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I want to measure the velocity of hot gas coming out from an incinerator. The temperature can easily shoot upto 400-500ºC. I've checked online for hot-wire anemometers, even they claim to work in the range of 0-50 ºC or 0-70ºC. Moreover they are dearly expensive. Can someone suggest a good and reliable solution?

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  • $\begingroup$ Can you add What is the accuracy/tolerance for the results? $\endgroup$ – Gürkan Çetin Jul 15 '17 at 13:59
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Use a pitot tube made of a suitable metal and measure the profile across the pipe.

Did a lab experiment like this years ago to measure the flow profile before and after an axial flow fan.

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