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Old 11-08-2009, 06:53 PM   #1
ShortSnoutBrewing
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So the wires on my probe came loose from the housing. Anyone know which it + and which is -? There's a yellow and a red.

 
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Old 11-09-2009, 02:01 AM   #2
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Quote:
Originally Posted by Kilted Brewer View Post
So the wires on my probe came loose from the housing. Anyone know which it + and which is -? There's a yellow and a red.
If I were to guess the red is the (-) and the yellow is the (+). You would know right away if they were hooked up wrong. If they were hooked up backwards the thermcouple would indicate a falling temperature when the temperature is indeed rising and vice versa.
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Old 11-09-2009, 03:46 AM   #3
kladue
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Here is a PDF chart that should help http://www.thermalcorp.com/documents/TCCHART.pdf

 
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Old 11-09-2009, 03:59 AM   #4
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Great chart Kevin! Yup, looks like the red is (-).
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Old 11-09-2009, 04:25 AM   #5
kladue
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We go through a bit of the K thermocouple wire on the steam power generation jobs for thermal stress relieving, spot weld the wires to the pipe and attach to the heating controllers. You dont want a weld failure in a system that boils nearly 1 million pounds of water an hour @2,000 PSI-1,000 deg F. for a 450 Mw steam turbine-generator set.

 
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