Direct reading temperature measuring bridge circuit

Details Direct reading temperature measuring bridge circuit Direct reading temperature measuring bridge circuit

1975-02-21

1977-08-30

Queisser, Richard C.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

323 75L, G01K 720, G05F 300

Patent

active

040446131

ABSTRACT:
An a.c.-fed temperature measuring bridge in the form of a balanced Wheatse bridge containing a temperature sensor R(.theta.) which, depending upon the measured temperature .theta., generates an output voltage which is balanced by a variable voltage y provided by ohmic ratio arms in such a way that if the sensor R(.theta.) has a non-linear characteristic, there will still be a linear relationship such that .theta. = const..sup.. y, the inventive feature being that the fixed ratio arms of the balanced Wheatstone bridge are formed by an inductive potential divider and that for correcting the non-linearity of the sensor the voltage across the variable ohmic ratio arms is a predetermined ratio (O.sub.3) of the voltage feeding the bridge.

REFERENCES:
patent: 2659234 (1953-11-01), Harrison
patent: 2777326 (1957-01-01), Schwieg et al.
patent: 3225297 (1965-12-01), Burley et al.
patent: 3230772 (1966-01-01), Leslie et al.
patent: 3548295 (1970-12-01), Borer
patent: 3613454 (1971-10-01), McFadin
patent: 3688581 (1972-09-01), LeQuernec
patent: 3742764 (1973-07-01), Dauphinee

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