G - Physics – 01 – L
Patent
G - Physics
01
L
73/61
G01L 21/14 (2006.01)
Patent
CA 1273225
Abstract of the Disclosure A thermocouple pressure gauging system for measuring partial vacuum is provided which uses AC current to heat the thermocouple to constant tem- perature. A signal proportional to pressure is derived from the AC current needed to heat to constant temperature.
514954
R. William Wray & Associates
Varian Inc.
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