GB834011A - Improvements in or relating to devices for measuring liquid flow - Google Patents

Improvements in or relating to devices for measuring liquid flow

Info

Publication number
GB834011A
GB834011A GB17795/56A GB1779556A GB834011A GB 834011 A GB834011 A GB 834011A GB 17795/56 A GB17795/56 A GB 17795/56A GB 1779556 A GB1779556 A GB 1779556A GB 834011 A GB834011 A GB 834011A
Authority
GB
United Kingdom
Prior art keywords
output
independent
phase
electrode
june
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB17795/56A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB834011A publication Critical patent/GB834011A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
    • G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters

Abstract

834,011. Electric tests. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 8, 1956 [June 11, 1955], No. 17795/56. Class 37. In an induction flowmeter in which an alternating field is used, voltages induced between electrodes 3, 3<SP>1</SP> by direct coupling are eliminated by feeding the electrode output through a phase-sensitive circuit 7 which is also fed with a reference voltage derived from auxiliary coils 4, 4<SP>1</SP>, energized by the alternating field. The required measuring voltage produced between the electrodes is 90 degrees out of phase with the reference while that produced by transformer action is 180 degrees out of phase. The coil output is amplified at 15 and the electrode output at 5. Meter 9 gives an indication which is independent of voltages induced directly between the electrode. Fig. 2 shows an arrangement in which the output is independent of field strength. The output of coil 4 is amplified at 15, integrated by R.C. circuit 10, 16 or by a frequency-sensitive back-coupled amplifier, rectified at 12, and the ratio of this voltage and the electrode output determined at 14 to indicate a rate of flow on meter 9 which is independent of field strength and frequency variations.
GB17795/56A 1955-06-11 1956-06-08 Improvements in or relating to devices for measuring liquid flow Expired GB834011A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL834011X 1955-06-11

Publications (1)

Publication Number Publication Date
GB834011A true GB834011A (en) 1960-05-04

Family

ID=19843073

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17795/56A Expired GB834011A (en) 1955-06-11 1956-06-08 Improvements in or relating to devices for measuring liquid flow

Country Status (1)

Country Link
GB (1) GB834011A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3323364A (en) * 1965-01-21 1967-06-06 Donald S Hunter Means for rejecting quadrature voltage signals in a flow meter
US3339410A (en) * 1964-02-06 1967-09-05 Cie Generale D Electronique In Flow meter
US3380301A (en) * 1966-05-04 1968-04-30 Fischer & Porter Co Magnetic flowmeter for magnetic slurries
US3433066A (en) * 1966-10-03 1969-03-18 Foxboro Co Magnetic flowmeter apparatus
US3777561A (en) * 1972-02-03 1973-12-11 Harnessed En Inc Faraday effect speedometer
USRE28327E (en) * 1972-02-03 1975-02-04 Lewis faraday effect speedometer
DE102013006142A1 (en) * 2013-04-10 2014-10-16 Fresenius Medical Care Deutschland Gmbh Device for measuring a fluid flow
WO2020089755A1 (en) * 2018-10-29 2020-05-07 Abb Schweiz Ag An electromagnetic flowmeter assembly with a movable magnetic ring

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339410A (en) * 1964-02-06 1967-09-05 Cie Generale D Electronique In Flow meter
US3323364A (en) * 1965-01-21 1967-06-06 Donald S Hunter Means for rejecting quadrature voltage signals in a flow meter
US3380301A (en) * 1966-05-04 1968-04-30 Fischer & Porter Co Magnetic flowmeter for magnetic slurries
US3433066A (en) * 1966-10-03 1969-03-18 Foxboro Co Magnetic flowmeter apparatus
US3777561A (en) * 1972-02-03 1973-12-11 Harnessed En Inc Faraday effect speedometer
USRE28327E (en) * 1972-02-03 1975-02-04 Lewis faraday effect speedometer
DE102013006142A1 (en) * 2013-04-10 2014-10-16 Fresenius Medical Care Deutschland Gmbh Device for measuring a fluid flow
US9791305B2 (en) 2013-04-10 2017-10-17 Fresenius Medical Care Deutschland Gmbh Apparatus for measuring a liquid flow
WO2020089755A1 (en) * 2018-10-29 2020-05-07 Abb Schweiz Ag An electromagnetic flowmeter assembly with a movable magnetic ring
CN112912697A (en) * 2018-10-29 2021-06-04 Abb瑞士股份有限公司 Electromagnetic flowmeter assembly with movable magnetic ring
US11815379B2 (en) 2018-10-29 2023-11-14 Abb Schweiz Ag Electromagnetic flowmeter assembly with a rotatable magnetic ring on a surface of the conduit for adjusting varying magnetic field

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