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LIQUIFIED PETROLEUM GAS SENSOR MODULE User Guide for SRAQ-G111 Product Description The SRAQ-G111 gas sensor module detects the presence and concentration of liquefied petroleum gas, namely propane and butane. Integrated circuitry produces a non-linear voltage signal corresponding to the gas concentrations. With high sensitivity and detection range of 300 to 1000 ppm, the SRAQ-G111 is well suited for use in detecting LPG leaks and triggering alarms.
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Technical Parameters Working Voltage 5 VDC ± 0.2 V Working Current <150 mA Gas Detection Liquefied petroleum gas, propane, butane 300 1000 ppm (Liquefied petroleum gas, propane, butane) Detection Concentration Preheating Time > 30 mins Response Time >1 sec Recovery Time ≤30 sec Aout (Analog signal)
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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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