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Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > pid tempurature counting down??
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Old 08-04-2009, 04:09 AM   #1
kickflip_mj
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Default pid tempurature counting down??

so i bought 2 new K thermocouples for my pids.. whn they heat up they count down instead of up.. now i wired the red wires to positive and the whites to negative on the pid inputs... now my question is should i revers the wires to get them to read normal as in (heat up the readout goes up not down)?


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Old 08-04-2009, 04:16 AM   #2
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yes, you have the leads backwards.


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Old 08-04-2009, 04:45 AM   #3
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see thats what i thought.. so is the red wire hot? its just odd hw they were labeled. you should have seen me in my garage, i wanted to yell "what now god!!!"
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Old 08-04-2009, 05:42 AM   #4
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Quote:
so i bought 2 new K thermocouples for my pids.. whn they heat up they count down instead of up.. now i wired the red wires to positive and the whites to negative on the pid inputs...
Color code info.
ANSI color code for K type is RED and Yellow, J type is RED and White.


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Old 08-04-2009, 06:17 AM   #5
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so not to repeat but just switch them and i should be good?
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Old 08-04-2009, 11:11 AM   #6
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Quote:
Originally Posted by kickflip_mj View Post
so not to repeat but just switch them and i should be good?

Thats a 10-4 there.
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Old 08-04-2009, 02:36 PM   #7
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thanks once again guys, i really appreciate it.

Sawdust guy,

i wired my pid exactly how you drew it up a couple of weeks ago with the wall wort between the ssr and the pid and it works great except for my temp counting down. thank you
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Old 08-04-2009, 02:42 PM   #8
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Thermocouple color codes vary by country too so don't trust squat. US made K types have a negative red, but the ones Auber sells are imported so the red is positive. If one of the leads on your thermocouple is ferrous (K types are), it's easy enough to identify the negative lead with a magnet.
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Old 08-05-2009, 09:41 AM   #9
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Quote:
Originally Posted by kickflip_mj View Post
thanks once again guys, i really appreciate it.

Sawdust guy,

i wired my pid exactly how you drew it up a couple of weeks ago with the wall wort between the ssr and the pid and it works great except for my temp counting down. thank you
I am happy I could help. Keep up the good work.


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