Electronics > Projects, Designs, and Technical Stuff
Temperature sensor technology
Teun:
Hi guys,
I'm looking for a temperature sensor/probe. BUT.... not just any sensor! One like this:
It came from a 40/50 year old watermixer in a bakery. Mixes hot and cold water ;D No (service)manuals or anything available on the device. Even the company that services them now doesn't have any info on it anymore. And told me a new one could cost me only €1800! :-DD
I think it is a pt100 or pt1000 like thing. But in case I am wrong about that. How do I find out what kind of sensor it is? Then I might be able to fabricate something.
Measured the resistance as an open circuit, so it's broken.
Haven't had much luck finding a replacement because of the rim it has, to be able to screw it in the waterpipe.
Someone know of things like these? Or can someone help me to at least find out what kind of sensor it is?
Thanks!
tszaboo:
Maybe it is a bimetallic switch. Heat it up, and see if it becomes short circuit.
Rerouter:
Time to take a file and crack that old one open if you really believe its not working.
Teun:
Well heating it up didn't cause a change in resistance in any case. I had already tried that.
tszaboo:
--- Quote from: Teun on May 04, 2020, 10:16:17 am ---Well heating it up didn't cause a change in resistance in any case. I had already tried that.
--- End quote ---
Maybe you can take a look at where it is connected. If it is a PT100, then it will have a bunch of electronics there, probably matched BJTs and such. Is the temperature adjustable on the dodad?
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