Level sensor

Details Level sensor Level sensor

1996-05-17

2000-08-15

Williams, Hezron

Measuring and testing

Liquid level or depth gauge

Immersible electrode type

G01F 2326

Patent

active

061018732

ABSTRACT:
Switching member SW20 which receives detection signals for detecting capacitance outputted from a control part 35, controls each of switches so as to measure capacitance between electrodes positioned adjacently (an electrode TE1 and an electrode TE2, and so on) before measuring capacitance of measuring object. Capacitance initially measured between the adjacent electrodes are stored in a storing circuit 30. The initial capacitance are averaged to calculate an averaged initial value. Upon calculating the averaged initial value, correction values which represent difference between the averaged initial value and the initial capacitance are calculated. Actual measured values are corrected using the correction values when level of measuring object is measured. It is therefore possible to measure level of measuring object without influence of floating items or the like with stability, because level measurement is conducted by utilizing capacitance measured between adjacent electrodes. Also, actual measured values are corrected with the corrected value after measuring initial values. Therefore, level measurement of the measuring object can be conducted with high stability and accuracy.

REFERENCES:
patent: 4003259 (1977-01-01), Hope
patent: 4589077 (1986-05-01), Pope
patent: 4601201 (1986-07-01), Oota et al.
patent: 4611489 (1986-09-01), Spaargaren et al.
patent: 4716536 (1987-12-01), Blanchard
patent: 5103368 (1992-04-01), Hart
patent: 5406843 (1995-04-01), Hannan et al.
patent: 5423214 (1995-06-01), Lee
patent: 5613399 (1997-03-01), Hannan et al.

Affiliated with

Also associated with

Rating

Level sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Level sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Level sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1995824