Results in Gas Detectors & Gas Monitors

1-25 of 4,664

  • Uni-t UT338C PM2.5 Detector / Haze Dust VOC Tester Air Quality Meter Sensor

    Uni-t UT338C PM2.5 Detector / Haze Dust VOC Tester Air Quality Meter Sensor

    UT338C Manual English. PM2.5 0 - 500 1ug/ m³ No comparability for PM2.5 non-standard detection error. PM2.5 VOC zero relative value Can be used by users. VOC 0.0 - 9.9 1mg/ m³ No comparability for VOC non-standard detection error.
    C $104.56
    Top Rated Seller
    Available for best offeror Best Offer
    From China
    Free shipping
    164 sold164 sold
  • TESTO PORTABLE FLUE GAS & EMISSIONS ANALYZER KIT MODEL 350

    TESTO PORTABLE FLUE GAS & EMISSIONS ANALYZER KIT MODEL 350

    For sale is a used TESTO PORTABLE FLUE GAS & EMISSIONS ANALYZER KIT MODEL 350. Sold as is since I know nothing about it.
    C $1,579.92
    From United States
  • MSA Altair 4X, Good Condition, Calibrated, New Sensors

    MSA Altair 4X, Good Condition, Calibrated, New Sensors

    When you buy used gas detectors, you are saving a lot of money. Gas detectors are expensive and prices keep going up. Besides that gas detectors require maintenance, calibration and sensors replacement.
    C $487.13
    Top Rated Seller
    C $19.37 shipping
    From United States
  • Flammable Combustible Gas Leak Detector Tester Natural Propane Sound Light Alarm

    Flammable Combustible Gas Leak Detector Tester Natural Propane Sound Light Alarm

    Used to detect various flammable gas, such as methane, ethane, propane, butane, alcohol, etc. 1 Combustible Gas Detector. Sensitivity: 50ppm Methane. Alarm limit: Lel 10% of Methane. Sound and light alarm against flammable gas leakage.
    C $37.62
    Top Rated Seller
    Free shipping
    From China
    51 sold51 sold
  • Portable Digital 0-100ppm Ammonia Gas NH3 Detector Temperature Measurement J3N4

    Portable Digital 0-100ppm Ammonia Gas NH3 Detector Temperature Measurement J3N4

    Portable detector for detecting ammonia gas(NH3). Portable ammonia gas detector with compact size and light weight is easy to carry and operate. It can display ammonia gas concentration and temperature at the same time.
    C $188.66
    From China
    Was: Previous PriceC $198.58
    Free shipping
  • UEI C50 Gas Combustion Analyzer Meter

    UEI C50 Gas Combustion Analyzer Meter

    Perfect for residential and light commercial efficiency testing and tuning of furnaces, and hot water heaters. Measures flue temperature and oxygen. Calculates carbon dioxide, gross/net efficiency and excess air.
    C $467.24
    Top Rated Seller
    C $20.62 shipping
    From United States
    5 watching5 watching
  • Amprobe CO2-200 Carbon Dioxide Meter

    Amprobe CO2-200 Carbon Dioxide Meter

    Meter is new in box.
    C $151.40
    Top Rated Seller
    Available for best offeror Best Offer
    From United States
    C $24.38 shipping
    Only 1 left!Only 1 left!
  • Robinair TIF8800X Combustible Gas Detector

    Robinair TIF8800X Combustible Gas Detector

    C $114.99
    Top Rated Seller
    Available for best offeror Best Offer
    C $28.00 shipping
  • Portable Gas Leak Detector Propane Butane Methane Natural Gas Safe Alarm Sensor

    Portable Gas Leak Detector Propane Butane Methane Natural Gas Safe Alarm Sensor

    Use the Portable Gas Detector to detect potential gas leaks in pipes, fittings, valves, gas storage tanks, propane barbecue grills, home appliances and hot water heaters. No calibration is required for the lifetime of the product.
    C $30.22
    Top Rated Seller
    Available for best offeror Best Offer
    From United States
    1,222 sold1,222 sold
  • Horiba MEXA-110 AFR Analyzer in working condition .Carb air fuel mixture exhaust

