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Old 03-22-2011, 02:50 AM   #1
bizybrewer
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Default Problem with Thermocouple

I have recently built the po man's electric brew rig and am having problems with my new thermocouple. It is a K type thermocouple that is hooked into a T on the mash tun valve. It is hooked up to an led readout, but i am getting weird readings. When I start up the led it gives me a wrong temperature reading, and then slowly starts to increase. I left it on overnight and came back the next morning only to find it reading 500 degrees! I tried to do some research on the internwebs but couldn't find anything. Any ideas?


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Old 03-22-2011, 02:57 AM   #2
samc
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You need to provide some details, like type of PID or device reading the thermocouple. Model numbers, etc. Did you set it to read a K type?


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Old 03-22-2011, 03:03 AM   #3
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Yes, it is a K type

Here is a link to the thermo:
http://cgi.ebay.com/ws/eBayISAPI.dll...=STRK:MEWNX:IT

and here is one to the readout:
http://cgi.ebay.com/Digital-DC-Tempe...item3a642e76bc

These didn't come with any instructions or anything.

In hindsight i should have just bought a PID with a SSR, but oh well.
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Old 03-22-2011, 03:14 AM   #4
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Doesn't look like you have any calibration or input choices on that thing. I'd say check the probe with a meter but I wouldn't have a clue what it should read as there are many types of K thermoprobes.

It might be a case of you get what you paid for. Maybe someone will have an answer.
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Old 03-22-2011, 04:26 PM   #5
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Did you get your polarity correct on the thermocouple?

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Old 03-22-2011, 04:44 PM   #6
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yeah, i tried both ways, which both give different but the wrong temperatures
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Old 02-17-2012, 06:20 PM   #7
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Did you ever get this working? I'm interested in making a cheap digital thermometer with this, but not if it is worthless junk. They don't give much info in the listing.

Is it possible there is a way to calibrate it?
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Old 02-17-2012, 06:22 PM   #8
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Nope, unfortunately I never did. I cant remember if there is a way to calibrate. I don't think so.


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