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    Methane Sensor, 0 to 100% Vol

    High-accuracy methane sensor with measuring range from 0 to 100% Vol, working voltage 5 VDC, interface level 3V. The methane CH4 sensor is widely used for industrial field instrumentation, industrial-process control and safety protection.
    SKU: ATO-ICDS-7042A
    30-day Returns
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    Delivery date: 6-12 days

    The CH4 sensor has built-in temperature compensation, working temperature from -40℃ to 70℃ . The combustible gas sensor has the characteristics of good selectivity, no oxygen dependence, stable performance, long life and ultra-low power consumption.


    • High sensitivity, high resolution, low power consumption, quick response.
    • UART output.
    • Temperature compensation, excellent stability.
    • Long lifespan, Anti-poisons, anti-vapor interference.
    • Detect combustible gas concentration matching with flame-proof marked detector in area 1&2 explosive environments which mix of Ⅱ A, Ⅱ B, Ⅱ C and T1-T6 flammable gases, vapors and air.


    • Model: ATO-ICDS-7042A
    • Detection gas: Combustible gas, other combustible gas sensor can be customized.
    • Working voltage: (5.0±0.1) VDC
    • Average current: <0.60mA (Peak current< 150mA)
    • Interface level: 3.0V (Compatible with 5V)
    • Measuring range: 0~100% LEL
    • Output signal: UART (TTL)
    • Warm-up time: < 30s
    • Response time: T90 < 30s
    • Working temperature: -40℃ ~ 70℃
    • Working humidity: 0~95% RH (no condensation)
    • Dimension: Φ51*65mm
    Gas name Molecular formula Range Resolution Precision Note
    Methane CH4 0~5% Vol 0.01% Vol ±3%FS @(10℃-40℃) ±5%FS @(-40℃-10℃,40℃-70℃) With Temperature Compensation
    Methane CH4 0~10% Vol 0.1% Vol
    Methane CH4 0~100% Vol 0.1% 
    Propane  C3H8 0-2.2% Vol 0.01% Vol 
    Chloromethane CH3CL 0-8.1% Vol 0.01% Vol
    Acetylene C2H2 0-2.3% Vol 0.02% Vol
    Ethane CH3CH3 0-3.0% Vol 0.03% Vol
    Isobutene C4H10 0-1.8% Vol 0.018% Vol
    Gasoline C3-C12 0-1.1% Vol 0.01% Vol ±5%FS @(10℃-40℃), ±10%FS @(-40℃-10℃,40℃-70℃) Without Temperature Compensation
    Methanol CH3OH 0-5.5% Vol 0.06% Vol
    Dichloromethane CH2CL2 0-15% Vol 0.15% Vol
    Toluene C7H8 0-1.2% Vol 0.012% Vol
    Alcohol C2H5OH 0-3.3% Vol 0.033% Vol
    Oxirane C2H4O 0-3.0% Vol 0.03% Vol
    Acetic acid CH3COOH 0-4.0% Vol 0.04% Vol
    Ethyl acetate CH3COOC2H5 0-2.0% Vol 0.02% Vol

    Dimension (mm)

    Methane sensor dimension 

    Tips: Where should methane sensors be placed?

    Methane sensors should be strategically placed in areas where methane gas buildup is likely to occur. Some common locations for placing methane sensors include:

    • Near Gas Appliances: Install methane sensors near gas-powered appliances such as stoves, ovens, water heaters, furnaces, and boilers. These appliances are potential sources of methane leaks, especially if they are old or poorly maintained.
    • Along Gas Pipelines: Place methane sensors along gas pipelines to detect leaks or emissions along the pipeline route. Monitoring methane levels at various points along the pipeline can help identify and address potential leaks promptly.
    • In Industrial Facilities: Install methane sensors in industrial facilities where methane gas is used or produced, such as refineries, chemical plants, wastewater treatment plants, and agricultural operations. These facilities may have equipment or processes that produce methane as a byproduct, posing a risk of leaks or emissions.
    • Confined Spaces: Install methane sensors in confined spaces such as basements, crawl spaces, tunnels, and underground vaults where methane gas may accumulate. Poor ventilation in these areas can lead to the buildup of methane gas, posing a risk of explosion or asphyxiation.
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