Flow sensor having high impedance circuit with capacitive sensin

Details Flow sensor having high impedance circuit with capacitive sensin Flow sensor having high impedance circuit with capacitive sensin

1993-02-22

1995-02-28

Wieder, Kenneth A.

Measuring and testing

Volume or rate of flow

Using rotating member with particular electrical output or...

34087037, G01F 1500

Patent

active

053926579

ABSTRACT:
Apparatus is provided in which flow to be monitored actuates a device to move past a sensing electrode, causing changes of a capacitive sensing impedance in series with an impedance transformation device. The sensing electrode is at the high-impedance level of the impedance transformation device. Only a small fraction of the stray capacitance of circuit wiring, etc., which is connected at the low-impedance level of the impedance transformation device is reflected as a dulling shunt across the sensing capacitance.

REFERENCES:
patent: 3101615 (1963-08-01), Pavone
patent: 3776033 (1973-12-01), Herzl
patent: 3963920 (1976-06-01), Palmer
patent: 4006411 (1977-02-01), Akagawa et al.
patent: 4088022 (1978-05-01), Kalotay
patent: 4164866 (1979-08-01), Mitchell et al.
patent: 4310807 (1982-01-01), McKee
patent: 4324144 (1982-04-01), Miyata et al.
patent: 4415859 (1983-11-01), Slough et al.
patent: 4424860 (1983-09-01), Wood et al.
patent: 4456069 (1984-06-01), Vigneri
patent: 4462262 (1984-07-01), Kahnke
patent: 4523480 (1985-06-01), Inoue
patent: 4535637 (1985-08-01), Feller
patent: 4581943 (1986-04-01), Feller
patent: 4790195 (1988-12-01), Feller
patent: 4829833 (1989-05-01), Feller
patent: 4871931 (1989-10-01), Fitzpatrick et al.
patent: 4879912 (1989-11-01), Suckow
patent: 5117691 (1992-06-01), Fraser

Affiliated with

Also associated with

Rating

Flow sensor having high impedance circuit with capacitive sensin does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flow sensor having high impedance circuit with capacitive sensin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flow sensor having high impedance circuit with capacitive sensin will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-840489