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RareDevil
RareDevil
1 year ago

I didn’t check all the values now, but at 4-20mA what’s definitely wrong… The negative value is already higher than you have entered the 0 value. The digital value 0 here corresponds to 4mA, since the measuring range is 4-20mA…

Then the question if you would use the whole range of digitized values, i.e. from min to max, how would you then realize overflow, overcontrol and undercontrol? If, for example, 20mA represents the maximum possible value digital, and your sensor goes beyond 20mA due to errors? Then how do you sill a faulty sensor? Or at 4mA as the lowest value? Sensors with at least 4mA are used to detect a sensor failure/wireburch… All under 4mA represents a defect. If 4mA is the minimum possible digital value, you would not be able to see any error at the digitized measurement because less than the minimum value does not go and is not represented…

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