Sensor MQ-4

Hello, my name is mauri, I'm from Brazil and I am working with MQ sensors, more specifically the MQ-4, plus I'm having trouble taking readings in ppm'm a little lay in electric and can not understand your data sheet . someone has your schedule to ppm? or help me calibrate this sensor .. without the need to create an environment of known concentration.

The sensor reacts on various gases, i.e. you'll get values according to the actual gas mix, temperature and humidity. I don't think that you'll succeed without proper calibration and additional sensors for temperature and humidity.