Is the HDR200 able to measure RH, Dew Point & Temp in-situ exhaust air that flux's between 120~350 degrees F
HR200 Humidity Transmitter/Meter for High Temperature and High Pressure Environments
Hoping to use this unit to accurately measure the dew point or RH of hot/humid exhaust air from a fluid bed dryer, as a way to then track the dryness of the spent grain material that is traveling thru the dryer at a 'constant' (controllable) rate.
Current measurements show that once at steady state, the exhaust temp is nominally around 130-175* F, though during start-up and shutdown, temps reach 350+ *F.... data would not be needed during these times, but the equipment will have to withstand those temperatures, maximum of 400*F
Thank you!
Status:
Open Nov 13, 2025 - 02:59 PM
1answer
Answer
Nov 20, 2025 - 08:51 AM
The HDR200 is rated for up to 200°C(392°F) so it is hard to say if going above the rated temperature even for a short time will be a problem. I may possibly even damage the unit. If the temperature stays below 392°F it should be okay but we generally don't recommend prolonged operation at the maximum temperature as it will shorten the life of the sensor.
The other concern is steam. The HDR200 is not recommended for applications where it will be exposed to steam since the steam will also damage the sensor.
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