I was wondering if anyone might know how to disable the cold junction reference on a Watlow 93 temperature controller.
I would like to use the controller to control the differential temperature in a heating system.
Thanks for any comments
disable cold junction compensation
Oct 16, 2006
4 Replies
Not specific to that particular controller, but if there's no firmware setting for it, you should probably be able to replace the sensor with a resistor.
Best regards, Spehro Pefhany
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You want to measure temperature rise over something? What are the two sensors connected to?
YEs
I would like to measure and control the temperature increase of glycol as it flows through the ice field in an ice rink. I will control the temperature increase by adjusting the flow rate of the glycol.
Replac>
Use RTDs. These are usually wound copper and are very common sensors for temperature control in pipelines. Don't use this Watlow controller - go to Honeywell etc and look for a real differential controller.
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