Annealing - Infrared non contact thermometer

[Martin52]

I read a post somewhere recently regarding the use of an infrared non contact thermometer as an alternative to Tempilaq - just wondering whether anyone has any comment ?

Here's one example:

http://www.ebay.com/itm/Infrared-Th...ontact-Temperature-Laser-1050-C-/121117825325

Martin

 

[zipollini]

Won't work. While the aiming laser is quite small the actual measuring area is way too big. Been there done that.

 

[Dusty Stevens]

And the brass is either in the flame or cooling off fast- both are false readings

 

[mikecr]

Research thermography. It's complicated and difficult to pull off with accuracy.

 

[CharlieNC]

Ditto no go on this. I even tried blackening a case to reduce reflectivity with little improvement.

 

[Martin52]

Thanks guys, good to hear of your experiences.

 

[Webster]

Thanks guys, good to hear of your experiences.

I mentioned on this website I was using a Harbor Freight infra red pyrometer for my lead pot. Someone commented that a pyrometer has to be calibrated for the emisssivity of the material your checking. I have no idea what the error is. Anyhow others have pointed out you cannot measure thru a flame. If you remove the case from the flame it is cooling at about 100F/sec.

 

[missed]

Contact pyrometer is best right as it's out of the flame.

 

[Martin52]

If you remove the case from the flame it is cooling at about 100F/sec.

thanks, from this and other comments, sounds impractical..

 

[Brians356]

I have one, tried it for annealing, it is not appropriate for the purpose. It's better for monitoring the temperature of your barrel.
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[Twoboxer]

I have one, tried it for annealing, it is not appropriate for the purpose. It's better for monitoring the temperature of your barrel.
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While I agree it doesn't work for annealing, I wasn't happy with the results mine gave for monitoring barrel temperature either.

Instead, I use temperature monitoring adhesive strips like these http://www.omega.com/pptst/RLC-50.html . The only issues with them are (a) getting them to stick . . . need to thoroughly de-grease the barrel at the attachment point . . . and (b) not so easy to use on AR platforms.

 

[waldo1979]

I read a post somewhere recently regarding the use of an infrared non contact thermometer as an alternative to Tempilaq - just wondering whether anyone has any comment ?

Here's one example:

http://www.ebay.com/itm/Infrared-Th...ontact-Temperature-Laser-1050-C-/121117825325

Martin

They don't work for some metals, in particular brass. I'm on the John induction mailing list and post number one I was advised against using one. can't remember the specifics but maybe due to refraction.