Looks like someone sent my email before I was done with it (can’t leave a computer open around the kids :-)
I was saying, it may be possible to fix what you have already. You can re-weld a thermocouple if it is bare and you have access the the joint between the conductors. I’ve done this quite a bit with a basic spot welder. If they are enclosed and shielded, it might be trickier. The thermocouple simply relies on the joint between two different types of metal. Creating a new joint can be done in a variety of ways. -Andy On Mar 8, 2015, at 10:10 AM, Mr Yum <[email protected]<mailto:[email protected]>> wrote: Thanks for the replies. They are Type K, shielded. The leads need to be about 20". Need two of them. Sounds like maybe it's an online-only buy... Yum "Dawes, Andrew M." <[email protected]<mailto:[email protected]>> wrote: For that range and application you are probably looking at a K-type, and as Jerry said, it will be way off if it is wrong. I haven't found them locally but have one or two around if you wanted to try it. Is the one you have a bare thermocouple (two conductors welded together at one end)? Or enclosed like a meat roasting thermometer? If it is a bare TC -- Andrew M.C. Dawes Assistant Professor of Physics Assistant Dean for Excellence in Teaching Pacific University amcdawes.com<http://amcdawes.com> On Mar 8, 2015, at 9:34 AM, Jerry Biehler <[email protected]> wrote: You need to know what type of thermocouple they are. There are about 10 different kinds, K, J, T, etc. If the wires are colored it will give a clue to their type. They are not interchangeable. Use the wrong one and your temperature will be way off. Polarity matters too. They could also be rtd and there are a couple types of those as well, pt100 and pt1000. -Jerry On Mar 8, 2015, at 8:49 AM, Mr Yum <[email protected]> wrote: Hey, We got a Huky coffee roaster that needs new thermocouples that are rated roughly 0-300C. Any place locally to buy these? TIA, Yum _______________________________________________ dorkbotpdx-blabber mailing list [email protected] http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber _______________________________________________ dorkbotpdx-blabber mailing list [email protected] http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber _______________________________________________ dorkbotpdx-blabber mailing list [email protected] http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber _______________________________________________ dorkbotpdx-blabber mailing list [email protected]<mailto:[email protected]> http://music.columbia.edu/mailman/listinfo/dorkbotpdx-blabber -- Andrew M.C. Dawes Associate Professor of Physics Pacific University amcdawes.com<http://amcdawes.com>
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