GB1414112A - Mass flow meter - Google Patents

Mass flow meter

Info

Publication number
GB1414112A
GB1414112A GB159374A GB159374A GB1414112A GB 1414112 A GB1414112 A GB 1414112A GB 159374 A GB159374 A GB 159374A GB 159374 A GB159374 A GB 159374A GB 1414112 A GB1414112 A GB 1414112A
Authority
GB
United Kingdom
Prior art keywords
coils
mass flow
foamed
encasing
foam material
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
GB159374A
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.)
Entegris Inc
Original Assignee
Tylan Corp
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 US05/381,455 external-priority patent/US3938384A/en
Application filed by Tylan Corp filed Critical Tylan Corp
Publication of GB1414112A publication Critical patent/GB1414112A/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
    • G01F1/68—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 thermal effects
    • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
    • G01F1/6847—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow where sensing or heating elements are not disturbing the fluid flow, e.g. elements mounted outside the flow duct

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)

Abstract

1414112 Measuring fluid mass flow-rate electrically TYLAN CORP 14 Jan 1974 [23 July 1973] 01593/74 Heading G1N A fluid mass flow-rate meter includes a conduit 14 two resistive sensing coils 22, 24 wound around the conduit external surface and heated by current from D.C. supply 30, which coils are connected in a bridge circuit to detect the temperature difference therebetween, and are thermally insulated by open cell synthetic polymer foam material 37 encasing the coils. Suitable materials are foamed polystyrene, polyurethane foam, foamed polyethylene or foamed polypropylene. It is stated that the foam material encasing the coils reduces the error due to convection currents when the coils are tilted out of the horizontal.
GB159374A 1973-07-23 1974-01-14 Mass flow meter Expired GB1414112A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/381,455 US3938384A (en) 1972-10-13 1973-07-23 Mass flow meter with reduced attitude sensitivity

Publications (1)

Publication Number Publication Date
GB1414112A true GB1414112A (en) 1975-11-19

Family

ID=23505088

Family Applications (1)

Application Number Title Priority Date Filing Date
GB159374A Expired GB1414112A (en) 1973-07-23 1974-01-14 Mass flow meter

Country Status (2)

Country Link
FR (1) FR2238916B1 (en)
GB (1) GB1414112A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131318B1 (en) * 1983-05-18 1991-12-27 Bronkhorst High-Tech B.V. Fluid flow measuring device

Also Published As

Publication number Publication date
FR2238916A1 (en) 1975-02-21
FR2238916B1 (en) 1978-06-16

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19940111