RKI Instruments.png

Direct Connect Sensors

Item
Description
61-0140RK
Sensor, LEL combustible (catalytic), direct connection (no transmitter, no j-box), UL version
61-0140RK-05
Sensor, LEL combustible (catalytic), direct connection (no transmitter, no j-box), cCSAus version
61-0190RK-CH4
Sensor, Methane (CH4) 0 - 100% LEL, IR, explosion proof direct connection, 3/4” NPT nipple (no transmitter, no j-box), cULus version
61-0190RK-HC
Sensor, Methane (CH4) 0 - 100% volume, IR, explosion proof direct connection, 3/4” NPT nipple (no transmitter, no j-box), cULus version
61-0191RK-02
Sensor, Carbon Dioxide (CO2) 0 - 5,000 ppm, IR, explosion proof direct connection (no transmitter, no j-box), cULus version
61-0191RK-03
Sensor, Carbon Dioxide (CO2) 0 - 5%, IR, explosion proof direct connection (no transmitter, no j-box), cULus version
61-0191RK-05
Sensor, Carbon Dioxide (CO2) 0 - 50%, IR, explosion proof direct connection (no transmitter, no j-box), cULus version
61-0191RK-10
Sensor, Carbon Dioxide (CO2) 0 - 100%, IR, explosion proof direct connection (no transmitter, no j-box), cULus version
65-2425
Sensor, Hydrogen Cyanide (HCN), direct connection (no transmitter, no j-box), Available Q4 2022
65-2428
Sensor, Hydrogen Sulfide (H2S), direct connection (no transmitter, no j-box)
65-2438
Sensor, Carbon Monoxide (CO), direct connection (no transmitter, no j-box), CSA version
65-2514RK
Sensor, Oxygen (O2), capillary type, explosion proof, (no transmitter, no j-box), CSA version
NC-6205-01
Sensor, LEL Hydrogen (H2) specific, 1/2 NPT, with guard and silicone resistance, UL version, (no transmitter, no j-box)
NC-6205-05
Sensor, LEL Hydrogen (H2) specific, explosion proof direct connection, with silicone resistance, cCSAus version, (no transmitter, no j-box)

Direct Connect Sensors with J-box

Item
Description
61-1000RK
Sensor, LEL combustible (catalytic) with explosion proof j-box (no transmitter), (specify calibration), UL version
61-1000RK-05
Sensor, LEL combustible (catalytic) with explosion proof j-box (no transmitter), (specify calibration), CSA version
61-1001RK
Sensor, LEL Hydrogen (H2) specific with explosion proof j-box (no transmitter), UL version
61-1001RK-05
Sensor, LEL Hydrogen (H2) specific with explosion proof j-box (no transmitter), CSA version
61-1003RK-CH4
Sensor, IR, Methane (CH4) 0 - 100% LEL, explosion proof with j-box, UL version
61-1003RK-HC
Sensor, IR, Hydrocarbons (HC) 0 - 100% LEL, isobutane standard calibration, explosion proof with j-box, UL version
61-1004RK-02
Sensor, IR, Carbon Dioxide (CO2) 0 - 5,000 ppm, explosion proof with j-box, UL version
61-1004RK-03
Sensor, IR, Carbon Dioxide (CO2) 0 - 5%, explosion proof with j-box, UL version
61-1004RK-05
Sensor, IR, Carbon Dioxide (CO2) 0 - 50%, explosion proof with j-box, UL version
61-1004RK-10
Sensor, IR, Carbon Dioxide (CO2) 0 - 100%, explosion proof with j-box, UL version
61-1006RK-CH4
Sensor, IR, Methane (CH4) 0 - 100% VOL, with j-box, UL version
65-2427RK-05
Sensor, Hydrogen Sulfide (H2S) with j-box, CSA version
65-2429
Sensor, Hydrogen Cyanide (HCN) with j-box, Available Q4 2022
65-2437RK-05
Sensor, Carbon Monoxide (CO) with j-box, CSA version
65-2515RK
Sensor, Oxygen (O2), capillary type, explosion proof with conduit mounting and j-box (no transmitter), CSA version

