Combination absolute and differential temperature system

Details Combination absolute and differential temperature system Combination absolute and differential temperature system

1980-03-31

1981-08-11

Woodiel, Donald O.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73362AR, G01K 718

Patent

active

042827531

ABSTRACT:
The measurement of small differential temperatures over a wide range of absolute temperatures is accomplished by cyclically switching the excitation polarity to a bridge circuit including the temperature sensors. Additionally, the measuring circuitry includes a differential-differential amplifier configuration and a pair of compensating conductors in the cable to each sensor to achieve equal resistance in each excitation path.

REFERENCES:
patent: 3181364 (1965-05-01), Barton
patent: 3882725 (1975-05-01), Rao et al.
patent: 3950991 (1976-04-01), Grass
patent: 4143549 (1979-03-01), Koehler
patent: 4201088 (1980-05-01), Trietley, Jr.

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