Simple RTD filtering circuit

[BeerIsGood33]

I have a noisy RTD input to a control network and suspect the analog input module. Problem is, I can't rule out the wiring between the RTD and the module. Is there an easy low pass filter capacitor or something that I can try to use to rule out the noise coming from the wiring?

 

[ScottyUK]

Connect the RTD directly to the input. That will rule out noise coming in through the field wiring.


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Sometimes I only open my mouth to swap feet...

 

[itsmoked]

Or a resistor the value of which, is in the vicinity of the noisy signal you are seeing.

Keith Cress
Flamin Systems, Inc.-

http://www.flaminsystems.com