Aiming at problem of explosion caused by liquefied gas leak

an instrument for gas volume fractionmeasurement is designed using MC9XS128 single chip computer and MQ—2 gas sensor as the core.Plotting andfitting of MQ—2 sensor temperature characteristic curve are focused on

and temperature correction of the test dataof sensors is realized by the fitting curve.The experimental data show that the scheme can be used for liquefied gasleak detection and the sensor measurement errors caused by temperature change is solved effectively bytemperature compensation.