Thermal measuring and testing – Transformation point determination – Between gaseous and liquid states
Patent
1985-05-20
1986-04-01
Frankfort, Charles
Thermal measuring and testing
Transformation point determination
Between gaseous and liquid states
374 16, 374 25, G01N 2568
Patent
active
045794626
ABSTRACT:
Apparatus for determining the relative humidity of an atmosphere by measuring the dew point of the atmosphere. The dew point is measured by lowering the temperature of a condensing or sensing surface associated with a heat flow sensor. When condensation begins to occur this is detected by the heat flow sensor as a change in the rate of heat flow through the condensing surface. In one embodiment a pair of heat flow sensors are employed, one maintained at a slightly lower temperature than the other. The sensors are connected in series opposition so that output signals due to background or convective heat transfer are cancelled, any change in the combined output signal of the two sensors then indicating heat flow resulting from condensation. The temperature of the cooler face will be the dew point temperature. Two arrangements of sensors are disclosed.
REFERENCES:
patent: 1986529 (1935-01-01), Ray
patent: 2316624 (1943-04-01), Romanelli
patent: 2415776 (1947-02-01), Walton
patent: 2588355 (1952-03-01), Burr et al.
patent: 2680371 (1954-06-01), Donath
patent: 2904995 (1959-09-01), Obermaier
patent: 3134259 (1964-05-01), Hallmarken
patent: 3177716 (1965-04-01), Warman
patent: 3280618 (1966-10-01), Ballinger
patent: 3283561 (1966-11-01), Fricke
patent: 3293901 (1966-12-01), Van Scoyoc et al.
patent: 3396574 (1968-08-01), Hanlein
patent: 3491583 (1970-01-01), Roussel et al.
patent: 3589169 (1971-06-01), Lafitte et al.
patent: 4028942 (1977-06-01), Gardiner
patent: 4276768 (1981-07-01), Dadachanji
patent: 4408568 (1983-10-01), Wynnyckyj et al.
Hornbaker David R.
Rall Dieter
Frankfort Charles
Trans-Met Engineering, Inc.
Will Thomas B.
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