Direct Connect Replacement Sensors for Explosion Proof

Item
Description
61-0140RK
Sensor, LEL combustible (catalytic), direct connection (no transmitter, no j-box), UL version
61-0140RK-05
Sensor, LEL combustible (catalytic), direct connection (no transmitter, no j-box), cCSAus version
61-0190RK-CH4
Sensor, Methane (CH4) 0 - 100% LEL, IR, explosion proof direct connection, 3/4” NPT nipple (no transmitter, no j-box), cULus version
61-0190RK-HC
Sensor, Hydrocarbon (HC) 0 - 100% LEL, IR, isobutane standard calibration, explosion proof direct connection, 3/4” NPT nipple (no transmitter, no j-box), cULus version
61-0191RK-02
Sensor, Carbon Dioxide (CO2) 0 - 5,000 ppm, IR, explosion proof direct connection (no transmitter, no j-box), cULus version
61-0191RK-03
Sensor, Carbon Dioxide (CO2) 0 - 5%, IR, explosion proof direct connection (no transmitter, no j-box), cULus version
61-0191RK-05
Sensor, Carbon Dioxide (CO2) 0 - 50%, IR, explosion proof direct connection (no transmitter, no j-box), cULus version
61-0191RK-10
Sensor, Carbon Dioxide (CO2) 0 - 100%, IR, explosion proof direct connection (no transmitter, no j-box), cULus version
61-0192RK-CH4
Sensor, Methane (CH4) 0 - 100% volume, IR, explosion proof direct connection, 3/4” NPT nipple (no transmitter, no j-box), cULus version
61-5039RK-CH4
Sensor, Methane (CH4) 0-100% LEL, IR, plug-in style
61-5039RK-HC
Sensor, Hydrocarbon (HC) 0-100% LEL, IR, plug-in style
61-5040RK-03
Sensor, IR Carbon Dioxide (CO2) 0-5%, plug-in type, non-explosion proof
61-5040RK-05
Sensor, IR Carbon Dioxide (CO2) 0-50%, plug-in type, non-explosion proof
61-5040RK-10
Sensor, IR Carbon Dioxide (CO2) 0-100%, plug-in type, non-explosion proof
65-1025RK
Sensor, Oxygen (O2) 0 - 25%, capillary type, plug-in replacement for O2 assembly (65-2514RK & 65-2497RK)
65-2049-01
Sensor, Hydrogen Cyanide (HCN), 0 - 15 ppm, CT-7 style, explosion proof and non explosion proof
65-2510RK
Sensor, Oxygen (O2) 0 -25%, non explosion proof direct connect, partial pressure type (no transmitter, no j-box)
ES-1531-CO
Sensor, Carbon Monoxide (CO) 0 - 300 ppm, plug-in type, CT-7 style, cCSAus version
ES-1537-H2S
Sensor, Hydrogen Sulfide (H2S) 0 - 100 ppm, plug-in type, CT-7 style, cCSAus version
NC-6205-01
Sensor, LEL Hydrogen (H2) specific, 1/2 NPT, with guard and silicone resistance, UL version, (no transmitter, no j-box)
NC-6205-05
Sensor, LEL Hydrogen (H2) specific, explosion proof direct connection, with silicone resistance, cCSAus version, (no transmitter, no j-box)

