Controller for well installations

Details Controller for well installations Controller for well installations

1982-05-14

1985-08-06

Walton, George L.

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Cleaning or steam sterilizing

137312, 137315, 137551, 73431, 235 1D, 277 3, 361395, 361399, F16K 5100, F16J 1514

Patent

active

045329524

ABSTRACT:
A controller for well installations which responds to external signals originating from system monitors. This response may be modified by operator inserted delays or may be utilized to carry out a SET function wherein all signals are rejected until an externally derived RESET signal is received. A priority protocol is provided with respect to the SET and RESET functions. The circuit of the controller is housed within a circuit housing which includes a polymeric seal and operates in conjunction with a sealed keypad. This circuit housing is incorporated within a principal housing and a positive pressure is maintained within that principal housing to assure the integrity thereof.

REFERENCES:
patent: 3226836 (1966-01-01), Bond
patent: 3950677 (1976-04-01), Klein et al.
patent: 4056709 (1977-11-01), Scholl et al.
patent: 4314309 (1982-02-01), Read

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