jonw
Well-Known Member
I have a PID controller with a pin-out per the photo below. I have a cheap PT100 probe with 2 blue connectors and 1 red one. I've connected the red connector to pin 5, and the 2 blue ones to pins 3 and 4 (any other configuration just gives an error.)
This seems to work OK, except for the temperature reported is about 5-6 degrees below what my other thermometers read. Have I got the wiring wrong? If not, is there a way to calibrate these things?
Edit: Could it be the cheap PT100 at fault?
Cheers,
Jon
This seems to work OK, except for the temperature reported is about 5-6 degrees below what my other thermometers read. Have I got the wiring wrong? If not, is there a way to calibrate these things?
Edit: Could it be the cheap PT100 at fault?
Cheers,
Jon