CA2037993A1 - Flow indicator or flowmeter - Google Patents

Flow indicator or flowmeter

Info

Publication number
CA2037993A1
CA2037993A1 CA2037993A CA2037993A CA2037993A1 CA 2037993 A1 CA2037993 A1 CA 2037993A1 CA 2037993 A CA2037993 A CA 2037993A CA 2037993 A CA2037993 A CA 2037993A CA 2037993 A1 CA2037993 A1 CA 2037993A1
Authority
CA
Canada
Prior art keywords
diameter
litres
water
value
flowmeter
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.)
Granted
Application number
CA2037993A
Other languages
French (fr)
Other versions
CA2037993C (en
Inventor
Klaus Kobold
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.)
Individual
Original Assignee
Individual
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
Priority claimed from US07/492,327 external-priority patent/US5099699A/en
Priority claimed from DE19904028780 external-priority patent/DE4028780C2/en
Application filed by Individual filed Critical Individual
Publication of CA2037993A1 publication Critical patent/CA2037993A1/en
Application granted granted Critical
Publication of CA2037993C publication Critical patent/CA2037993C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01F1/05—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 mechanical effects
    • G01F1/06—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 mechanical effects using rotating vanes with tangential admission
    • 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
    • G01F1/05—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 mechanical effects
    • G01F1/06—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 mechanical effects using rotating vanes with tangential admission
    • G01F1/075—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 mechanical effects using rotating vanes with tangential admission with magnetic or electromagnetic coupling to the indicating device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/14—Casings, e.g. of special material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
    • G01P21/02—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers
    • G01P21/025—Testing or calibrating of apparatus or devices covered by the preceding groups of speedometers for measuring speed of fluids; for measuring speed of bodies relative to fluids

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Measuring Volume Flow (AREA)
  • Lubricants (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Paper (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

The present invention relates to a flow indicator or flowmeter with an impeller which is rotatably mounted in an essentially circular-cylindrical flow chamber of a flow housing which has an inlet channel and an outlet channel. To be able to use such an indicator and measuring device to achieve a high accuracy of measurement for a wide measuring range without any calibration, the present invention provides that a nozzle plate (14), having a nozzle hole (15) of a pre-determined cross-section, can be inserted so as to be exchangeable, e.g. can be screwed, into the inlet channel (1) and/or the outlet channel (2), and that the diameter D
(in mm) of the nozzle hole (15) can be fixed as a function of the lower limit R1 (in litres of water/min) of the measuring range such that the diameter D increases with the increase in the value of the ratio V = R1/D, whereby V has a value of about 0.075 litres of water/mm.min if the diameter D amounts to about 1.25 mm and a value of about 0.3 litres of water/mm.min if the diameter amounts to about 20 mm.
CA002037993A 1990-03-12 1991-03-11 Flow indicator or flowmeter Expired - Lifetime CA2037993C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US07/492,327 1990-03-12
US07/492,327 US5099699A (en) 1987-10-07 1990-03-12 Flow indicator or flowmeter
DE19904028780 DE4028780C2 (en) 1990-03-12 1990-09-11 Flow indicator or flowmeter
DEP4028780.7 1990-09-11

Publications (2)

Publication Number Publication Date
CA2037993A1 true CA2037993A1 (en) 1991-09-13
CA2037993C CA2037993C (en) 2000-11-21

Family

ID=25896759

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002037993A Expired - Lifetime CA2037993C (en) 1990-03-12 1991-03-11 Flow indicator or flowmeter

Country Status (4)

Country Link
EP (1) EP0447811B1 (en)
AT (1) ATE170286T1 (en)
CA (1) CA2037993C (en)
FI (1) FI103433B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1103912C (en) * 2000-03-31 2003-03-26 叶承业 Intelligent flowmeter
US9285254B2 (en) 2012-07-02 2016-03-15 Digmesa Ag Flowmeter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH699590A2 (en) 2008-09-22 2010-03-31 Schwanden Kunststoff Flowmeter for liquids.
WO2012126519A1 (en) * 2011-03-22 2012-09-27 Gardena Manufacturing Gmbh Apparatus for measuring a water flow using a turbine arrangement, which contains a turbine housing assembled from two identical housing parts
CN104568029A (en) * 2014-12-09 2015-04-29 宁波图兰多电器有限公司 Electronic flow meter

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3733862A1 (en) * 1987-10-07 1989-04-27 Klaus Dipl Ing Kobold FLOW DISPLAY OR MEASURING DEVICE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1103912C (en) * 2000-03-31 2003-03-26 叶承业 Intelligent flowmeter
US9285254B2 (en) 2012-07-02 2016-03-15 Digmesa Ag Flowmeter

Also Published As

Publication number Publication date
ATE170286T1 (en) 1998-09-15
FI911008A7 (en) 1991-09-13
FI103433B (en) 1999-06-30
EP0447811A1 (en) 1991-09-25
EP0447811B1 (en) 1998-08-26
FI103433B1 (en) 1999-06-30
CA2037993C (en) 2000-11-21
FI911008A0 (en) 1991-02-28

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202