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Product Description The SRAQ-G016 gas sensor module detects the presence and concentration of ammonia, as well as other harmful vapors such as sulfide and benzene. Integrated circuitry produces a non-linear voltage signal corresponding to the gas concentration. With a detection range of 10 to 1000 ppm, this industrial sensor can be used in areas such as public restrooms, manufacturing facilities, warehouses and other commercial buildings where ammonia gas concentration is a concern.
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Technical Parameters Working Voltage 5 VDC ± 0.2 V Working Current <150 mA Gas Detection Ammonia, sulfide, benzene-based steam and other harmful gases Detection Concentration 10 1000 PPM (Ammonia, toluene, hydrogen) Preheating Time > 30 mins Response Time ≤1 sec Recovery Time ≤30 sec Aout (Analog 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 MQ135 Probe on internet.