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[email protected]Dec 13, 2015SENSING CIRCUIT (MQ5) •The sensing circuit consists of an MQ5 sensor which senses LPG leakage of the order 200ppm to 1000ppm (capable of causing explosions) and is connected to the microcontroller to be supplied with 5V DC. MQ 5 gas sensor was chosen over other MQ S because it is suitable for detecting LPG and natural gas [8] 10.
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