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Author: Subject: Hacking up a 2000C-3000C pyrometer?
3DTOPO
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[*] posted on 18-4-2016 at 15:05
Hacking up a 2000C-3000C pyrometer?



It is quite expensive to buy a infrared pyrometer capable of measuring over ~1000C.

I have an idea for making one out of an inexpensive 1000C rated pyrometer. What do you think would happen if I put a welding glass over its sensor? Or acetylene smoked glass?

Seems like after covering it, I could "calibrate" it with materials of a known melting temperature. Would it work in reliable linear way if I had two calibration points? e.g. melt iron for point one and titanium for point two?

Any thoughts/ideas? Thanks!
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3DTOPO
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[*] posted on 18-4-2016 at 18:53


Limiting the aperture seems to do the trick - with my first crude test. Something it says is 430F without the mask reads 300F with the mask.

I will try 3D printing an accurately sized one. Perhaps if I use say half the factory calibrated aperture, I could then just double the values of the readout?!?

I follow up after more experiments.

XB7A3547.jpg - 339kB
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yobbo II
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[*] posted on 19-4-2016 at 07:52




Perhaps if you attach an optical fiber the the device it would act a an accurate hole and also make the device more easy to use as you are now placing the end of a fiber at the temperature source. You would probably need a lens though at the fiber end would would not be so simple to do.

http://www.explainthatstuff.com/how-pyrometers-work.html

The 'manual' pyrometer sounds good but they say it needs regular calibration and skill to use.
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yobbo II
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[*] posted on 19-4-2016 at 13:56



http://www.metallab.net/pyrometer.php

Homemade hot wire pyrometer.

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