Method and device for measuring moisture content

Details Method and device for measuring moisture content Method and device for measuring moisture content

1993-06-11

1994-08-30

Dzierzynski, Paul M.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250341, 25022723, 356418, G01N 2149

Patent

active

053430450

ABSTRACT:
A device for measuring the moisture content of an absorbent material, for example the paper insulation in an electrical transformer, uses a back scattered radiation technique to determine the absorption of light at specific wavelengths. A ratio of the back scattered radiation at different wavelengths can be compared against known values corresponding to a specific moisture content. An optical waveguide such as a bifurcated optical fibre is provided with a probe end optically coupled to a source end and a detection end, for transmitting light to the absorbent material and transmitting back scattered radiation to a detector.

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