Selection Guide. Sensitivity. High. Low. Resistance. Soy sauce Alkali Caustic soda Hydrochloric acid Sulphuric acid

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1 Capaci itance Level Sensor, Model CG, K series Selection Guide High Sensitivity Low Ω Resistance 2Ω Plastic Oil Butter Alumina Rice Oats Sesame Silicon oil Chocolate Oil paint Freon Lime hydrate Fly ash Sand Starch Syrup Alcohol Beer Culture fluid Whip cream Water ink Urethane Blast sand Ammonia Soy Milk Water paint Night soil Facial cream Clay Tap water Milk Slurry Pulp Water wax Mixed concrete Soy sauce Alkali Caustic soda Hydrochloric acid Sulphuric acid Milk lime Electrolyte Detergent Shampoo Rinse Bean paste Minced fish Carbon Sludge Dehydrated cake Drainage of animal Sauce Model CG KRV / KRS KSV KSV-9N & PR2100-7U 1

2 Capacitance Level Sensor, Model CG, K series Features of Model CG Easy adjustment by parameter Adjustment can be easily done by using 4 push button switches to select parameter and enter setting value. The setting error by personal difference can be avoided. Moreover, tester and tool are not required. Various functions by microprocessor Sensitivity adjustment, Delay timer, Switchover of relay output, Setting function of detection level, Self-diagnostic function are all available. Operation LCD display Can be check all operative condition on LCD by 6 digit display, status display, 8 segment bar graph display. Improvement of function for adhesion The 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 of changes in capacitance value to changes in frequency. Outstanding reliability Outstanding reliability with dielectric constant as low as 1.2. Features of KRV Series Outstanding reliability Outstanding reliability with dielectric constant as low as 1.1. Easy to change the sensitivity The sensitivity can be easily changed by 5 selection sensitivity switches. Operation LED display Operation 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 sensitivity The sensitivity can be changed by high and low sensitivity switch and sensitivity volume. 2

3 Capacitance Level Sensor, Model CG, K series Comparative Table Model CG KRV Series KSV Series Dielectric constant N/A Sensitivity Setting Parameter 5 selection switch High/Low switch Sensitivity More than 1pF A 0.5pF H 5pF B1 3pF B2 5pF C 200pF D 4000pF L 90pF 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 3

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 at beer factory. It is difficult to detect bubble by capacitance sensor, because the capacity of bubble is almost same with air. However, our capacitance sensor is available with detection 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. 4

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 aluminum sulfate, clay, talc, and calcium carbonate are pasted on the paper to prevent the ink from blotting, and to smooth the paper. Pigment (Kaolinite) is pasted on color printing papers to prevent the ink from blotting. Model CG and KSV series 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 316 Stainless 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 of moisture and build- up. On the other hand, dry cement fed by a pneumatic conveyor holds high static electricity. Model CG and K series, however, discharge it, as the sensor has an earth terminal. 5

6 Capacitance Level Sensor, Model CG, K series Application Guide Pharmaceutical (Solid Tablet) Lubricants are used to add into mixed powders to avoid it from sticking to the hopper or to the tablet machine. Model CG and K series show stable operation although lubricants are fluidized. The pneumatic conveyor The pneumatic conveyor transmits plastic resins or powders with pneumatic pressure. Model CG and K series are suitable for high level detection in this pressurized hopper to prevent powders from sticking to the probe. It withstands static electricity by discharging to the earth. Interface detection Model CG and KRV series are ideal for the interface detection of two immiscible liquids. Interface detection between oil and water is typical application. The output relay is energized by water and de-energized by oil. 6

7 CG Series Capacitance Level Sensor (Phase Detection Principle) Products Overview We, NOHKEN INC., have plenty of experience with capacitance level sensor for more than 30 years, and we consolidate all experience into CG series. CG series employ phase detection principle which the changing of resonance frequency is processed by microprocessor (digital circuit) and the changes in capacitance value is detected by changes 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 around the 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. The frequency range can be divided into 8 segments (between zero and span), and the set and reset points can be set on desired segments, thus enabling high limit, low limit and hysteresis settings. With material around the sensor ZERO Set SPAN Without material around the sensor * Divide the range into 8 segments, and set ON and OFF points. Hysteresis setting is also available. Electrode rod Earth rod Insulator Electrode 7

