Monday, May 13, 2013

Thermometer Question

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fordfan is offline Boolit Bub Join DateJan 2013Posts40

What would be the best way to test my thermometer to see if it is showing a true and accurate reading? When I stick it in the molten lead the needle jumps and jerks as it starts to climb and when it is sitting on the bench for a while lets say overnight like after a casting session, I would think it should be reading room temp and it does not, any ideas thanks.
Glass full of ice with water in it. Let it sit for a few minutes. Temp should read 32 degrees.
Glass full of ice with water in it. Let it sit for a few minutes. Temp should read 32 degrees.But that's at the other end of the spectrum, I'd try it in boiling water just as it's beginning to boil, to see if it's at 212.
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fordfan is offline Boolit Bub Join DateJan 2013Posts40
Thanks guys I'll give both of these a try. If it is off do I get a new one or can they be adjusted some how?
If it is off do I get a new one or can they be adjusted some how? Depends on the thermometer. Some like the Tel-Tru's the hex nut can be rotated to set the dial at the correct tested temperature while in the water.
Here's a write that explains the process fully with pictures
http://nfsmi.org/documentlibraryfiles/PDF/20080215082829.pdf
fordfan is offline Boolit Bub Join DateJan 2013Posts40
Thanks John Boy that will help alot.
Please note: 212- and 32-degree benchmarks are correct only at specific altitude. I'm confident there will be a reference site that will identify benchmark temperature adjustment for your altitude.

Hope this helps.

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