Dual liquid level monitor

Details Dual liquid level monitor Dual liquid level monitor

1977-08-24

1979-08-21

Caldwell, Sr., John W.

Communications: electrical

Condition responsive indicating system

Specific condition

340605, 73304R, G08B 2100

Patent

active

041655095

ABSTRACT:
A liquid level monitoring system functions by applying an alternating voltage to a probe. When the liquid level in a reservoir touches the probe, a low impedance to ground is present, thereby permitting current to flow to ground. When the liquid level falls below the probe, a high impedance to ground is created and current flows to a detector. The detector switches on an alarm which flashes an appropriate warning.

REFERENCES:
patent: 3694804 (1972-09-01), Hill
patent: 3978463 (1976-08-01), Kerscher

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