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Thread: [PIC]: How to measure level of liquids and senserelativehumidity?
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face BY : Mike Witherden email (remove spam text)



1 ¸ c worth:  

Dual band Infra Red transducers would also work and can be calibrated very accurately.
The absorption and reflection of Infra Red by a substance is greatly affected by the
substances water content. Using 2 bands of Infra Red improves the effect.

MikeW


.......
The normal method of measuring effective humidity in wood, concrete, sand,
etc., is by conductivity.
......

<s93b9ecb.012@wpogate.mlsultan.ac.za>

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