Hi, I have a small question regarding information provided on this link: https://learn.pimoroni.com/tutorial/sandyj/getting-started-with-enviro-plus
I got the reading for the different type of gases (reducing, oxidising, nh3) in Ohms (if I am not mistaken). However, how do I calculate the concentration value of the gas in ppm as seen in the graph provided in the explanation above:
What will be the CO concentration of a 237175.141075 Ohms for “reducing”?
What are Rs and R0? Is there a way to adapt the estimation of the gas based on the condition in which the measurement take place (like temperature, average humidity, or something like that).
Thank you for your help!
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