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AMMONIA (NH ) GAS SENSOR MODULE (ADJUSTABLE SENSITIVITY) User Guide for SRAQ-G117 Product Description The SRAQ-G1117 gas sensor module detects the presence and concentration of ammonia, as well as other ammonia based gases. Integrated circuitry produces a non-linear voltage signal corresponding to the gas concentration. With a detection range of 5 to 500 ppm, the SRAQ-G117 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 (NH 5 500 ppm (NH Detection Concentration Zero Voltage 0.5~1.5 V Preheating Time > 30 mins Response Time >3 sec Recovery Time ≤60 sec Aout (Analog signal) Vair~4.8 V, non-linear, higher the concentration, higher the voltage Output Mode...
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Mounting Diagram Mount the PCBA to the enclosure with screws. Hole diameter 3mm, pitch distances as per the diagrams given below. Typical Sensitivity Curve The calculation of the resistance ratio according to the output voltage is as follows: The sensor is energized in relatively clean air for more than half an hour and after measure the output voltage value of Aout. VCC is the power supply voltage, 5 VDC RL is the load resistance VRL = Aout = Vair value...
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