Timeline for Is it wise to determine heating element temperature from resistivity?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Jan 11 at 3:49 | comment | added | Spehro 'speff' Pefhany | You may have some luck with pottery supply places. R and S is rare in North America hobby work, because of cost (though long term it is not more expensive) but not so much in other places, as I understand it. | |
| Jan 11 at 3:47 | comment | added | TrisT | Therma doesn't seem to have anything above K/J (perhaps on request), but they apparently only focus on selling to companies either way. Cole-Parmer seems to have some (very expensive) R and S types but they're still only rated for 1150C(2100F). I found omega before you mentioned, so I looked a little harder - availability changes with country but looking at germany, france and spain it seems at least the tungsten-rhenium wire pairs are consistently available at a reasonable price. I'll also check local places but I imagine they'll tell me to take a walk. | |
| Jan 10 at 15:04 | comment | added | Spehro 'speff' Pefhany | Should be Cole-Parmer. | |
| Jan 10 at 8:48 | comment | added | Spehro 'speff' Pefhany | There are many. For example, this one: thermagmbh.de/en/thermocouples as well as US (?) companies such as Cole-Palmer and Omega. Material suppliers are fairly thick on the ground too, but I suspect you want a complete product. | |
| Jan 10 at 8:06 | vote | accept | TrisT | ||
| Jan 10 at 8:06 | comment | added | TrisT | Damn what an amazing answer. The furnace was gonna be closed which is why controlling the temperature of the element was roughly enough, and I had an idea in mind for getting rid of the oxygen - but the eroding part throws a massive wrench in the works. That is what I was missing. But hey I just learned about the existence of the optical pyrometer, maybe eventually I can make sapphire windows and measure with light. Any advice on where to find these platinum-rhodium thermocouples? Ebay search yields weird ones with a pink 'handle' but can't find much anywhere else, especially in the EU. | |
| Jan 10 at 6:41 | history | edited | Spehro 'speff' Pefhany | CC BY-SA 4.0 |
added 19 characters in body
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| Jan 10 at 6:31 | history | answered | Spehro 'speff' Pefhany | CC BY-SA 4.0 |