8 Model CG Capacitance Level Sensor (Phase Detection Principle) Integral Type, CE Marking Model CG-2NK CG-2FK CG-3NK CG-3FK Description Standard Pressure Proof Mounting R3/4 (*1) JIS5K25A FF (*1) R1 (*1) JIS5K25A FF (*1) Cable Entry G1/2 Equivalent Protection Electrode IP68 IP65 Length of Electrode 250mm (4000mm Max.) 250mm (1000mm Max.) Material ADC12 (Acrylic painting) Electrode 304SS (*2) Insulator PTFE (*2) O-ring FPM/FKM (*2) Dielectric constant 1.2 Min. Sensitivity Capacitance between electrode 1.0pF Min. (But resistance between electrode 10kΩ Min. at L=250mm) 1 SPDT, 250V 3A AC, 30V 3A DC (Resistive) Relay Output C-NO: Normally open contact C-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 Operating Electrode -20 to 60 (without dew) Temperature -25 to 65 (without dew) Operating Pressure 1 MPa Max. 3 MPa Max. *1: The other mounting is optionally available. *2: The other material is optionally available. 85% RH Max. 8

9 Model CG Capacitance Level Sensor (Phase Detection Principle) Integral Type, CE Marking Model CG-4NK CG-4FK CG-5FK CG-6FK Description Pressure and Heat Proof Flat Type Wire Type Mounting R1 (*1) JIS5K50A FF (*1) JIS5K65A FF (*1) JIS5K50A FF (*1) Cable Entry Protection Electrode G1/2 Equivalent Length of Electrode 250mm (1000mm Max.) 65mm (1000mm Max.) 100mm (1000mm Max.) Material IP68 IP65 ADC12 (Acrylic painting) Electrode 304SS (*2) Insulator PTFE (*2) PE (*2) O-ring FPM/FKM (*2) Dielectric constant 1.2 Min. Sensitivity Capacitance between electrode 1.0pF Min. (But resistance between electrode 10kΩ Min. at L=250mm) 1 SPDT, 250V 3A AC, 30V 3A DC (Resistive) Relay Output C-NO: Normally open contact C-NC: Normally close contact Detection Time Delay Programmable between 0.0 to 25.5 seconds Power Supply Power Consumption Operating Temperature 100 to 240V AC ±10%, 50/60Hz (24V DC in option) Approx. 6VA Electrode -20 to 180 (without dew) -20 to 60 (without dew) -25 to 65 (without dew) Operating Pressure 3 MPa Max. 1 MPa Max. 500 kpa Max. *1: The other mounting is optionally available. *2: The other material is optionally available. 85% RH Max. 9

10 Model CG Capacitance Level Sensor (Phase Detection Principle) Integral Type, CE Marking Model CG-7FK CG-8FK CG-9FK CG-25FK Description Pipe Type Adhesion Proof Special Type High Sensitivity Mounting JIS5K50A FF (*1) Cable Entry Protection Electrode G1/2 Equivalent Length of Electrode 250mm (2000mm Max.) 250mm (4000mm Max.) 250mm (2000mm Max.) ADC12 (Acrylic painting) Material IP68 IP65 Electrode C3604BD 304SS (*2) Insulator FEP (Pipe) FRP PTFE (*2) PE (*2) O-ring FPM/FKM (*2) Dielectric constant 1.2 Min. Sensitivity Capacitance between electrode 1.0pF Min. (But resistance between electrode 10kΩ Min. at L=250mm) 1 SPDT, 250V 3A AC, 30V 3A DC (Resistive) Relay Output C-NO: Normally open contact C-NC: Normally close contact Detection Time Delay Programmable between 0.0 to 25.5 seconds Power Supply Power Consumption Operating Temperature Electrode 100 to 240V AC ±10%, 50/60Hz (24V DC in option) Approx. 6VA -20 to 60 (without dew) -25 to 65 (without dew) Operating Pressure 100 kpa Max. 1 MPa Max. *1: The other mounting is optionally available. *2: The other material is optionally available. 85% RH Max. 10

