Method of measurement of relative humidity, in particular in rad

Details Method of measurement of relative humidity, in particular in rad Method of measurement of relative humidity, in particular in rad

1994-08-23

1996-01-23

Williams, Hezron E.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73 2901, 73 2902, 427 79, G01N 2556, G01W 100

Patent

active

054857473

ABSTRACT:
Method, in particular in radiosondes, for measurement of relative humidity by using a capacitive humidity detector (10) or a combination of detectors (10.sub.1, 10.sub.2 ; 10P), as well as humidity detectors. In the detector, between the capacitor plates, an insulating material (12) is used, whose permittivity is a function of the amount of water absorbed by the insulating material (12). The detector (10) or the combination of detectors is heated in order to remove any ice, frost or condensed humidity deposited on the face and/or in the environment of the detector. The detector capacitance (C.sub.M) or a part (C.sub.1 . . . C.sub.N) of same is heated, in time and/or in place, periodically by means of electric current (I). The detecting of the detector capacitance (C.sub.M) is carried out without measurement of the detector temperature after the detector capacitance or a part (C.sub.1 . . . C.sub.N) of same has cooled down substantially to the temperature of the environment.

REFERENCES:
patent: 3075385 (1963-01-01), Stover
patent: 3168829 (1965-02-01), Nelson
patent: 3350941 (1967-11-01), Misevich
patent: 3559456 (1971-02-01), Lomker et al.
patent: 4011538 (1977-03-01), Froemel
patent: 4482581 (1984-11-01), Lorin et al.
patent: 4603455 (1986-08-01), Woest et al.
patent: 4723439 (1988-02-01), Asakura et al.
patent: 4931897 (1990-06-01), Tsukamoto et al.
patent: 5036704 (1991-08-01), Pusatcioglu et al.
patent: 5048336 (1991-09-01), Sugihara et al.
patent: 5296819 (1994-03-01), Kuroiwa
English Abstract for DE 3911812, Derwent WPI.
English Abstract for DE 3923595, Derwent WPI.

Affiliated with

Also associated with

Rating

Method of measurement of relative humidity, in particular in rad 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 of measurement of relative humidity, in particular in rad, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of measurement of relative humidity, in particular in rad will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1498650