Pump control system, level sensor switch and switch housing

Details Pump control system, level sensor switch and switch housing Pump control system, level sensor switch and switch housing

1989-11-13

1990-11-27

Yasich, Daniel M.

Measuring and testing

Liquid level or depth gauge

200308, 340618, 417 38, F04B 4906, G01F 2318, H01H 902

Patent

active

049727095

ABSTRACT:
A control system for a pump includes a level sensor switch that is positioned along a production string in an oil well shaft (S). The level sensor switch is protected from damage by inner and outer housings. A control circuit responsive to the level sensor switch is also provided. The control circuit includes an adjustable timer that is located at ground level remote from the harsh environment of the oil well shaft (S). The timer controls the operation time of the pump during each pumping cycle.

REFERENCES:
patent: 3285183 (1966-11-01), Hembree et al.
patent: 3453962 (1969-07-01), Strader
patent: 3517142 (1970-06-01), Bastam et al.
patent: 3963375 (1976-06-01), Curtis
patent: 4214133 (1980-07-01), Wolford et al.
patent: 4287401 (1981-09-01), Rohrbach

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