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HYDROGEN (H ) SENSOR MODULE User Guide for SRAQ-G013 Product Description The SRAQ-G013 gas sensor module detects the presence and concentration of Hydrogen(H ) gas. Integrated circuitry produces a voltage signal corresponding to the gas concentration. Having high sensitivity to this flammable gas, the sensor module can detect hydrogen gas concentrations ranging from 50 to 10,000 ppm.
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Technical Parameters Working Voltage 5 VDC ± 0.2 V Working Current <150 mA Gas Detection Hydrogen 50 10000 ppm (Hydrogen) Detection Concentration Preheating Time >30 mins Response Time ≤1 sec Recovery Time ≤30 sec 0 5 V (Non-linear) Aout (Analog signal) Output Mode Dout (Level signal)
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Notes Confirm the polarity and the voltage of the power supply before powering ON the sensor. The analog output of this module is non-linear. When connect to microcontroller, it should be connected to ADC interface of the microcontroller. The relationship between the resistance ratio and the concentration is a logarithmic relationship. For more info on typical sensitivity curve, check MQ8 Probe on internet.
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