Humidity sensing apparatus and method

Details Humidity sensing apparatus and method Humidity sensing apparatus and method

1992-04-30

1994-11-22

McMahon, Timothy M.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

7333505, 374 16, 374 21, 374 28, 338 35, G01W 111

Patent

active

053657845

ABSTRACT:
The present invention is a humidity sensor which can be used in a radiosonde. The humidity sensor includes a heat sink attached to the radiosonde, a Peltier cooler attached to the heat sink, a carbon element with a thermistor attached therein or thereon, and a control means. The resistance of the carbon element is adjusted to a predetermined level to maintain a relative humidity of about 33, in particular. The control means monitors this resistance and adjusts the Peltier cooler accordingly. The thermistor responding to the temperature of the carbon element outputs a resistance indicative of the temperature on the sensor surface.

REFERENCES:
patent: 3926052 (1975-12-01), Bechtel
patent: 4080564 (1978-03-01), Nitta et al.
patent: 4626774 (1986-12-01), Regtien
patent: 4649736 (1987-03-01), Austin
patent: 4677416 (1987-06-01), Nishimoto et al.
patent: 4793181 (1988-12-01), Djorup
patent: 4793182 (1988-12-01), Djorup
patent: 4801211 (1989-01-01), Yagi et al.
patent: 4898476 (1990-02-01), Herrmann et al.
patent: 4911357 (1990-03-01), Kitamura

Affiliated with

Also associated with

Rating

Humidity sensing apparatus and method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Humidity sensing apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Humidity sensing apparatus and method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1983516