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Old 04-10-2014, 12:02 AM   #1
Welderbydaybrewerbynight
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Default RTD pt100 problems

I recently purchased four tri-clamp rtd pt100 sensors and as I am wiring them up I have brought up two of the PIDs 3 of them are brand new and one is a year or two old. I now have 1 new and the old one powered up and all of the rtds are wired up to disconnects so I can interchange them and no matter which 1 I use in any vessel I keep getting a temperature reading of 1205 degrees. I used to just have a thermocouple on the old PID, and it worked just fine I know I have all of the wiring right. I have switched over the old PID to make sure it reads as an RTD, is there some mistake I'm making here I don't understand? Any help or clues would be very very much appreciated.

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Old 04-10-2014, 12:06 AM   #2
Welderbydaybrewerbynight
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I don't have an ohms meter so I can't check if the RTD's are okay but surely all 4 of them wouldn't be bad I just bought them from auberins electronics

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Old 04-10-2014, 05:20 AM   #3
acidrain
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You're going to need a meter to measure/check the probes. I have heard of some probes having the colored wires messed up. If they are all the same brand/kind, they could all be wrong.
Which PID are you using? Is there supposed to be a jumper?

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