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CO2 Sensor SRH Series

CO2 Sensor SRH Series


Miniature NDIR CO2 sensor adopts NDIR technology to detect CO2 concentration in serve industrial applications. It adopts advanced non-dispersive infrared technology (NDIR), which can be integrated in safety and alarming devices, able to be used for CO2 incubator, greenhouse, environmental monitoring, HVAC, refrigerator, cold storage.The sensor contains all the necessary optics, electronics and firmware to provide a linearised, temperature_x0002_compensated output. It is with a heated infrared source inside a small chamber. In this case, the inside temperature of the gas sensor is much higher than the outside which can avoid condensing events and the high humidity influence. Besides, the PCB inside the gas sensor is specially treated for corrosion protection.
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    NDIR technology with long lifespan

    Diffusion sampling, compact size, easy handling

    High precision, less maintenance, fast response, stable performance

    Internal temperature compensation

    Corrosion prevention

    Detectivity level at 100ppm

    Ex-proofLevel ExiaⅡCT4


    Carbon dioxide gas leakage alarming

    CO2 incubator


    Controlled-atmosphere(CA) storage

    MAP(modified atmosphere packaging) storage

    Underground garage

    Water plant



Measurement range 0-5000ppm, 0-10000ppm, 0-20000ppm, 0-5%vol, 0-10%vol, 0-20% vol
Response time T90<15s
Warm-up 30s
Working temp -20℃~+50℃
Storage temp -40℃~+85℃
Working humidity 0-95%RH(non condensing)
Working voltage 3.5-5.5VDC
Working current 75-80mA
Signal output UART_TTL; Analogue output: 0.4V-2VDC
Dimensions ¢20*19mm (except pin)
Weight 15g


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