Hi BSTRobin, First of all thanks for the answer to my previous question, but could you tell me the reason why the initial gas resistance is never the same when I take two normal air readings in a row. I am using the standard heater profile with a difference in the times of each heater step (1 second for each heater step). The following graphs show the two readings taken and as you can see, the initial value is never the same. The first figure was the first one to be executed. The second figure corresponds to the second experiment.
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