11 Model CGS, CG65 Capacitance Level Sensor (Phase Detection Principle) Separate Type Model Standard CGS-2N CGS-2F CGS-3N CGS-3F Intrinsically Safe CG65-2N CG65-2F CG65-3N CG65-3F Description Standard Pressure Proof Mounting R3/4 (*1) JIS5K25A FF (*1) R1 (*1) JIS5K25A FF (*1) Cable Entry Protection Electrode G1/2 Equivalent Length of Electrode 250mm (4000mm Max.) 250mm (1000mm Max.) Material Sensitivity Detection Time Delay Operating Temperature IP68 IP65 ADC12 (Acrylic painting) Electrode 304SS (*2) Insulator PTFE (*2) O-ring FPM/FKM (*2) Electrode Dielectric constant 1.2 Min. Capacitance between electrode 1.0pF Min. (But resistance between electrode 10kΩ Min. at L=250mm) Programmable between 0.0 to 25.5 seconds -20 to 60 (without dew) for standard -20 to 50 (without dew) for Intrinsically Safe -25 to 65 (without dew) for standard -20 to 50 (without dew) for Intrinsically Safe Operating Pressure 1 MPa Max. 3 MPa Max. Connecting Converter *1: The other mounting is optionally available. *2: The other material is optionally available. 85% RH Max. CGS1000 series for standard, CGS6000 series for Intrinsically Safe 11

12 Model CGS, CG65 Capacitance Level Sensor (Phase Detection Principle) Separation Type Model Standard CGS-4N CGS-4F CGS-5F CGS-6F Intrinsically Safe CG65-4N CG65-4F CG65-5F CG65-6F Description Pressure and Heat Proof Flat Type Wire Type Mounting R1 (*1) JIS5K50A FF (*1) JIS5K65A FF (*1) JIS5K50A FF (*1) Cable Entry Protection Electrode G1/2 Equivalent Length of Electrode 250mm (1000mm Max.) 65mm (1000mm Max.) 100mm (1000mm Max.) Material Sensitivity Detection Time Delay Operating Temperature IP68 IP65 ADC12 (Acrylic painting) Electrode 304SS (*2) Insulator PTFE (*2) PE (*2) O-ring FPM/FKM (*2) Electrode Dielectric constant 1.2 Min. Capacitance between electrode 1.0pF Min. (But resistance between electrode 10kΩ Min. at L=250mm) Programmable between 0.0 to 25.5 seconds -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 -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. Connecting Converter *1: The other mounting is optionally available. *2: The other material is optionally available. 85% RH Max. CGS1000 series for standard, CGS6000 series for Intrinsically Safe 12

13 Model CGS, CG65 Capacitance Level Sensor (Phase Detection Principle) Separation Type Model Standard CGS-7F CGS-8F CGS-9F CGS-25F Intrinsically Safe CG65-7F CG65-8F CG65-9F CG65-25F Description Pipe Type Adhesion Proof Special Type High Sensitivity Mounting JIS5K50A FF (*1) Cable Entry Protection Electrode G1/2 Equivalent Length of Electrode 250mm (2000mm Max.) 250mm (4000mm Max.) 250mm (2000mm Max.) Material Sensitivity Detection Time Delay Operating Temperature IP68 IP65 ADC12 (Acrylic painting) Electrode C3604BD 304SS (*2) Insulator FEP (Pipe) FRP PTFE (*2) PE (*2) O-ring FPM/FKM (*2) Electrode Dielectric constant 1.2 Min. Capacitance between electrode 1.0pF Min. (But resistance between electrode 10kΩ Min. at L=250mm) Programmable between 0.0 to 25.5 seconds -20 to 60 (without dew) for standard -20 to 50 (without dew) for Intrinsically Safe -25 to 65 (without dew) for standard -20 to 50 (without dew) for Intrinsically Safe Operating Pressure 100 kpa Max. 1 MPa Max. Connecting Converter *1: The other mounting is optionally available. *2: The other material is optionally available. 85% RH Max. CGS1000 series for standard, CGS6000 series for Intrinsically Safe 13

