Fluid-gauging systems

Details Fluid-gauging systems Fluid-gauging systems

1984-03-20

1986-04-22

Frankfort, Charles

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

73304R, G08B 2100

Patent

active

045834024

ABSTRACT:
The output of a capacitance fuel sensor is supplied to two switches that are controlled by a switching control unit. The two switches are opened and closed in synchronism and antiphase with one another, and in quadrature with the drive voltage applied to the sensor. The output of one switch is supplied to the input of a first integrating current-to-voltage amplifier which in turn supplies a signal representative of fuel quantity to a fuel indicator. The output of the other switch is supplied to another integrating current-to-voltage amplifier which in turn supplies a signal representative of the quantity of contaminants to a contaminant indicator.

REFERENCES:
patent: 3267378 (1966-08-01), Barter
patent: 3883755 (1975-05-01), Faulkner
patent: 4110740 (1978-08-01), Akita et al.
patent: 4259865 (1981-04-01), Myers

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