GB977911A - - Google Patents

Info

Publication number
GB977911A
GB977911A GB5536/62A GB553662A GB977911A GB 977911 A GB977911 A GB 977911A GB 5536/62 A GB5536/62 A GB 5536/62A GB 553662 A GB553662 A GB 553662A GB 977911 A GB977911 A GB 977911A
Authority
GB
United Kingdom
Prior art keywords
poles
flow
liquid
pipe
feb
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
GB5536/62A
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.)
Neyrpic SA
Original Assignee
Neyrpic SA
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 Neyrpic SA filed Critical Neyrpic SA
Publication of GB977911A publication Critical patent/GB977911A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D473/00—Heterocyclic compounds containing purine ring systems
    • C07D473/26—Heterocyclic compounds containing purine ring systems with an oxygen, sulphur, or nitrogen atom directly attached in position 2 or 6, but not in both
    • C07D473/32—Nitrogen atom
    • C07D473/34—Nitrogen atom attached in position 6, e.g. adenine
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D307/62—Three oxygen atoms, e.g. ascorbic acid
    • 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
    • G01F1/582—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 without electrodes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)

Abstract

977,911. Induction flowmeters. ETABLISSEMENTS NEYRPIC, and LABORATOIRE D'ELECTRONIQUE ET D'AUTOMATIQUE DAUPHINOIS. Feb. 13,1962 [Feb. 14, 1961], No. 5536/62. Heading G1N. In a flowmeter comprising a rectangular pipe section 1 passing through apertures in the ends 5, 6 of a rectangular yoke 3, 4 an alternating magnetic field is created within the pipe by poles N.S. and the currents in the liquid resulting from its movement induce a signal whose simplitude is proportional to the rate of flow in windings 21-24 through additional poles P situated between each pair of magnetising poles. The flow is indicated in a meter 35 and compensation for the effects of parasitic fields is provided by a circuit comprising a transformer 17 potentiometers 27, 19 and a capacitor 18 which are set to produce a zero output when there is no flow. The pipe which is non-magnetic has an electric conductivity lower than that of the liquid e.g. metal flowing through it, and the smaller sides may be lined with copper. The yokes are of luminations, and an additional coil may be provided to monitor liquid resistivity for compensation purposes.
GB5536/62A 1961-02-14 1962-02-13 Expired GB977911A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR4337A FR4191M (en) 1965-02-04 1965-02-04

Publications (1)

Publication Number Publication Date
GB977911A true GB977911A (en) 1964-12-16

Family

ID=8569985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5536/62A Expired GB977911A (en) 1961-02-14 1962-02-13

Country Status (2)

Country Link
FR (1) FR4191M (en)
GB (1) GB977911A (en)

Also Published As

Publication number Publication date
FR4191M (en) 1966-05-31

Similar Documents

Publication Publication Date Title
US2733604A (en) coulter
GB1158790A (en) Improvements in Fluid Density Meters
US2734380A (en) mittelmann
NO783364L (en) DEVICE FOR MEASURING LIQUID CURRENT
GB1206463A (en) Improvements in or relating to fluid flow velocity measurement
JPS55101015A (en) Electromagnetic flowmeter transmitter
GB1122763A (en) Inductive angular position transmitter
GB977911A (en)
US3377855A (en) Noise nulling network for magnetic flowmeter
JPS57128854A (en) Current transformer
US3926049A (en) Quadrature-voltage balancing circuit or electromagnetic flowmeter
US3138022A (en) Induction controlled flowmeters for conductive liquids
US2770130A (en) Magnetic flow meter
YU46871B (en) CURRENT TRANSFORMER ASSEMBLY FOR STATIC ELECTRICITY METER
US2741121A (en) Means for minimizing electrostatic voltages in a flowmeter
GB1072521A (en) Improvements in or relating to flowmeters
GB1130368A (en) Improvements in or relating to electromagnetic flowmeters
RU2591277C1 (en) Magnetic flow meter of liquid metal
US1962929A (en) Measuring instrument
SU391397A1 (en) INDUCTION FLOW METER
RU2778429C1 (en) Liquid metal electromagnetic flow meter
GB726271A (en) Detector for an induction liquid flow meter
GB695425A (en) Fluid flow meter
SU821922A1 (en) Electromagnetic flowmeter
GB1253967A (en) In or relating to electromagnetic flow-meters