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Non-contact thermometers
Posted: 08 May 2015 11:55
by Ohio3Wheels
Any body have experience using a non-contact thermometer for checking the pot temps when casting. I have a Ryobi unit and am thinking of giving it try next time I heat a pot of metal. I have a Lyman analog thermometer i can compare it to. Wonder if anyone else has tried one.
Make smoke,
Re: Non-contact thermometers
Posted: 24 Nov 2015 19:17
by johnfrommd
Hi, new member, first post.
I have tried it and they don't work. Some one on the cast boolets forum explained why but it was pretty technical.
John
Re: Non-contact thermometers
Posted: 24 Nov 2015 19:38
by Okie44
Molten lead is too shiny.
Re: Non-contact thermometers
Posted: 24 Nov 2015 19:46
by Maximumbob54
The surface won't be the same temp as below surrounded by coils. No idea on why the unit wouldn't take a reading.
Re: Non-contact thermometers
Posted: 24 Nov 2015 20:02
by GasGuzzler
Like Okie and others have said, the refraction of the beam from the sheen goofs it.
Re: Non-contact thermometers
Posted: 26 Nov 2015 20:05
by parson48
Somebody posted about floating a penny on the surface of the melt as a focal point for using these thermometers.
I'm not vouching for the validity of this method, just passing it along.
Re: Non-contact thermometers
Posted: 27 Nov 2015 16:56
by Ohio3Wheels
If I can remember next time I heat the pot I'll give it a try.
Make smoke,
Re: Non-contact thermometers
Posted: 27 Nov 2015 17:48
by GasGuzzler
I'm going PID with help but I happen to have an infrared thermometer and even a penny so....
Re: Non-contact thermometers
Posted: 27 Nov 2015 18:07
by Ohio3Wheels
Wish I could find a reasonable way to control y gas pot with a PID. It would be nice.
Make boolits and smoke,
Re: Non-contact thermometers
Posted: 27 Nov 2015 20:48
by GasGuzzler
I use gas for smelting.