    Horiba MEXA-110 AFR Analyzer in working condition .Carb air fuel mixture exhaust

    Horiba MEXA-110 AFR Analyzer in working condition. Probe not included. Power cord is included. All working. Sale is for 1 unit.
    C $169.84
    Top Rated Seller
    Available for best offeror Best Offer
    From United States
    C $78.93 shipping
    Only 1 left!Only 1 left!
  • MSA Altair  0-100 PPM LCD Hydrogen Sulfide H2S Single-gas Detector 10092521

    MSA Altair 0-100 PPM LCD Hydrogen Sulfide H2S Single-gas Detector 10092521

    MODEL: 10092521. 0-100 PPM LCD Hydrogen Sulfide H2S Single-gas Detector. Gas Type H2S. The MSA ALTAIR Single Gas Detector for Hydrogen Sulfide will operate for over two years maintenance free. This long lifespan, coupled with the units high performance, result in one of the most cost effective single-gas detectors on the market.
    C $77.61
    From United States
    Available for best offeror Best Offer
    177 sold177 sold
  • Portable LCD Digital Carbon Monoxide Meter CO Gas Tester Detector Monitor I9S7

    Portable LCD Digital Carbon Monoxide Meter CO Gas Tester Detector Monitor I9S7

    Carbon monoxide detector can detect carbon monoxide concentration, observing concentration value all the time. Safety indication: regular light flashing and voice indication. When carbon monoxide concentration increases, buzzing voice frequency would also be increased.
    C $38.46
    Top Rated Seller
    Was: Previous PriceC $40.49
    From China
    Free shipping
  • MSA ALTAIR, QUICKCHECK STATION CO/H2S/O2/SO2/NO2 AUTO VERSION PART#10076704, NEW

    MSA ALTAIR, QUICKCHECK STATION CO/H2S/O2/SO2/NO2 AUTO VERSION PART#10076704, NEW

    You get:1pc msa altair quickcheck station kit part #10076704, new in retail box. Model # 10076704. Please Note:THIS IS FOR AMSA ALTAIR QUICKCHECK STATION , PART #10076704 , 100% NEW .
    C $400.00
    Top Rated Seller
    Free shipping
    Only 1 left!Only 1 left!
  • New Sealed MSA 10106722 Altair 4X/5X Xcell Combustible Lel Sensor (T)

    New Sealed MSA 10106722 Altair 4X/5X Xcell Combustible Lel Sensor (T)

    Range : -10 Degrees to 40 Degrees C Chemical Formula : LEL. Resolution : 1% LEL Item : Replacement Sensor.
    C $197.49
    Top Rated Seller
    From United States
  • BW Technologies Gas Alert MicroClip XT Gas Detector, Calibrated.

    BW Technologies Gas Alert MicroClip XT Gas Detector, Calibrated.

    This model replaced discontinued Gas Alert MicroClip. Used gas detectors, show some wear: light screen scratches, grinding marks, some have sharpie marks, but nothing major. Mechanically flawless, work great, alligator clip is tight.
    C $473.96
    Top Rated Seller
    C $19.21 shipping
    From United States
  • BW Gas Alert Quattro Gas Monitor O2 CO H2S LEL

    BW Gas Alert Quattro Gas Monitor O2 CO H2S LEL

    Enhanced resistance to common industrial cross sensitive gases such as methanol and ethanol (CO and H2S sensors). SureCell H2S and CO sensors are superior in very cold/dry and hot/humid conditions. confirmation of detector operation and compliance.
    C $487.14
    From United States
    C $92.00 shipping
    Only 1 left!Only 1 left!
  • Coalgas Natural Gas Methane Propane Leak Detector Tester Measurer for Home Safe

