Liquid contamination detector

Details Liquid contamination detector Liquid contamination detector

1975-09-26

1976-12-14

Caldwell, John W.

Communications: electrical

Systems

Call station

200 6104, 200 83B, 210 85, 210222, 340242, G08B 2100, B03C 130, H01H 3500

Patent

active

039978869

ABSTRACT:
A system for detecting the presence of a contaminating fluid in other, normal fluids. In one embodiment the system detects the presence of hydrocarbons in a liquid which is normally water. A barrier which is soluble in hydrocarbons but insoluble in water has one side in contact with the liquid. A liquid sensitive switch is positioned on the other side of the barrier. If hydrocarbons are present, they will dissolve the barrier and close the switch which will set off an alarm. In a second embodiment wherein water is the possible contaminant in hydrocarbons, a barrier which is soluble in water but insoluble in hydrocarbons is utilized.

REFERENCES:
patent: 2067440 (1937-01-01), Finney

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