• Chinese
  • Dual Channel NDIR Sensor Methane(CH4) Combustible Gas Detector-SDG11DF33

    The SDG11DF33 family of integrated thermopile sensor for NDIR (Infrared gas detection) is a dual channel thermopile sensor having an output signal voltage directly proportional to the incident infrared (IR) radiation power. An infrared narrow band pass filter in front of the sensor makes the device sensitive to target gas concentration. Reference channel provides compensation for all applicable conditions.


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    General Description

    The SDG11DF33 family of integrated thermopile sensor for NDIR (Infrared gas detection) is a dual channel thermopile sensor having an output signal voltage directly proportional to the incident infrared (IR) radiation power. An infrared narrow band pass filter in front of the sensor makes the device sensitive to target gas concentration. Reference channel provides compensation for all applicable conditions. The SDG11DF33 comprising a new type CMOS compatible thermopile sensor chip features good sensitivity, small temperature coefficient of sensitivity as well as high reproducibility and reliability. A high-precision thermistor reference chip is also integrated for ambient temperature compensation.

    SDG11DF33 NDIR CH4 sensor detect Methane(CH4) concentration from 0 to 100% based on NDIR technology which is superior than thermal catalysis and thermal conductivity technology. It has advantages of convenient operation, accurate measurement, reliable operation, simultaneous output of voltage and serial port, and double beam design. It meets the different requirements of industrial field and laboratory measurement, and is widely used in gas detection and analysis in petrochemical, chemical, coal mine, medical and laboratory fields.
    It has the features of:
    NDIR technology with long lifespan and full measurement range
    Internal full range temperature compensation
    Diffusion sampling, stable performance
    High precision
    Compact size,fast response
    Corrosion prevention
    Easy install and less maintenance
    Compatible with digital and analog voltage signal output

    Features and Benefits

    High responsivity, High Signal-Noise ratio

    Small size, high reliability, 4-pin metal housing TO-5

    Dual channel with reference channel for compensation

    Operating Temperature Range: −40℃ to +125℃

    1.212V offset voltage for thermopile sensor

    Applications

    NDIR gas sensing

    In door air quality

    Greenhouse

    Electrical Characteristics

    1

    Pin Configurations & Package Outlines

    2

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