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Any suitable humidity sensors for +125 degree C environment

BigG

I am looking for a suitable low-cost humidity sensor for a "wearable" battery operated (low voltage / low power consumption) application within a high temperature (+125 degree C could reach +150 degrees) environment. The aim is monitor drying conditions within an industrial hot air dryer type operation which is drying wet objects. High temperatures would last from about 20mins up to 90mins. Electronics + alkaline or coin cell battery thermally insulated in suitable casing (just in case).

 

Any suggestions.

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  • Hi BigG : ) Interesting use-case : )

     

    I wonder if (say) you have a small chamber with holes, and some cloth inside it, and a deliberate heater (say a PCB with pattern etched), which turned on (say) every five minutes, and heated the cloth. If the cloth was wet, then it would give off steam, which would cause some PCB with meshing 'tongues' design to conduct due to condensation. It would only need to turn on the heater if it wasn't already conducting, so perhaps the battery could still last long enough. I think you've got a great application for a commercial product..

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  • Hi BigG : ) Interesting use-case : )

     

    I wonder if (say) you have a small chamber with holes, and some cloth inside it, and a deliberate heater (say a PCB with pattern etched), which turned on (say) every five minutes, and heated the cloth. If the cloth was wet, then it would give off steam, which would cause some PCB with meshing 'tongues' design to conduct due to condensation. It would only need to turn on the heater if it wasn't already conducting, so perhaps the battery could still last long enough. I think you've got a great application for a commercial product..

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