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1. (WO1998049528) ELECTROMAGNETIC FLOWMETER
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049528 International Application No.: PCT/GB1998/001199
Publication Date: 05.11.1998 International Filing Date: 24.04.1998
Chapter 2 Demand Filed: 09.11.1998
IPC:
G01F 1/00 (2006.01) ,G01F 1/58 (2006.01) ,G01F 1/60 (2006.01)
G PHYSICS
01
MEASURING; TESTING
F
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
1
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
G PHYSICS
01
MEASURING; TESTING
F
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
1
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
56
by using electric or magnetic effects
58
by electromagnetic flowmeters
G PHYSICS
01
MEASURING; TESTING
F
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
1
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
56
by using electric or magnetic effects
58
by electromagnetic flowmeters
60
Circuits therefor
Applicants:
ABB METERING LIMITED [GB/GB]; Pondwicks Road Luton Bedfordshire LU1 3LJ, GB (AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, CA, CF, CG, CH, CI, CM, CN, CU, CY, CZ, DE, DK, EE, ES, FI, FR, GA, GB, GE, GH, GM, GN, GR, GW, HU, ID, IE, IL, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MC, MD, MG, MK, ML, MN, MR, MW, MX, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW)
SOGHOMONIAN SALMASI, Zareh [GB/GB]; GB (UsOnly)
JIN, Wu [GB/GB]; GB (UsOnly)
GREGG, Ronald, David [FR/GB]; GB (UsOnly)
MACMANUS, Gerard [GB/GB]; GB (UsOnly)
HOWARTH, Craig, Timothy [GB/GB]; GB (UsOnly)
Inventors:
SOGHOMONIAN SALMASI, Zareh; GB
JIN, Wu; GB
GREGG, Ronald, David; GB
MACMANUS, Gerard; GB
HOWARTH, Craig, Timothy; GB
Agent:
MOIR, Michael, Christopher ; Mathys & Squire 100 Grays Inn Road London WC1X 8AL, GB
Priority Data:
9708539.325.04.1997GB
Title (EN) ELECTROMAGNETIC FLOWMETER
(FR) DEBITMETRE ELECTROMAGNETIQUE
Abstract:
(EN) A method of operating an electromagnetic flowmeter comprising a flow measurement duct, means for generating a magnetic field in fluid flowing in the duct across the direction of flow, and means for measuring a voltage thereby induced in the fluid as indicative of the flow, the method comprising measuring an output of said measuring means in the absence of said magnetic field and determining therefrom the presence or absence of fluid in the duct.
(FR) L'invention concerne un procédé d'actionnement d'un débitmètre électromagnétique comprenant un conduit de mesure du débit, un dispositif de génération d'un champ magnétique dans un fluide s'écoulant dans le conduit à travers le sens d'écoulement, et un dispositif de mesure d'une tension induite par ce dispositif de génération dans le fluide comme indication du débit; le procédé consiste à mesurer une sortie de ce dispositif de mesure en l'absence de ce champ magnétique et à déterminer à partir de là la présence ou l'absence de fluide dans le conduit.
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
MXPA/a/1999/009800KR1020010020291EP0975936US6237424JP2001522457 CA2286099
DE000069821474PT975936GB2324606AU1998070688