Hydrocarbon and water level sensor system used to monitor underg

Details Hydrocarbon and water level sensor system used to monitor underg Hydrocarbon and water level sensor system used to monitor underg

1988-05-24

1989-05-02

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular system function

340604, 340605, 340612, 340618, 200 6104, 73304R, 136206, 323906, 116109, 116227, G08B 1900, G01F 2300

Patent

active

048272469

ABSTRACT:
Combination hydrocarbon and water level sensor systems for use in connection with underground storage sites, such as gasoline storage tanks, industrial waste sites, and the like, with a solar cell power source and an LCD display located above ground and providing directly viewable indication of the presence or absence in the underground environment of "HYDROCARBON" and/or "WATER", with the absence of such being indicated by "OK". In the preferred form, a pod containing an adsorptive type hydrocarbon gas sensor and a galvanic cell type liquid water sensor is suspended by electrical cable means from a well cap in which the solar cell and LCD display are installed.

REFERENCES:
patent: 4351642 (1982-09-01), Bonavent et al.
patent: 4663614 (1987-05-01), Kauchwerger
patent: 4682156 (1987-07-01), Wainwright

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