Pressure measurement system

Details Pressure measurement system Pressure measurement system

1988-09-06

1990-05-15

Woodiel, Donald O.

Measuring and testing

Borehole or drilling

Downhole test

73706, 73722, 73753, 361283, E21B 4700, G01L 912

Patent

active

049247018

ABSTRACT:
A pressure measurement system comprising a capacitance device whose outer interrelated capacitance plates are maintained in a relatively fixed position relative to one another while an intermediate capacitance plate responds to temperature. The plates are in a restricted enclosure containing a gas dielectric medium. The pressure of the gas dielectric medium (and consequently the density of the gas) is controlled as a function of a pressure to be measured. By measurement of capacitance relationships as a function of the temperature and density of the gas dielectric medium, a pressure measurement is obtained. The system is constructed with like types of materials where the capacitance device is in an enclosure chamber which is immersed in a pressure media. The capacitance device is constructed with a symmetrical arrangement to balance out effects of gravity or vibration. Construction of micro components utilizes an electrostatic bonding system which eliminated arcing during bonding.

REFERENCES:
patent: 3478589 (1969-11-01), Birken
patent: 3911902 (1975-10-01), Delpy
patent: 4545254 (1985-10-01), Lawless et al.

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