Pressure recorder with power conservation means

Details Pressure recorder with power conservation means Pressure recorder with power conservation means

1977-08-03

1978-08-15

Miller, Jr., George H.

Recorders

Combined with external recorder operating means

Well logging

346 17, 346 65, G01D 900

Patent

active

041076974

ABSTRACT:
An instrument for recordation and time monitoring of pressure, as at a remote wellhead site. The instrument is battery powered, and means for conservation of battery power include powering the device intermittently under control of low power-drain CMOS clock timing circuits. Relatively higher power-drain calibration and display modes are continuously powered only on operator demand. In any operating mode, only those elements necessary to effect the mode are powered, either on an intermittent or continuous basis, as appropriate to realize the mode objective.

REFERENCES:
patent: 2594136 (1952-04-01), Di Maggio, Jr.
patent: 3173744 (1965-03-01), Eisele
patent: 3217221 (1965-11-01), Heggen et al.
patent: 3220012 (1965-11-01), Schwertz
patent: 3441945 (1969-04-01), Leidy, Jr. et al.
patent: 3569741 (1971-03-01), Bolick, Jr. et al.
patent: 3786511 (1974-01-01), Bates et al.

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