14 Model CGS, CG65 Capacitance Level Sensor (Phase Detection Principle) Separation Type Model Standard CGS1000 CGS1010 CGS1100 CGS1110 Intrinsically Safe CGS6000 CGS6010 CGS6200 CGS6210 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 Operating Temperature 1 SPDT, 250V 3A AC, 30V 3A DC (Resistive) C-NO: Normally open contact C-NC: Normally close contact -20 to 60 (without dew) Power Supply V AC ±10%, 50/60Hz 24V DC V AC ±10%, 50/60Hz 24V DC Power Consumption Connecting Sensor Approx. 6VA 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. 14

15 KR Series Capacitance Level Sensor (Parallel Resonance Circuit) Products Overview The KR series of capacitance sensors are designed for point level detection of liquids, solids, powder, or interface between two immiscible liquids. The radio frequency sensors are typically used to detect liquids, but have a difficult time with solids or powder materials. The KR series overcome this limitation by having a parallel resonance circuit on its oscillator and five switch selected sensitivity ranges. The KR series easily detect solids and powder materials such as plastic powder and pellet, fly ash, carbon black, and similar substances. The KR series reliably detect the interface between two immiscible liquids, oil and water as an example. 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. When the electrode is in the medium, the synchronization between the oscillation circuit and detection circuit breaks with the capacitance of the medium being taken in. This difference is then converted into the relay 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 your specified medium when order. 15

16 KS Series Capacitance Level Sensor (Series Resonance Circuit) Products Overview KS series of capacitance sensors are made specifically for point level detection of conductive medium. Applications include water, chemical solutions, acid based slurries, conductive granules, and sticky liquids. Buildup is one of most common problems for capacitance sensors. The radio frequency sensor solves this problem by using a guard probes. But complicated probe construction tends to make probe easily broken. KS series overcome this limitation by using the series resonance circuit and single electrode. This circuit corrects for conductive buildup by measuring its resistance. The single electrode can be mounted in vertically and position and is available with 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, the oscillation is stopped. When it is in medium, the oscillation is restored by measuring capacitance of medium and the relay is energized. Sensitivity Settings for Applications H Range: more than 5pF, R=more than 1.5kΩ Alcohol, Syrup, Water paint, Tap water L Range: more than 90pF, R=more than 800Ω Slurry, 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 and the relay energizes. In this way, by taking resistance of conductive buildup and canceling capacitance of that, KSV prevents false relay trips. 16

17 KR/KS Series Capacitance Level Sensor Integral Type Model of Electrode 2NH 2FH 3NH 3FH 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 Protection Electrode IP68 IP65 Length of Electrode 250mm (4000mm Max.) 250mm (1000mm Max.) Material Operating Indication Relay Output Detection Time Delay Power KRV Supply KSV Power KRV Consumption KSV Operating Electrode Temperature ADC12 (Acrylic painting) Electrode 304SS (*2) Insulator PTFE (*2) O-ring FPM/FKM (*2) LED lighting (Red) 1 SPDT, 250V 3A AC, 30V 3A DC (Resistive) C-A: Normally open contact C-B: Normally close contact Adjustable between 0.5 to 10 seconds 100 to 120 / 200 to 240V AC ±10%, 50/60Hz (24V DC in option) 100V or 200V AC ±10%, 50/60Hz (24V DC in option) Approx. 2.5VA Approx. 4VA -20 to 60 (without dew) -10 to 65 (without dew) Operating Pressure 1 MPa Max. 3 MPa Max. 85% RH Max. *1: The other mounting is optionally available. *2: The other material is optionally available. 17

