Hi guys, I am looking for a thermometer capable of measuring at least 7000K for an event lasting under 1ms.
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.dann2 - 7-6-2012 at 11:32
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.
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]Twospoons - 7-6-2012 at 13:55
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.DoctorOfPhilosophy - 22-6-2012 at 18:03
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.
