measure temperature with pt100?

when i connect two pt100 with 4-20mA outputs, the first pt100 i have connected to ch1 and the second to ch2, and the problem is that the measurements get frozen and stay in static number, but when i disconnect any pt100, measurements got defrost, so i can only read one pt100 connected at time...................

Ramon Urias
Ramon Urias
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Asked on 5/31/19, 1:09 AM
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I've got a setup with 3 PT-100s and 1 humidity sensor and the best I can tell, they are fine. I do worry that they are not calibrated right as they seem to be lower than the temperature I think they should be according to other instruments. I am in the process of changing them to Kele T81U-2D temp sensors/transmitters. I'm not 100% convinced that the PT100 transmitters I've bought are "industrial" enough for my project. 

Kelly Sprayberry
Kelly Sprayberry
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Answered on 7/3/19, 6:45 PM
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hi, would you mind sharing your code and wiring diagram so we can try to diagnose what's going on. you can send it to connect@industruino.com if more convenient

Tom
Tom
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Answered on 5/31/19, 2:28 AM
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Asked: 5/31/19, 1:09 AM
Seen: 192 times
Last updated: 7/3/19, 6:45 PM