18 KR/KS Series Capacitance Level Sensor Integral Type Model of Electrode 4NH 4FH 5FH 6FH 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 Protection Electrode IP68 IP65 Length of Electrode 250mm (1000mm Max.) 65mm (1000mm Max.) 100mm (1000mm Max.) ADC12 (Acrylic painting) Material Electrode 304SS (*2) Insulator PTFE (*2) PE (*2) O-ring FPM/FKM (*2) Operating indication LED lighting (Red) 1 SPDT, 250V 3A AC, 30V 3A DC (Resistive) Relay Output C-A: Normally open contact C-B: Normally close contact Detection Time Delay Adjustable between 0.5 to 10 seconds Power KRV 100 to 120 / 200 to 240V AC ±10%, 50/60Hz (24V DC in option) Supply KSV 100V or 200V AC ±10%, 50/60Hz (24V DC in option) Power KRV Approx. 2.5VA Consumption KSV Approx. 4VA Operating Electrode -20 to 180 (without dew) -20 to 60 (without dew) Temperature -10 to 55 (without dew) Operating Pressure 3 MPa Max. 1 MPa Max. 500 kpa Max. 85% RH Max. *1: The other mounting is optionally available. *2: The other material is optionally available. 18

19 KR/KS Series Capacitance Level Sensor Integral Type Model of Electrode 7FH 8FH 9FH 25FH Description Pipe Type Adhesion Proof Special Type High Sensitivity Model of Amplifier 19 KSV, KRV Mounting JIS5K50A FF (*1) Cable Entry Protection Electrode G1/2 Equivalent Length of Electrode 250mm (2000mm Max.) 250mm (4000mm Max.) 250mm (2000mm Max.) Material Operating Indication Relay Output Detection Time Delay Power Supply Power Consumption Operating Temperature IP68 IP65 ADC12 (Acrylic painting) Electrode C3604BD 304SS (*2) Insulator FEP (Pipe) FRP PTFE (*2) PE (*2) O-ring FPM/FKM (*2) KRV KSV KRV KSV Electrode LED lighting (Red) 1 SPDT, 250V 3A AC, 30V 3A DC (Resistive) C-A: Normally open contact C-B: Normally close contact Adjustable between 0.5 to 10 seconds 100 to 120 / 200 to 240V AC ±10%, 50/60Hz (24V DC in option) 100V or 200V AC ±10%, 50/60Hz (24V DC in option) Approx. 2.5VA Approx. 4VA -20 to 60 (without dew) -10 to 55 (without dew) Operating Pressure 100 kpa Max. 1 MPa Max. *1: The other mounting is optionally available. *2: The other material is optionally available. 85% RH Max.

20 KRS Series Capacitance Level Sensor Separation Type Model KRS-2N KRS-2F KRS-3N KRS-3F Description Standard Pressure Proof Mounting R3/4 (*1) JIS5K25A FF (*1) R1 (*1) JIS5K25A FF (*1) Cable Entry Protection Electrode G1/2 Equivalent Length of Electrode 250mm (4000mm Max.) 250mm (1000mm Max.) ADC12 (Acrylic painting) Material Operating Temperature IP68 IP65 Electrode 304SS (*2) Insulator PTFE (*2) O-ring FPM/FKM (*2) Electrode -20 to 60 (without dew) -10 to 55 (without dew) Operating Pressure 1 MPa Max. 3 MPa Max. Connecting Converter *1: The other mounting is optionally available. *2: The other material is optionally available. 85% RH Max. KRA, KRA-R 20

21 KRS Series Capacitance Level Sensor Separation Type Model KRS-4N KRS-4F KRS-5F KRS-6F Description Pressure and Heat Proof Flat Type Wire Type Mounting R1 (*1) JIS5K50A FF (*1) JIS5K65A FF (*1) JIS5K50A FF (*1) Cable Entry Protection Electrode G1/2 Equivalent Length of Electrode 250mm (1000mm Max.) 65mm (1000mm Max.) 100mm (1000mm Max.) Material IP68 IP65 ADC12 (Acrylic painting) Electrode 304SS (*2) Insulator PTFE (*2) PE (*2) O-ring FPM/FKM (*2) Operating Electrode -20 to 180 (without dew) -20 to 60 (without dew) Temperature -10 to 55 (without dew) Operating Pressure 3 MPa Max. 1 MPa Max. 500 kpa Max. Connecting Converter *1: The other mounting is optionally available. *2: The other material is optionally available. 85% RH Max. KRA, KRA-R 21