Direct Connect Replacement Sensors For Non Explosion Proof

Item
Description
61-5040RK-02
Sensor, IR Carbon Dioxide (CO2) 0-5,000 ppm, plug-in type, non-explosion proof
61-5040RK-03
Sensor, IR Carbon Dioxide (CO2) 0-5%, plug-in type, non-explosion proof
61-5040RK-05
Sensor, IR Carbon Dioxide (CO2) 0-50%, plug-in type, non-explosion proof
61-5040RK-10
Sensor, IR Carbon Dioxide (CO2) 0-100%, plug-in type, non-explosion proof
65-1025RK
Sensor, Oxygen (O2) 0 - 25%, capillary type, plug-in replacement for O2 assembly (65-2514RK & 65-2497RK)
65-2510RK
Sensor, Oxygen (O2) 0 -25%, non explosion proof direct connect, partial pressure type (no transmitter, no j-box) 
ES-1531-CO
Sensor, Carbon Monoxide (CO) 0 - 300 ppm, plug-in type, CT-7 style, cCSAus version
ES-1537-H2S
Sensor, Hydrogen Sulfide (H2S) 0 - 100 ppm, plug-in type, CT-7 style, cCSAus version

Direct Connect Sensors Remote Mount with Calibration Adapter / Splash Guard
Explosion Proof Class I, Division 1 Approved

Item
Description
61-1000RK-04
Sensor, LEL combustible (catalytic) with expl proof j-box (no transmitter), (specify calibration) and cal adapter/splash guard
61-1001RK-04
Sensor, LEL Hydrogen (H2) specific with explosion proof j-box (no transmitter) and calibration adapter/splash guard
61-1003RK-CH4-4
Sensor, IR, Methane (CH4) 0 - 100% LEL, explosion proof with j-box and calibration adapter/splash guard
61-1003RK-HC-04
Sensor, IR, Hydrocarbon (HC) 0 - 100% LEL, explosion proof with j-box and calibration adapter/splash guard

Direct Connect Replacement ESM-01 Toxic Sensors

Item
Description
ESM-01DH-ASH3
Sensor, Arsine (AsH3), 0 - 1.50 ppm, ESM-01 plug-in type
ESM-01DH-D-HCN
Sensor, Hydrogen Cyanide (HCN), 0 - 15 ppm, ESM-01 plug-in type
ESM-01DH-D-SO2
Sensor, Sulfur Dioxide (SO2), 0 - 6 ppm, ESM-01 plug-in type
ESM-01DH-PH3
Sensor, Phosphine (PH3), 0 - 1.0 ppm, ESM-01 plug-in type
ESM-01R-D-NH3
Sensor, Ammonia (NH3), 0 - 75 ppm, ESM-01 plug-in type, for diffusion instruments
ESM-K01-D-CL2
Sensor, Chlorine (Cl2), 0 - 3 ppm, ESM-01 plug-in diffusion type

Direct Connect Replacement CT-7 Toxic Sensors

Item
Description

Direct Connect Toxic Sensors with J-box, Non Explosion Proof, OK for Class I, Division

ESM-01 Series with J-box

Item
Description
65-2301RK-ASH3
Sensor, Arsine (AsH3) sensor, 0 - 1.5 ppm, direct connection, non explosion proof with j-box (no transmitter)
65-2301RK-HCN
Sensor, Hydrogen Cyanide (HCN) sensor, 0 - 15 ppm, direct connection, non explosion proof with j-box (no transmitter)
65-2301RK-NH3
Sensor, Ammonia (NH3) sensor, 0 - 75 ppm, direct connection, non explosion proof with j-box (no transmitter)
65-2301RK-PH3
Sensor, Phosphine (PH3) sensor, 0 - 1 ppm, direct connection, non explosion proof with j-box (no transmitter)
65-2301RK-SO2
Sensor, Sulfur Dioxide (SO2) sensor, 0 - 6 ppm, direct connection, non explosion proof with j-box (no transmitter)
Item
Description
65-2301RK-ASH3
Sensor, Arsine (AsH3) sensor, 0 - 1.5 ppm, direct connection, non explosion proof with j-box (no transmitter)
65-2301RK-HCN
Sensor, Hydrogen Cyanide (HCN) sensor, 0 - 15 ppm, direct connection, non explosion proof with j-box (no transmitter)
65-2301RK-NH3
Sensor, Ammonia (NH3) sensor, 0 - 75 ppm, direct connection, non explosion proof with j-box (no transmitter)
65-2301RK-PH3
Sensor, Phosphine (PH3) sensor, 0 - 1 ppm, direct connection, non explosion proof with j-box (no transmitter)
65-2301RK-SO2
Sensor, Sulfur Dioxide (SO2) sensor, 0 - 6 ppm, direct connection, non explosion proof with j-box (no transmitter)

