Humidistat

Details Humidistat Humidistat

1975-05-23

1979-04-24

Ciarlante, Anthony V.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

733375, G01W 100

Patent

active

041505719

ABSTRACT:
An humidistat has an element movable in response to ambient relative humidity operatively connected to a core of a linearly variable differential transformer for moving the core. The core is supported within a body portion of the transformer for minimal friction of movement relative to the body portion. The body portion has a primary winding and two secondary windings. An oscillator excites the primary winding to provide output signals from the secondary windings proportioned to movement of the core in the body portion and, therefore, indicative of the relative humidity sensed by the element.

REFERENCES:
patent: 1961012 (1934-05-01), Platzer
patent: 2467929 (1949-04-01), Colt
patent: 2767973 (1956-10-01), Terveen et al.
patent: 3756080 (1973-09-01), Young
W. Ryland Hill, Electronics in Engineering, McGraw-Hill Book Co., Inc., 1961, pp. 303-304.

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