Apparatus and method for measuring alcohol concentration of liqu

Details Apparatus and method for measuring alcohol concentration of liqu Apparatus and method for measuring alcohol concentration of liqu

1994-08-10

1996-01-30

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324685, 324686, 73 6143, G01N 2722

Patent

active

054883113

ABSTRACT:
The electrodes of an electrostatic capacitor which is used to determine the alcohol concentration in a mixture of gasoline and alcohol, are connected with a frequency oscillator of the LC type which applies a signal having a frequency which is equal to or greater than 10 MHz. The setting of the oscillation frequency to 10 MHz or more eliminates the amount of change in electrode loss and enables stable and accurate alcohol concentration determination.

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patent: 5205151 (1993-04-01), Shimamura et al.
Takeuchi et al. "A Capacitance Senor for Methanol Ratio Measurement of Blended Gasoline", IEEE London Meeting, Oct. 28, 1991.

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