity
Oscillation Frequency
Power Supply
Current Consumption
Operating Temperature
Operating Pressure
Operating Humidity
Description of Model Number
Electrode
Length of L2
Length of L1
150mm
300mm
600mm
Low Sensitivity
150mm
300mm
600mm
9N SeriesCapacitance Level Sensor Compact Type
of Model Number
Electrode
Length of L2
Length of L1 Model Number
150mm
300mm
600mm
150mm
300mm
600mm
Compact Type
KSV-9N-□□□
0 to 20pF for standard, 0 to 100pF for low sensitivity
of Model Number
Stainless Steel Probe Type
20mm
Model Number
KSV-9N-111
KSV-9N-121
KSV-9N-141
KSV-9N-111
KSV-9N-121
KSV-9N-141
25
Compact Type
□□□
150mm,
0 to 20pF for standard, 0 to 100pF for low sensitivityLess than 1.5pF for standard
Less than 5.0pF for low sensitivity
NPN open
Approx. 600k Hz
24V DC ±10%
Approx. 21mA Max.
-10 to 70
1.57 MPa Max. for electrode
35% to 95% RH
Stainless Steel Probe Type
100mm
Model Number Model Number
111 KSV
121 KSV
141 KSV
111 KSV
121 KSV
141 KSV
R1
IP67
150mm, 300mm, 600mm
304SS
Polyacetal
304SS
0 to 20pF for standard, 0 to 100pF for low sensitivityLess than 1.5pF for standard
Less than 5.0pF for low sensitivity
NPN open collector
Approx. 600k Hz
24V DC ±10%
Approx. 21mA Max.
10 to 70℃ (without dew)
MPa Max. for electrode
35% to 95% RH
Stainless Steel Probe Type
100mm
Model Number
KSV-9N-113
KSV-9N-123
KSV-9N-143
KSV-9N-113
KSV-9N-123
KSV-9N-143
KSV
300mm, 600mm
Polyacetal
0 to 20pF for standard, 0 to 100pF for low sensitivityLess than 1.5pF for standard
Less than 5.0pF for low sensitivity
collector
Approx. 600k Hz
24V DC ±10%
Approx. 21mA Max.
(without dew)
MPa Max. for electrode
35% to 95% RH
Plastic Covered Prove Type
20mm
Model Number
KSV-9N-111M
KSV-9N-121M
KSV-9N-111M
KSV-9N-121M
KSV-9N-□□□M
0 to 20pF for standard, 0 to 100pF for low sensitivity
Less than 5.0pF for low sensitivity
Plastic Covered Prove Type
20mm
Model Number Model Number
111M KSV
121M KSV
111M KSV
121M KSV
□□□M
Plastic Covered Prove Type
100mm
Model Number
KSV-9N-113M
KSV-9N-123M
KSV-9N-113M
KSV-9N-123M
Model Number
113M
123M
113M
123M
26
PR2100-7UController
Model PR2100-7U
Dimensions
Power Supply 100/110/200/220V AC ± 10%
Power Consumption Approx. 4VA Max.
Relay Contact 2 SPST, 200V 2A AC, 12V 10mA DC (Resistive)
Output Power* 24V DC 35mA
Operating Temperature -10 to 40℃ (without dew)
Operating Humidity 35% to 85% RH
Indication Red LED for relay status
Mounting 11-pin base, plug-in type (Option)
*Output power is supplied to the sensor.
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