Level indicator

Details Level indicator Level indicator

1978-07-21

1980-05-20

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

73304R, 340 59, 340614, 340622, G08B 2100

Patent

active

042042038

ABSTRACT:
A level indicator comprises a tubular probe immersed in the liquid to a depth defining the minimum liquid level in the reservoir. The probe communicates with a gas-filled chamber with a heating resistor therein. A warning member is connected to the gas-filled chamber to indicate that the level of the liquid reaches a minimum as indicated by no pressure increase occurring in said chamber.

REFERENCES:
patent: 3132331 (1964-05-01), Boddy
patent: 3739337 (1973-06-01), Hill

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