Hello, I am new here and I really am confuse about the calibration of mq-135 sensor. That’s the sensor we need for our study and I have read many articles saying that I need to calibrate it to attain accurate results. Do I only need to follow the datasheet or is there any computations needed or is calibration need to be coded. I read a lot of articles and they have different ways so much that I don’t know what’s right and wrong. Please help me.
To calibrate the sensor, one or more gas mixtures of known composition is required.
With that starting point, collect some data with those test gases, and use the methods that you learned by studying this excellent tutorial:
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