Open-loop differential-pressure transmitter

Details Open-loop differential-pressure transmitter Open-loop differential-pressure transmitter

1975-05-21

1976-07-13

Woodiel, Donald O.

Measuring and testing

Gas analysis

Moisture content or vapor pressure

73407R, 73DIG2, G01L 916

Patent

active

039686930

ABSTRACT:
An electronic differential-pressure transmitter responsive to a difference between two pressure values to generate an output signal proportional to differential pressure for transmission to a remote station for acuating indicator or process control equipment. The transmitter is of the open-loop type that includes a pivoted force-beam to the lower end of which is applied an input force dependent on differential pressure, the resultant deflection of the beam being sensed by a motion detector coupled to the upper end thereof to produce the output signal.

REFERENCES:
patent: 3168830 (1965-02-01), Chass
patent: 3274833 (1966-09-01), Ollivier et al.
patent: 3342072 (1967-09-01), Trekell
patent: 3343420 (1967-09-01), Kondo et a.
patent: 3459045 (1969-08-01), Sanford
patent: 3564923 (1971-02-01), Nudd et al.

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