Doing an installation with generator power and analog is very strange.
Calibrated 6 of 7 pH meters, 7th wouldn't zero, went back to the others and they wouldn't zero. Also have 4-20 ma pressure sensors and 1 works, 1 doesn't.
No ground?
Something in sin wave from generator?
Noise?
??
Calibrated 6 of 7 pH meters, 7th wouldn't zero, went back to the others and they wouldn't zero. Also have 4-20 ma pressure sensors and 1 works, 1 doesn't.
No ground?
Something in sin wave from generator?
Noise?
??