Method and apparatus for measuring the amount of moisture that i

Details Method and apparatus for measuring the amount of moisture that i Method and apparatus for measuring the amount of moisture that i

1975-06-12

1977-02-01

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250341, 356 51, G01J 334, G01N 2134

Patent

active

040063585

ABSTRACT:
An improved method and apparatus for measuring the moisture contained by a moving sheet of web material includes a water simulating filter in a typical dual wavelength moisture gauge which provides transmission ratios. The relationship between the change of ratios of various samples of the material with different moisture content with the change of the filter ratios when various layers of moist dirt are placed in the gauge transmission path is used to provide a corrected transmission ratio from which water weight can easily be determined. The method is also applicable to polymer coatings or similar substances.

REFERENCES:
patent: 3614450 (1971-10-01), Hill et al.
patent: 3790796 (1974-02-01), Brunton et al.
patent: 3803414 (1972-08-01), Van Horne et al.

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