Fusionfire
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High temperature, high speed thermometer
Hi guys, I am looking for a thermometer capable of measuring at least 7000K for an event lasting under 1ms.
Does such a device exist?
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watson.fawkes
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A spectroscope and a camera with an adequate trigger will do it, but I don't know of a COTS (=commercial off-the-shelf) device that
you can just buy.
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dann2
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What response times have infrared (point and measure types) thermometers?
If there response times are very fast then it may be possible to obtain one with a electrical output that can be connected to a recorder, etc.
Don't know if they are availabe to go up to 7000K
Googleing "measureing very high very fast thermal events"
gives some reading.
http://www.flir.com/cs/emea/en/view/?id=53533
If you were to place an appropriate filter over an ordinary digital camera, set it up for shutter open (bulb), and have a narrow slit moving accross
the front of the lense at the appropriate time?
Would the brightness of the line in the image give a usable signal?
Just some guesses
Dann2
[Edited on 7-6-2012 by dann2]
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Twospoons
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I would have said 'spectroscope' too. Ordinary IR pyrometers are not that fast. At 7000K analysing the blackbody radiation via spectroscopy is the
method I would attempt.
Helicopter: "helico" -> spiral, "pter" -> with wings
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DoctorOfPhilosophy
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Spectroscope would be best for blackbody radiation, but 7000K for <1ms is probably plasma - that means the light spectrum will be coming from other
mechanisms and not very useful for measuring temperature. The FLIR microbolometer would suffer the same problem, and when I bought an infra-red
thermometer I was told not to point it at flames (no idea why).
I think temperatures in these cases are calculated theoretically. (e.g. when they say an atom bomb reaches X temp. for the first microsecond). If you
describe what you are trying to measure, perhaps someone can help you find a model to estimate the answer.
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Texium
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Thread Moved
20-11-2023 at 12:16 |
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