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Rough environment rotation speed sensor

Former Member

Hello altogether,

 

I want to measure the rotation speed of a auxiliary fan which is enclosed in a duct pipe system.

There will be humidity and steam from boiling water (can compare to cooking on a gas hob in the kitchen)

 

The fan blades are made of plastic.

 

I was recommended to use an optical sensor, but I am worried that the steam will interfere.

 

Has anybody experience with something like this and can recommend a certain type of sensor or maybe even a special product?

 

Thanks guys!

Parents Reply
  • in reply to tekmeister

    Thanks for the feedback Tekmeister

     

    I would need to attach the magnet to the blade, which would bring the fan out of balance.

    Although placing 3 or more magnets 120º each could solve this, the fan performance/airflow would be influenced. As this is a fan to be run at a determined airflow, the magnets would spoil the function.

     

    Are there other ideas?

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