    Coalgas Natural Gas Methane Propane Leak Detector Tester Measurer for Home Safe

    The item use 9V battery drive, installing easily and durable. Type: Gas leakage alarm / detector. 1 X Gas leakage alarm screws user manual. Alarm current: <50 ma. We will always try our best to find you a satisfactory solution if any problem takes place!
    C $20.82
    Top Rated Seller
    Was: Previous PriceC $22.15
    From Hong Kong
    Available for best offeror Best Offer
    Free shipping
    186 sold186 sold
  • Oxygen Concentration Tester Meter Detector Analyzer

    Oxygen Concentration Tester Meter Detector Analyzer

    This is a mini pocket tester. It is widely used for analyzing the purity of oxygen in respirator machine of medical treatment, anesthesia machine, oxygen concentrator, high-pressure oxygen house and nursing case for infant.
    C $130.65
    Top Rated Seller
    C $6.58 shipping
    From China
  • UNI-T UT-338C Indoor VOC PM2.5 Air Quality Detector Monitor Thermometer 41E9

    UNI-T UT-338C Indoor VOC PM2.5 Air Quality Detector Monitor Thermometer 41E9

    Useful instrument for detecting VOC and PM2.5 which can effectively monitor indoor air quality. It also can measure indoor temperature and humidity. Can indicate PM2.5 pollution level and 1-hour average amount.
    C $106.25
    From China
    Was: Previous PriceC $111.85
    Free shipping
    46 watching46 watching
  • MSA Altair 4, Good Condition, Calibrated

    MSA Altair 4, Good Condition, Calibrated

    When you buy used gas detectors, you are saving a lot of money. Gas detectors are expensive and prices keep going up. Besides that gas detectors require maintenance, calibration and sensors replacement.
    C $447.63
    Top Rated Seller
    C $18.88 shipping
    From United States
  • Digital LCD Ammonia Gas Detector 0-100ppm Temperature Measurement W/Alarms C8G5

    Digital LCD Ammonia Gas Detector 0-100ppm Temperature Measurement W/Alarms C8G5

    Portable ammonia gas detector with compact size and light weight is easy to carry and operate. It can display ammonia gas concentration and temperature at the same time. It can be used in oil explanation, refining, chemical, municipal, sewage treatment and other industries.
    C $188.67
    Top Rated Seller
    Was: Previous PriceC $198.60
    From China
    Free shipping
  • GM8800A Combustible Gas Leak Detector Test Flammable Natural Methane Propane JL

    GM8800A Combustible Gas Leak Detector Test Flammable Natural Methane Propane JL

    C $35.47
    Top Rated Seller
    Free shipping
    From Hong Kong
  • CO2 Carbon Dioxide Data Logger Air Temperature Humidity Meter Monitor LCD/PC

    CO2 Carbon Dioxide Data Logger Air Temperature Humidity Meter Monitor LCD/PC

    Carbon dioxide (CO2) - It's used for measuring Carbon Dioxide concentration, temperature, humidity, dew point temperature and wet bulb temperature. 1 x CO2 Carbon Dioxide Air Temperature Humidity DataLogger.
    C $133.81
    Top Rated Seller
    Free shipping
    From China
    16 watching16 watching
  • ToxiRAE Pro Gas Monitor PGM-1860 HCN

    ToxiRAE Pro Gas Monitor PGM-1860 HCN

    C $39.48
    From United States
    C $24.29 shipping
  • NEW SPD202  EX Digital Combustible Gas Detector Meter Tester Natural LPG Coal

    NEW SPD202 EX Digital Combustible Gas Detector Meter Tester Natural LPG Coal

    Combustible gas leakage detecting of petrochemical industry. Combustible gas leakage detecting of Depot, gas station. Measured gas type: natural gas, liquefied petroleum gas, coal gas and other combustible gas.
    C $150.09
    Top Rated Seller
    C $12.51 shipping
    From China
    20 watching20 watching