Emissivity Setting Problems for Raytek 3i series IR Guns on Steel
Emissivity Setting Problems for Raytek 3i series IR Guns on Steel
(OP)
I work in the Forging industry and I am having an issue where Raytek 3i series Model 2ML3 IR guns are consistantly giving low temperature readings (such as 975 F when the actual temperature is 1200F) accross all grades and temperature ranges. [The actual temperature is measured by a surface welded thermocouple]
Case Example: Grade 1026
Welded thermcouple reads 1200F
Fluke Model 68 IR Gun read 1200F with an emissivity setting of .92
Raytek gun at the same emissivity setting gives a temperature of 975 F, to get an accurate readout of 1200F I had to input an emissivity setting of .65.
Both the Raytek and Fluke IR guns were used from the same distance at the same spot simultaniously.
Any thoughs on what the problem is here? Why is the Raytek IR gun reading so low?
Case Example: Grade 1026
Welded thermcouple reads 1200F
Fluke Model 68 IR Gun read 1200F with an emissivity setting of .92
Raytek gun at the same emissivity setting gives a temperature of 975 F, to get an accurate readout of 1200F I had to input an emissivity setting of .65.
Both the Raytek and Fluke IR guns were used from the same distance at the same spot simultaniously.
Any thoughs on what the problem is here? Why is the Raytek IR gun reading so low?





RE: Emissivity Setting Problems for Raytek 3i series IR Guns on Steel
TTFN
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RE: Emissivity Setting Problems for Raytek 3i series IR Guns on Steel
RE: Emissivity Setting Problems for Raytek 3i series IR Guns on Steel
When was calibration last done?
RE: Emissivity Setting Problems for Raytek 3i series IR Guns on Steel
RE: Emissivity Setting Problems for Raytek 3i series IR Guns on Steel
Does it matter how clean the surface is.
I had various guns once and one of them only liked more heavily oxidized surfaces. That is when I gave up and went to multi-band ratio devices.
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Plymouth Tube
RE: Emissivity Setting Problems for Raytek 3i series IR Guns on Steel
In either case, you already know that it needs to be fixed, presumably, by Raytek. The only unknown is whether you're going to do it or not. What more is there to know?
TTFN
FAQ731-376: Eng-Tips.com Forum Policies
RE: Emissivity Setting Problems for Raytek 3i series IR Guns on Steel