Direct Connect Toxic Sensors, with J-box, Non Explosion Proof, OK for Class I, Division 2

CT-7 Series with J-box

Item
Description
65-2303-CL2-10
Sensor, Chlorine (Cl2), 0 - 10 ppm, CT-7 style with j-box, non explosion proof
65-2303-CL2-3
Sensor, Chlorine (Cl2), 0 - 3 ppm, CT-7 style with j-box, non explosion proof
65-2303-CL2-5
Sensor, Chlorine (Cl2), 0 - 5 ppm, CT-7 style with j-box, non explosion proof
65-2303-CLO2-1
Sensor, Chlorine Dioxide (ClO2), 0 - 1 ppm, CT-7 style with j-box, non explosion proof
65-2303-CLO2-3
Sensor, Chlorine Dioxide (ClO2), 0 - 3 ppm, CT-7 style with j-box, non explosion proof
65-2303-CLO2-5
Sensor, Chlorine Dioxide (ClO2), 0 - 5 ppm, CT-7 style with j-box, non explosion proof
65-2303-HCN-15
Sensor, Hydrogen Cyanide (HCN), 0 - 15 ppm, CT-7 style with j-box, non explosion proof
65-2303-NH3-1
Sensor, Ammonia (NH3), 0 - 100 ppm, CT-7 style with j-box, non explosion proof
65-2303-NH3-2
Sensor, Ammonia (NH3), 0 - 200 ppm, CT-7 style with j-box, non explosion proof
65-2303-NH3-5
Sensor, Ammonia (NH3), 0 - 500 ppm, CT-7 style with j-box, non explosion proof
65-2303-NH3-75
Sensor, Ammonia (NH3), 0 - 75 ppm, CT-7 style with j-box, non explosion proof
65-2303-SO2-10
Sensor, Sulfur Dioxide (SO2) 0 - 10 ppm, CT-7 style with j-box, non explosion proof

Non Explosion Proof Sensors, OK for Class I, Division 2

Item
Description
61-1007RK-02
Sensor, IR, Carbon Dioxide (CO2) 0 - 5,000 ppm, non explosion proof with j-box
61-1007RK-03
Sensor, IR, Carbon Dioxide (CO2) 0 - 5%, non explosion proof with j-box
61-1007RK-05
Sensor, IR, Carbon Dioxide (CO2) 0 - 50%, non explosion proof with j-box
61-1007RK-10
Sensor, IR, Carbon Dioxide (CO2) 0 - 100%, non explosion proof with j-box
65-2497RK
Sensor, Oxygen (O2) 0 - 25%, direct connect, capillary type, non explosion proof, with j-box
65-2498RK
Sensor, Hydrogen Sulfide (H2S) 0 - 100 ppm, direct connect, non explosion proof, with j-box
65-2499RK
Sensor, Carbon Monoxide (CO) 0 - 300 ppm, direct connect, non explosion proof, with j-box
65-2502RK
Sensor, Oxygen (O2) with j-box and I.S. barrier, partial pressure type, (no explosion proof approval)

