Measuring and testing – Volume or rate of flow – By measuring electrical or magnetic properties
Patent
1986-05-13
1988-02-02
Ruehl, Charles A.
Measuring and testing
Volume or rate of flow
By measuring electrical or magnetic properties
G01F 158
Patent
active
047222310
ABSTRACT:
An electromagnetic flowmeter includes a metal case and a ceramic measuring pipe with a pair of coils and a pair of electrodes. The ceramic measuring pipe is a straight pipe or a pipe with flanges. The ceramic measuring pipe is detachably mounted in the metal case directly or through metal rings. O-rings are fluid-tightly mounted in flanges of the ceramic measuring pipe or the metal rings, respectively. A ground rod extends through a hole in the wall of the measuring pipe. One end of the ground rod is in contact with the conductive fluid and the other end thereof is electrically connected to the case through a screw or banana jack.
REFERENCES:
patent: 3334518 (1967-08-01), Miyamichi
patent: 3610040 (1971-10-01), Wada
patent: 4507975 (1985-04-01), Bittner et al.
patent: 4607533 (1986-08-01), Kuroda et al.
Published Japanese Translations of PCT Pat. No. Sho 58-501552, 9-16-83.
Goto Tsutomu
Ishikawa Sakae
Tanaka Yoshiro
Wada Norikazu
Yoshino Tokuji
Ruehl Charles A.
Yamatake-Honeywell Co. Ltd.
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