Internal temperature reference circuit for electronic thermomete

Details Internal temperature reference circuit for electronic thermomete Internal temperature reference circuit for electronic thermomete

1974-05-28

1976-08-03

Aegerter, Richard E.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

G01K 720

Patent

active

039722368

ABSTRACT:
In an electronic thermometer system having an electronic thermometer unit and a temperature sensing probe unit having an electrical characteristic which varies as a function of the temperature to which it is exposed, an internal temperature reference circuit including a probe matching circuit having the same characteristic matched to that of the probe unit at a predetermined test temperature and a switching mechanism for selectively interconnecting the probe unit and probe matching circuit with the thermometer unit.

REFERENCES:
patent: 2938385 (1960-05-01), Mack et al.
patent: 3377862 (1968-04-01), Gheorghiu
patent: 3530718 (1970-09-01), Ehlo
patent: 3872728 (1975-03-01), Joyce et al.

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