Non-Explosion Proof Sensor, OK for Class I, Division 2, No J-box

Item
Description
61-0198RK-02
Sensor, IR Carbon Dioxide (CO2) 0-5,000 ppm, non explosion proof direct connect, replaceable sensor
61-0198RK-03
Sensor, IR Carbon Dioxide (CO2) 0-5%, non explosion proof direct connect, replaceable sensor
61-0198RK-04
Sensor, IR Carbon Dioxide (CO2) 0-20%, non explosion proof direct connect, replaceable sensor
61-0198RK-05
Sensor, IR Carbon Dioxide (CO2) 0-50%, non explosion proof direct connect, replaceable sensor
61-0198RK-10
Sensor, IR Carbon Dioxide (CO2) 0-100%, non explosion proof direct connect, replaceable sensor
65-2494RK
Sensor, Oxygen (O2) 0 - 25%, non explosion proof direct connect, capillary type, no j-box
65-2495RK
Sensor, Hydrogen Sulfide (H2S) 0 - 100 ppm, non explosion proof direct connect, no j-box
65-2496RK
Sensor, Carbon Monoxide (CO) 0 - 300 ppm, non explosion proof direct connect, no j-box
65-2510RK
Sensor, Oxygen (O2) 0 -25%, non explosion proof direct connect, partial pressure type (no transmitter, no j-box)

Non Explosion Proof Sensors, OK for Class I, Division 2, no J-box - CT-7 Series

Item
Description
65-2302-SO2-10
Sensor, Sulfur Dioxide (SO2), 0 - 10 ppm, CT-7 style, non explosion proof
65-2302-HCN-15
Sensor, Hydrogen Cyanide (HCN), 0 - 15 ppm, CT-7 style, non explosion proof
65-2302-CLO2-5
Sensor, Chlorine Dioxide (ClO2), 0 - 5 ppm, CT-7 style, non explosion proof
65-2302-CLO2-3
Sensor, Chlorine Dioxide (ClO2), 0 - 3 ppm, CT-7 style, non explosion proof
65-2302-CLO2-1
Sensor, Chlorine Dioxide (ClO2), 0 - 1 ppm, CT-7 style, non explosion proof
65-2302-CL2-10
Sensor, Chlorine (Cl2), 0 - 10 ppm, CT-7 style, non explosion proof
65-2302-CL2-5
Sensor, Chlorine (Cl2), 0 - 5 ppm, CT-7 style, non explosion proof
65-2302-CL2-3
Sensor, Chlorine (Cl2), 0 - 3 ppm, CT-7 style, non explosion proof
65-2302-NH3-5
Sensor, Ammonia (NH3), 0 - 500 ppm, CT-7 style, non explosion proof
65-2302-NH3-2
Sensor, Ammonia (NH3), 0 - 200 ppm, CT-7 style, non explosion proof
65-2302-NH3-1
Sensor, Ammonia (NH3), 0 - 100 ppm, CT-7 style, non explosion proof
65-2302-NH3-75
Sensor, Ammonia (NH3), 0 - 75 ppm, CT-7 style, non explosion proof

Non Explosion Proof Sensors, OK for Class I, Division 2, no J-box - ESM-01 Series

Item
Description
65-2300RK-SO2
Sensor, Sulfur Dioxide (SO2) sensor, 0 - 6 ppm, direct connection with conduit mounting, non explosion proof (no transmitter, no j-box)
65-2300RK-PH3
Sensor, Phosphine (PH3) sensor, 0 - 1 ppm, direct connection with conduit mounting, non explosion proof (no transmitter, no j-box)
65-2300RK-HCN
Sensor, Hydrogen Cyanide (HCN) sensor, 0 - 15 ppm, direct connection with conduit mounting non explosion proof (no transmitter, no j-box)
65-2300RK-ASH3
Sensor, Arsine (AsH3) sensor, 0 - 1.5 ppm, direct connection with conduit mounting, non explosion proof (no transmitter, no j-box)
65-2300RK-NH3
Sensor, Ammonia (NH3) sensor, 0 - 75 ppm, direct connection with conduit mounting, non explosion proof (no transmitter, no j-box)