Method and apparatus for determining moisture content of materia

Details Method and apparatus for determining moisture content of materia Method and apparatus for determining moisture content of materia

1992-04-16

1993-06-15

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

250341, 250353, G01N 2135

Patent

active

052201686

ABSTRACT:
Method and apparatus for determining moisture content of materials by irradiating a sample of unknown moisture content with a narrow frequency band of light at a first wavelength during a first time period and a narrow frequency band of light of a second wavelength during a second time period. The two wavelengths of light have different water absorptive characteristics, and therefore are reflected by varying degrees depending on the surface moisture on the material. The respective reflections are measured by a single common detector, and a value corresponding to the ambient light is subtracted from each measurement. A ratio of the resultant values is then correlated with data derived from precalibration measurements of samples of known moisture content.

REFERENCES:
patent: 4286327 (1981-08-01), Rosenthal et al.
patent: 4755678 (1988-07-01), Izatt et al.
patent: 4857735 (1989-08-01), Noller
patent: 5017787 (1991-05-01), Sato et al.

Affiliated with

Also associated with

Rating

Method and apparatus for determining moisture content of materia does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for determining moisture content of materia, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining moisture content of materia will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1045253