Thermocouple vacuum gauge

Details Thermocouple vacuum gauge Thermocouple vacuum gauge

2008-08-06

2011-11-01

Guadalupe-McCall, Yaritza (Department: 2841)

Thermal measuring and testing

Temperature measurement

Combined with diverse art device

C374S045000

Reexamination Certificate

active

08047711

ABSTRACT:
A thermocouple vacuum sensor is provided, the thermocouple being surrounded by a gas or mixture of gases the pressure of which is to be measured. Cyclically the thermocouple is heated until its temperature reaches an upper temperature threshold. The thermocouple is subsequently cooled until its temperature reaches a lower temperature threshold. The heating time required to heat the thermocouple from the lower to the upper temperature threshold is measured. The cooling time required to cool the thermocouple from the upper temperature threshold to the lower temperature threshold may also be measured. The pressure surrounding the thermocouple may then be determined as a function of either the heating time, or the cooling time, or both.

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patent: 1409963 (2007-12-01), None
Teledyne Hastings Instruments, Instruction Manual VT/CVT Series Vacuum Gauges and Controllers, Section 3.6, p. 14.

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