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    • Single Gas
      • IsoButane (C4H10)
      • Methane (CH4)
      • Oxygen (O2)
      • Nitrogen Dioxide (NO2)
      • Phosphine (PH3)
      • Butane (C4H10)
      • Pentane (C5H12)
      • Hydrogen (H2)
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      • Carbon Monoxide (CO)
      • Isobutylene (C4H8)
      • Helium (HE)
      • Ammonia (NH3)
      • Nitrogen (N2)
      • Carbon Dioxide (CO2)
      • Benzene (C6H6)
      • Nitric Oxide (NO)
      • Hexane (C6H14)
      • Hydrogen Chloride (HCL)
      • Hydrogen Cyanide (HCN)
      • Chlorine (CL2)
      • Sulfur Dioxide (SO2)
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    Calibration Gas

    Calibration Gas

    • Single Gas
      • IsoButane (C4H10)
      • Methane (CH4)
      • Oxygen (O2)
      • Nitrogen Dioxide (NO2)
      • Phosphine (PH3)
      • Butane (C4H10)
      • Pentane (C5H12)
      • Hydrogen (H2)
      • Ethylene Oxide (C2H4O)
      • Ethylene (C2H4)
      • Ethanol (C2H6O)
      • Ethane (C3H6)
      • Carbon Monoxide (CO)
      • Isobutylene (C4H8)
      • Helium (HE)
      • Ammonia (NH3)
      • Nitrogen (N2)
      • Carbon Dioxide (CO2)
      • Benzene (C6H6)
      • Nitric Oxide (NO)
      • Hexane (C6H14)
      • Hydrogen Chloride (HCL)
      • Hydrogen Cyanide (HCN)
      • Chlorine (CL2)
      • Sulfur Dioxide (SO2)
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    • Multi Gas
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    • Single Gas
      • IsoButane (C4H10)
      • Methane (CH4)
      • Oxygen (O2)
      • Nitrogen Dioxide (NO2)
      • Phosphine (PH3)
      • Butane (C4H10)
      • Pentane (C5H12)
      • Hydrogen (H2)
      • Ethylene Oxide (C2H4O)
      • Ethylene (C2H4)
      • Ethanol (C2H6O)
      • Ethane (C3H6)
      • Carbon Monoxide (CO)
      • Isobutylene (C4H8)
      • Helium (HE)
      • Ammonia (NH3)
      • Nitrogen (N2)
      • Carbon Dioxide (CO2)
      • Benzene (C6H6)
      • Nitric Oxide (NO)
      • Hexane (C6H14)
      • Hydrogen Chloride (HCL)
      • Hydrogen Cyanide (HCN)
      • Chlorine (CL2)
      • Sulfur Dioxide (SO2)
      • View All
    • Multi Gas
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  • Replacement Sensors

    Replacement Sensors

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    Replacement Sensors

    Replacement Sensors

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    • Replacement Sensors
    • By RKI Instruments:
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    • GasWatch 3
    Shop By Price
    • $0.00 - $153.00
    • $153.00 - $178.00
    • $178.00 - $204.00
    • $204.00 - $229.00
    • $229.00 - $255.00

    GasWatch 3

    • A durable galvanic oxygen (Oâ‚‚) sensor designed for use with GX-2009, GX-2012, Gas Tracer, GX-6000, OX-03, and GasWatch 3 gas monitors. The sensor features a compact cylindrical housing clearly labeled with the part number (OS-BM2) and measurement range (0-25% Vol.). It includes secure connectors at the base for easy installation and seamless integration with compatible devices. Designed for precision, it ensures reliable oxygen monitoring in industrial environments.
      Add to Cart

      RKI Instruments

      RKI Galvanic, Oxygen (O2) 0-25% Vol. for GX-2009/GX-2012/ GasTracer/GX-6000/OX-03/GasWatch 3 Replacement Sensor

      MSRP:
      Was:
      Now: $127.00
      Add to Cart
    • A dual-sensor module designed for GasWatch 3 and 04 Series gas monitors. The compact unit features a durable housing with clearly labeled details for easy identification. The sensor includes an electrochemical detection system for measuring carbon monoxide (CO) levels from 0-300 ppm and oxygen (Oâ‚‚) levels from 0-25% volume. The module has connectors at the base for seamless integration with compatible devices, ensuring reliable and accurate performance in industrial and safety applications.
      Add to Cart

      RKI Instruments

      RKI Combo, EC, Carbon Monoxide (CO) 0-300 ppm/ Oxygen (O2) 0-25% vol. for GasWatch 3 and 04 Series Replacement Sensor

      MSRP:
      Was:
      Now: $255.00
      Add to Cart
    • RKI Replacement Hydrogen Sulfide (Hâ‚‚S) sensor, part number ESR-A13i-H2S. Compatible with GX-3R, GX-3R Pro, and GasWatch 3 gas monitors. Measures 0-200 ppm Hâ‚‚S with ±5% accuracy, ideal for precise gas detection. Backed by a 3-year warranty.
      Add to Cart

      RKI Instruments

      RKI Hydrogen Sulfide (H2S) 0-200 ppm for GX-3R/GX-3R Pro/GasWatch 3 Replacement Sensor

      MSRP:
      Was:
      Now: $160.00
      Add to Cart
    • RKI Replacement Carbon Monoxide (CO) sensor, part number ESR-A13P-CO, compatible with GX-3R, GX-3R Pro, and GasWatch 3 gas monitors. Measures 0-2000 ppm CO with ±5% accuracy, designed for precise detection in safety-critical environments. Backed by a 3-year warranty.
      Add to Cart

      RKI Instruments

      RKI Carbon Monoxide (CO) 0-2000 ppm for GX-3R/GX-3R Pro/GasWatch 3 Replacement Sensor

      MSRP:
      Was:
      Now: $160.00
      Add to Cart
    • "RKI Carbon Monoxide (CO) with Hydrogen (Hâ‚‚) compensated sensor, part number ESR-A13P-CO. Compatible with GX-3R, GX-3R Pro, and GasWatch 3 gas monitors. Measures 0-2000 ppm CO with ±5% accuracy, designed for environments with Hydrogen interference. Backed by a 3-year warranty.
      Add to Cart

      RKI Instruments

      RKI Carbon Monoxide (CO) 0-2000 ppm with H2 compensation for GX-3R/GX-3R Pro/GasWatch 3/04 Series Replacement Sensor

      MSRP:
      Was:
      Now: $255.00
      Add to Cart
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