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    Fixed Carbon Monoxide (CO) Gas Detector, 0 to 100/500/1000 ppm

    5 out of 5 based on 1 reviews | Write a review
    Fixed gas detector monitors the Carbon Monoxide/CO and sounds the alarm with remote control, explosion-proof design, using high accuracy sensor, fast response and high reliability, available for measuring range 0-100ppm, 0-500ppm or 0-1000ppm for your selection.
    Free shipping
    Delivery date: 6-12 days

    Carbon Monoxide (CO) gas detector is fixed to monitor the CO concentration in environment or pipeline and alarm with sound and light.


    • Being compatible with all kinds of controlled alarms, PLC, DCS and other control system, and can be remote monitored.
    • Explosion-proof design, fast, reliable and stable.
    • Self-calibration function, and three standard keys will be used to realize on-site maintenance.
    • Two-stage alarm with sound and light, and alarm point is settable.
    • Infrared ray controller can remote realize the alarm point settings, zero calibration, and address modification.
    • Can output one or two on-off signals, can drive ventilator, solenoid valve or other external devices.

    Carbon Monoxide Detector Specification

    Model ATO-YT95H-CO-A
    Detection Principle Electrochemistry
    Gas Carbon Monoxide (CO)
    Range (Optional) 0 to 100 ppm, 0 to 500 ppm, or 0 to 1000 ppm
    Resolution 0.01ppm, 0.1ppm or 1ppm (related to the selected range)
    Accuracy ≤±3% F.S.
    Responce Time ≤10s
    Repeatability ≤±1%
    Recovery Time ≤10s
    Linearity Error ≤±1%
    Zero Shift ≤±1% (F.S./year)
    Signal Output (Optional) 4-20mA, 0-5V, RS485, RS232, relay, wireless digital
    Alarms Sound, light
    Display High light nixie tube display
    Installation Wall-mounted, piping type, flow-type (according to the detected environment)
    Connection G1/2 male thread explosion-proof flexible pipe
    Operating Time 24h
    Explosion-proof Grade Exia ll CT6
    Protection Grade IP65
    Operating Temperature -20℃~50℃
    Operating Humidity 0~95%RH (non-condensing)
    Dimension 180*150*90mm
    Weight ≤1.6kg

    Common Gases and Ranges for Fixed Gas Detectors

    Gas Range (Default) Range (Optional) Resolution
    Combustible/Flammable Gas (EX) 0-100%LEL 0-100%LEL 1%LEL
    Oxygen (O2) 0-30%Vol 0-25%Vol 0.01%Vol
    Carbon Monoxide (CO) 0-1000ppm 0-100ppm, 0-500ppm, 0-1000ppm, 0-2000ppm 0.01ppm, 0.1ppm, 1ppm
    Hydrogen Sulfide (H2S) 0-100ppm 0-50ppm, 0-100ppm, 0-500ppm, 0-1000ppm 0.01ppm, 0.1ppm, 1ppm
    Ammonia (NH3) 0-100ppm 0-100ppm, 0-500ppm,0-1000ppm 0.01ppm, 0.1ppm, 1ppm
    Chlorine (Cl2) 0-10ppm 0-10ppm, 0-20ppm, 0-50ppm, 0-100ppm 0.01ppm, 0.1ppm
    Hydrogen Chloride (HCL) 0-20ppm 0-10ppm, 0-20ppm, 0-50ppm, 0-100ppm 0.01ppm, 0.1ppm
    Hydrogen (H2) 0-1000ppm 0-1000ppm, 0-2000ppm, 0-5000ppm, 0-10000ppm 0.1ppm, 1ppm
    Nitric Oxide (NO) 0-100ppm 0-100ppm, 0-250ppm, 0-500ppm, 0-1000ppm 0.01ppm, 0.1ppm, 1ppm
    Nitrogen dioxide (NO2) 0-20ppm 0-20ppm, 0-50ppm, 0-100ppm 0.01ppm, 0.1ppm, 1ppm
    Formaldehyde (CH2O) 0-10ppm 0-10ppm, 0-20ppm, 0-50ppm, 0-100ppm 0.01ppm, 0.1ppm, 1ppm
    Ozone (O3) 0-10ppm 0-1ppm, 0-5ppm, 0-10ppm, 0-20ppm, 0-50ppm, 0-100ppm 0.001ppm, 0.01ppm, 0.1ppm, 1ppm
    Sulfur Dioxide (SO2) 0-20ppm 0-10ppm, 0-20ppm, 0-100ppm 0.01ppm, 0.1ppm, 1ppm
    Ethylene Oxide (ETO) 0-100ppm 0-20ppm, 0-50ppm, 0-100ppm, 0-500ppm, 0-1000ppm 0.01ppm, 0.1ppm, 1ppm
    Phosphine (PH3) 0-10ppm 0-10ppm, 0-20ppm, 0-50ppm, 0-100ppm, 0-200ppm, 0-500ppm 0.01ppm, 0.1ppm, 1ppm
    Nitrogen (N2) 0-100%Vol 0-100%Vol 0.01%Vol
    Hydrogen Fluoride (HF) 0-10ppm 0-10ppm, 0-50ppm 0.01ppm

    Note: Some common gases and the default ranges are listed in the above table, as well as the optional measuring range. If you have any requirements, please feel free to contact us.

    Tips: Working principle of gas detector sensors

    1. Electrochemical Sensors
    Due to the active chemical properties, the testing gases generally have reducibility or oxidizability. Electrons are released or absorbed in the chemical reactions and a large number of electrons form a current. The current is proportional to the gas concentration, thus the gas concentration is obtained by measuring the current.

    2. Catalytic Combustion Sensors
    It works based on the principle that the heat is released from the combustion reaction of a surface combustible gas, namely combustion increases the temperature of the platinum wire coil and thus the resistance of the coil increases. The gas concentration is obtained by measuring the resistance value change of platinum wire. It’s suitable for measuring low concentration combustible gas.

    3. PID Photo Ion Sensors
    High energy ultraviolet rays ionize the organic gases, and then amplify the current of charged ions on the plate to measure. The current value reflects the gas concentration.

    4. Infrared Sensors
    Different combustible gas has different absorption ability to infrared ray. The concentration of combustible gas can be measured by detecting the current on the infrared photosensitive component.

    5. Semiconductor Sensor
    Due to the absorbability of semiconducting materials on gas, change the resistance value of the gas sensitive resistance to judge the existence of gas.

    Existing reviews of Fixed Carbon Monoxide (CO) Gas Detector, 0 to 100/500/1000 ppm
    Works so good.
    We bought this carbon monoxide detector as we have to monitor the CO exposure in the well. The detector arrived in time and was easy to install. So far, the detector gave us twice alarming. Works so good.
    From: Marcel | Date: 18/12/2018
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