Temperature compensated annunciator

Details Temperature compensated annunciator Temperature compensated annunciator

1994-11-28

1996-11-26

Hopsass, Jeffery

Communications: electrical

Condition responsive indicating system

Specific condition

340605, 340501, 340514, 340522, 340626, 340592, 73149, 73 492, 374143, 36457103, 36457104, 36457107, G08B 2100

Patent

active

055789935

ABSTRACT:
A solid state temperature compensated annunciator is disclosed. The solid state temperature compensated annunciator includes a pressure sensor for measuring a pressure of the fillant within a vessel and a temperature sensor for measuring the temperature of the fillant within the vessel. The solid state temperature compensated annunciator determines a pressure that the vessel would have if the vessel were filled with a predetermined amount of fillant, and compares the measured pressure to the determined pressure. If the measured pressure is below the determined pressure, a warning signal is issued.

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patent: 5079707 (1992-01-01), Bird et al.
patent: 5183116 (1993-02-01), Fleming
patent: 5239865 (1993-08-01), Salzer et al.
patent: 5307681 (1994-05-01), Phelps et al.
"Simple pressure switches comprise transducers, comparators, and op amps", by E. Jacobson et al., EDN Apr. 14, 1994.

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