Resistance thermometer and linearization circuitry

Details Resistance thermometer and linearization circuitry Resistance thermometer and linearization circuitry

1983-08-09

1985-12-03

Yasich, Daniel M.

Thermal measuring and testing

Temperature measurement

By electrical or magnetic heat sensor

307310, G01K 718

Patent

active

045563306

ABSTRACT:
The resistance thermometer comprises a temperature dependent measuring resistor (10) and a measuring circuit (11) for measuring the voltage drop at the measuring resistor which is produced by a current (I) flowing across the measuring resistor (10). The measuring resistor (10) lies in the feedback circuit of an operational amplifier (A.sub.1) whose inverting input is applied via a resistor (21) to a constant reference voltage (E). To linearize the characteristic of the measuring circuit a voltage (k.U.sub.T) is applied to the non-inverting input of the operational amplifier (A.sub.1), which voltage is in a predetermined ratio (k) to the output voltage (U.sub.T) of the measuring circuit (11).

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patent: 4363556 (1982-12-01), Belliveau et al.
patent: 4380155 (1983-04-01), Paddock et al.

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