Calibrate the sensor by first "burning it in" (preheating for 48 hours) as described in the sensor data sheet, then expose the sensor to known concentrations of the gas of interest, in dry air. Note that the MQ-7 responds to several different gases.
Calibrate the sensor by first "burning it in" (preheating for 48 hours) as described in the sensor data sheet, then expose the sensor to known concentrations of the gas of interest, in dry air. Note that the MQ-7 responds to several different gases.