Vibratable-wire instrument having an improved temperature compen

Details Vibratable-wire instrument having an improved temperature compen Vibratable-wire instrument having an improved temperature compen

1978-06-02

1979-08-28

Gill, James J.

Measuring and testing

Fluid pressure gauge

Vibration type

73708, 7 3, G01L 708, G01L 900

Patent

active

041656520

ABSTRACT:
A differential-pressure measuring instrument includes a pair of diaphragms each subject to a respective fluid pressure. The diaphragms enclose a sealed chamber containing a fill-liquid surrounding a non-magnetic vibratable-wire which is tensioned in accordance with the applied differential pressure.
A temperature compensating inductor is connected in parallel with the vibratable-wire to compensate for variationsin the vibrating frequency of the wire due to changes in the viscosity of the fill-liquid with temperature.

REFERENCES:
patent: 2455021 (1948-11-01), Rieber
patent: 3393565 (1968-07-01), Klee
patent: 3603137 (1971-09-01), Banks
patent: 3788134 (1974-01-01), Meier

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