Data acquisition system and analog to digital converter therefor

Details Data acquisition system and analog to digital converter therefor Data acquisition system and analog to digital converter therefor

1982-06-17

1985-07-09

Zache, Raulfe B.

Boots, shoes, and leggings

324105, 374 1, G01K 716

Patent

active

045286370

ABSTRACT:
An RTD bridge is coupled with a microprocessor-based data acquisition system for linear reading of temperature and for accuracy at the level of the precision data acquisition system. A reference divider is paralleled with the RTD bridge between a voltage reference source and ground, and linearization is effected in accordance with a function which is a geometric progression of the measured non-linear count. Calibration is effected in one embodiment with a precision divider, or with the bridge itself by making readings at the lowest and at the highest temperature intended with the bridge, according to another embodiment of the invention.

REFERENCES:
patent: 3905229 (1975-09-01), Togo et al.
patent: 4102199 (1978-07-01), Tsipouras
patent: 4349821 (1982-09-01), Vancsa
patent: 4380757 (1983-04-01), Vancsa
Technischessen 38-1981 (4), pp. 27-130, "Multichannel Temperature Measuring Device for Pt. 100 Resistance Thermometers", W. Corius.

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