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Old 11-05-2007, 08:58 PM   #1
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Default Thermocouple or thermocouple wire source?

Where did you DIYers who use thermocouples or thermocouple wire get yours? I find that shipping tends to be really expensive on such a little thing. Better yet -- any of you have a coil of thermocouple wire sitting around that you want to snip an end off and throw in an envelope? I'd happily paypal ya a couple of bucks....


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Old 11-05-2007, 09:47 PM   #2
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What type are you looking for? I'm back on the nightshifts tomorrow, but I may be able to root some up. Can get some in 9 days for sure when I'm back on the days.


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Old 11-06-2007, 01:43 AM   #3
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Awesome! I can use almost any type: J, L, K, T, E or N should all work. I'm using (or at least trying to use) a Love 16120 controller to modulate a fermentation fridge. Thanks!
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Old 11-06-2007, 03:54 AM   #4
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Have you looked on Ebay for thermocouples yet?, extending thermocouple leads with dissimilar metal wiring can create some interesting results. Best to look for a thermocouple with leads long enough to reach controller without junctions unless you want to invest in plugs or terminal blocks for the type of thermocouple you are using.
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Old 11-06-2007, 11:45 AM   #5
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Quote:
Originally Posted by kladue
Have you looked on Ebay for thermocouples yet?, extending thermocouple leads with dissimilar metal wiring can create some interesting results. Best to look for a thermocouple with leads long enough to reach controller without junctions unless you want to invest in plugs or terminal blocks for the type of thermocouple you are using.
Not only that, but you should not cut the leads on any thermocouple you do get. They are calibrated with that length of wire, so any changes will throw off the reading.
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Old 11-06-2007, 12:44 PM   #6
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Quote:
Originally Posted by JoeRags
Not only that, but you should not cut the leads on any thermocouple you do get. They are calibrated with that length of wire, so any changes will throw off the reading.
Better re-check your theory on that one.
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Old 11-06-2007, 01:04 PM   #7
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Quote:
Originally Posted by mr x
Better re-check your theory on that one.
care to enlighten me?
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Old 11-06-2007, 01:28 PM   #8
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You can cut thermocouples. They are usually sold on large rolls that you cut to what ever size you need.
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Old 11-06-2007, 01:34 PM   #9
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Guess you learn something new every day!

I've only purchased TC's for automotive pyrometers. They typically advise against shortening of the wire for these applications.
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Old 11-06-2007, 01:41 PM   #10
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That's looks like a specialized application. I've never heard of one of those, but in that case, I would say it's best to follow the manufacturer's instructions. Generally speaking, standard type thermocouple wire comes in massive rolls (to industrial users) and you cut is as you see fit.


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