GB1104207A - Improvements in or relating to electromagnetic flowmeters - Google Patents

Improvements in or relating to electromagnetic flowmeters

Info

Publication number
GB1104207A
GB1104207A GB957366A GB957366A GB1104207A GB 1104207 A GB1104207 A GB 1104207A GB 957366 A GB957366 A GB 957366A GB 957366 A GB957366 A GB 957366A GB 1104207 A GB1104207 A GB 1104207A
Authority
GB
United Kingdom
Prior art keywords
circuit
phase
switch
adjusted
field coils
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
GB957366A
Inventor
David Wildon Birnstingl
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.)
Mawdsleys Ltd
Original Assignee
Mawdsleys 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 Mawdsleys Ltd filed Critical Mawdsleys Ltd
Priority to GB957366A priority Critical patent/GB1104207A/en
Publication of GB1104207A publication Critical patent/GB1104207A/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
    • G01F1/60—Circuits therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

1,104,207. Electromagnetic flowmeters. MAWDSLEY'S Ltd. Feb. 13, 1967 [March 4, 1966], No. 9573/66. Heading G1N. In an electromagnetic flowmeter, a voltage measuring circuit 15 is connectable by a switch 14 either to the output terminals 6 of the measuring electrodes 3, or to an adjustable phase and amplitude circuit 7, which is adjusted to provide an output equal in phase and magnitude to the residual voltage produced by the electrode 3 under zero flow conditions. This residual voltage is due to mutual inductance between the field coils 4 and the connections 5 to the measuring electrodes, and the voltage measuring circuit 15 is adjusted to read zero with the switch 14 in the position shown, to compensate for this. The adjustable circuit 7 is energized by a current transformer 8 in the A. C. supply to the field coils 4. The potentiometer P1 adjusts amplitude, and P2 phase.
GB957366A 1966-03-04 1966-03-04 Improvements in or relating to electromagnetic flowmeters Expired GB1104207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB957366A GB1104207A (en) 1966-03-04 1966-03-04 Improvements in or relating to electromagnetic flowmeters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB957366A GB1104207A (en) 1966-03-04 1966-03-04 Improvements in or relating to electromagnetic flowmeters

Publications (1)

Publication Number Publication Date
GB1104207A true GB1104207A (en) 1968-02-21

Family

ID=9874596

Family Applications (1)

Application Number Title Priority Date Filing Date
GB957366A Expired GB1104207A (en) 1966-03-04 1966-03-04 Improvements in or relating to electromagnetic flowmeters

Country Status (1)

Country Link
GB (1) GB1104207A (en)

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