Laser Thermometer ( Review )

36 posts / 0 new
Last post
Agro
Agro's picture
Offline
Last seen: 17 hours 19 min ago
Joined: 05/14/2017 - 11:16
Posts: 6737
Location: Ślōnsk

Indeed. Though it would be good to have a regular OK quality thermometer inside to make sure the oven actually delivers the temperature it shows.

Agro
Agro's picture
Offline
Last seen: 17 hours 19 min ago
Joined: 05/14/2017 - 11:16
Posts: 6737
Location: Ślōnsk

Though why not measure them at room temperature?

hIKARInoob
hIKARInoob's picture
Offline
Last seen: 1 hour 38 min ago
Joined: 08/28/2016 - 08:15
Posts: 4185

Oh that makes sense of course. But perhaps you get more deviation with higher temperature?

Agro
Agro's picture
Offline
Last seen: 17 hours 19 min ago
Joined: 05/14/2017 - 11:16
Posts: 6737
Location: Ślōnsk

We’re moving about topics far outside of my knowledge…but quickly seeking I found 2 effects:
Surfaces also reflect some IR light from their surroundings, in this test it would be noise. Maybe measuring mirror would tell us something about the noise floor? Anyway, moving up in temperature would certainly reduce the effect of reflection.

Also I see that radiant power is proportional to the fourth power of temperature, so even modest increase would bring the results further apart. Not sure if it matters though.

Agro
Agro's picture
Offline
Last seen: 17 hours 19 min ago
Joined: 05/14/2017 - 11:16
Posts: 6737
Location: Ślōnsk

BTW I noticed there are 2 different thermometers named GM320:

The latter has adjustable emissivity and is the cheapest thermometer with that feature that I’ve seen, under $9. It is also named AN320 sometimes.

Pages