22 KRS Series Capacitance Level Sensor (Phase Detection Principle) Separation Type Model KRS-7F KRS-8F KRS-25F Description Pipe Type Adhesion Proof High Sensitivity Mounting JIS5K50A FF (*1) Cable Entry Protection G1/2 Equivalent Electrode IP68 Length of Electrode 250mm (2000mm Max.) 250mm (4000mm Max.) 250mm (2000mm Max.) Material Operating Temperature IP65 ADC12 (Acrylic painting) Electrode C3604BD 304SS (*2) Insulator FEP (Pipe) FRP PE (*2) O-ring FPM/FKM (*2) Electrode -20 to 60 (without dew) -25 to 65 (without dew) Operating Pressure 100 kpa Max. 1 MPa Max. Connecting Converter *1: The other mounting is optionally available. *2: The other material is optionally available. 85% RH Max. KRA, KRA-R 22

23 KRA Series Capacitance Level Sensor Separation Type Model KRA KRA-R 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 ) 2 φ 4.5 holes (Pitch 180) Relay Output Operating Temperature Power Supply Power Consumption 1 SPDT, 250V 3A AC, 30V 3A DC (Resistive) C-NO: Normally open contact C-NC: Normally close contact -10 to 55 (without dew) 100V or 200V AC ±10% 50/60Hz Approx. 4VA 23

24 KSV-9N Series Capacitan nce Level Sensor Compact Type Products Overview KSV-9N series are designed to use in small tank and suitable for the build-in level sensor of small or mass production devices. This sensor can detect general application of both liquids and solids. The option of plastic covered probe is available for conductive mediumm such as aqueous solution, grain and sugar contained moisture, metal powder, and so on. Features Compact and light weight, but integral construction NPN open collector can be directly connected to the relay outputt Operational indicator is provided Easy to adjust sensitivity by adjusting knob PR2100-7U is a Power Relay Unit for KSV-9N series 2-SPST relay output and self-holding control are available by using PR2100-7U Relation between dielectric constant and length of electrode 1 The length of electrode 1) Check the dielectric constant of medium by our catalog or any other document. 2) See the below and determine the length of electrodee compared with dielectric constant of medium. 3) Select correct Model number which should be matched with the length of electrode. 2 The length of Earth rod 1) Select correct Model number which 20mm of earth rod can be installed inside of tank. 24

25 KSV-9N Series Capacitan nce Level Sensor Compact Type Model KSV-9N- KSV-9N- M Mounting Protection Electrode Length of Electrode Electrode Material Insulator Earth Rod Sensitivity Stable Sensitivity Output Oscillation Frequency Power Supply Current Consumption Operating Temperature Operating Pressure R1 IP67 150mm, 300mm, 600mm 304SS Polyacetal 304SS 0 to 20pF for standard, 0 to 100pF for low sensitivity Less than 1.5pF for standard Less than 5.0pF for low sensitivity NPNN open collector Approx. 600k Hz 24V DC ±10% Approx. 21mA Max. -10 to 70 7 (without dew) 1.57 MPa Max. for electrode 35% to 95% RH Descriptio on of Model Number Standard Low Sensitivity Electrode Length of L2 Length of L1 150mm 300mm 600mm 150mm 300mm 600mm Stainlesss Steel Probe Type 20mm 100mm Model Number Model Number KSV-9N-111 KSV-9N-113 KSV-9N-121 KSV-9N-123 KSV-9N-141 KSV-9N-143 KSV-9N-111 KSV-9N-113 KSV-9N-121 KSV-9N-123 KSV-9N-141 KSV-9N-143 Plastic Covered Prove Type 20mmm 100mm Model Number Model Number KSV-9N-111M KSV-9N-113M KSV-9N-121M KSV-9N-123M KSV-9N-111M KSV-9N-113M KSV-9N-121M KSV-9N-123M 25

26 PR2100-7U Controller Model PR2100-7U 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) 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. 26