Measuring and testing – Instrument proving or calibrating – Liquid level or volume measuring apparatus
Patent
1995-06-06
1997-06-03
Williams, Hezron E.
Measuring and testing
Instrument proving or calibrating
Liquid level or volume measuring apparatus
G01F 2500
Patent
active
056356218
ABSTRACT:
A method of calibrating a fuel level detector includes the steps of providing a first capacitor and second capacitor in electrically operable relation to a resistive member; charging the capacitors in free air; recording the discharge cycle of each of the capacitors through the resistive member as free-air clock counts; determining a free-air ratio of the two capacitors by comparing their free-air clock counts; then calibrating the fuel level detector by adjusting one of the capacitive values by a factor of said free-air ratio.
REFERENCES:
patent: 3797311 (1974-03-01), Blanchard et al.
patent: 4149412 (1979-04-01), Fish
patent: 4485673 (1984-12-01), Stern
patent: 4590575 (1986-05-01), Emplit
Ashraf Nashmiya
Chrysler Corporation
Dobrowitsky Margaret A.
Williams Hezron E.
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