Measuring and testing – Volume or rate of flow – By measuring electrical or magnetic properties
Patent
1993-09-02
1995-06-27
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
By measuring electrical or magnetic properties
7386112, G01F 100
Patent
active
054269849
ABSTRACT:
An electromagnetic fluid flowmeter includes empty pipe detection circuitry. The empty pipe detection circuitry applies a common mode asynchronous signal into a pair of electrodes in the flowmeter. Impedance of fluid is determined by measuring the magnitude of the asynchronous signal between an electrode and electrical ground. Impedance is used to determine an empty pipe condition.
REFERENCES:
patent: 2685796 (1954-08-01), Romanowski et al.
patent: 3290585 (1966-12-01), McHowell
patent: 3299703 (1967-01-01), Colvin et al.
patent: 3528287 (1970-09-01), Melcher
patent: 3570309 (1971-03-01), Birnstingl
patent: 3783687 (1974-01-01), Mannherz et al.
patent: 3896373 (1975-07-01), Zelby
patent: 3902366 (1975-09-01), Gruner
patent: 3999443 (1976-12-01), Appel et al.
patent: 4119909 (1978-10-01), DeBerry
patent: 4290313 (1981-09-01), Appel et al.
patent: 4408497 (1983-10-01), Suzuki
patent: 4409846 (1983-10-01), Ueno
patent: 4513624 (1985-04-01), McHale et al.
patent: 4663976 (1987-05-01), Suzuki et al.
patent: 4676112 (1987-06-01), Uematsu et al.
patent: 4704907 (1987-11-01), Mannherz et al.
patent: 4784001 (1988-11-01), Gaertner et al.
patent: 4969363 (1990-11-01), Mochizuki
Coursolle Thomas P.
Rovner Bruce D.
Biegel R.
Goldstein Herbert
Rosemount Inc.
LandOfFree
Magnetic flowmeter with empty pipe detector does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Magnetic flowmeter with empty pipe detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic flowmeter with empty pipe detector will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-280729