High precision electronic digital thermometer

Details High precision electronic digital thermometer High precision electronic digital thermometer

1995-04-03

1997-08-12

Bennett, G. Bradley

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

374 1, 374168, G01K 724

Patent

active

056553056

ABSTRACT:
A microprocessor controlled high precision electronic digital thermometer which is capable of producing highly accurate temperature readings while using relatively inexpensive components. The digital thermometer of the invention uses a thermistor probe to obtain highly accurate temperature measurements which may be obtained over an extended temperature range. The digital thermometer of the invention is constructed in a manner such that by using relatively inexpensive stable resistors in a bridge, highly accurate temperature readings may be obtained by rapid calibration and recalibration of the bridge in order to obviate the need for expensive precision resistors in the bridge circuit itself.

REFERENCES:
patent: 3933046 (1976-01-01), Ebrecht
patent: 4000454 (1976-12-01), Brakl
patent: 4528637 (1985-07-01), Smith
patent: 4536851 (1985-08-01), Germanton et al.
patent: 4537516 (1985-08-01), Epstein
patent: 4713783 (1987-12-01), Fletcher

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