Alternating current liquid level indicator

Details Alternating current liquid level indicator Alternating current liquid level indicator

G - Physics

01

F

340/144

G01F 23/24 (2006.01)

Patent

CA 1065976

ALTERNATING CURRENT LIQUID LEVEL INDICATOR Abstract of the Disclosure An oscillator has its output coupled to a control element of a switch as well as to a probe. When the probe is in contact with liquid in a container, it is essentially grounded so that the switch is turned off. When, however, the liquid level falls below the probe, the oscillator output signal turns on the switch, which in turn illuminates an indicator lamp. A pair of latching circuits are connected from a point between the lamp and the switch to the oscillator and to the switch contact element and serve to bias the switch on and turn the oscillator off once the lamp has been illuminated.

256519

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