GB1385595A - Method and apparatus for pressure and flow measurement - Google Patents

Method and apparatus for pressure and flow measurement

Info

Publication number
GB1385595A
GB1385595A GB2864072A GB2864072A GB1385595A GB 1385595 A GB1385595 A GB 1385595A GB 2864072 A GB2864072 A GB 2864072A GB 2864072 A GB2864072 A GB 2864072A GB 1385595 A GB1385595 A GB 1385595A
Authority
GB
United Kingdom
Prior art keywords
thermistors
difference
flow
fluid flow
branches
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
GB2864072A
Other languages
English (en)
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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
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 F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Publication of GB1385595A publication Critical patent/GB1385595A/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
    • G01F1/704—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow using marked regions or existing inhomogeneities within the fluid stream, e.g. statistically occurring variations in a fluid parameter
    • 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
    • G01F1/6842—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow with means for influencing the fluid flow

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Volume Flow (AREA)
  • Measuring Fluid Pressure (AREA)
GB2864072A 1971-07-26 1972-06-19 Method and apparatus for pressure and flow measurement Expired GB1385595A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1096071A CH541136A (de) 1971-07-26 1971-07-26 Verfahren und Vorrichtung zur Druck- und Strömungsmessung

Publications (1)

Publication Number Publication Date
GB1385595A true GB1385595A (en) 1975-02-26

Family

ID=4368617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2864072A Expired GB1385595A (en) 1971-07-26 1972-06-19 Method and apparatus for pressure and flow measurement

Country Status (11)

Country Link
BE (1) BE786691A (https=)
CA (1) CA985929A (https=)
CH (1) CH541136A (https=)
DD (1) DD99441A5 (https=)
DE (1) DE2236691A1 (https=)
ES (1) ES405108A1 (https=)
FR (1) FR2147167B1 (https=)
GB (1) GB1385595A (https=)
IL (1) IL39678A0 (https=)
IT (1) IT956008B (https=)
NL (1) NL7208048A (https=)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194059A (en) * 1986-08-13 1988-02-24 Mitsubishi Heavy Ind Ltd Failure diagnosing method for pressure sensor in refrigeration unit
IT201800005288A1 (it) * 2018-05-11 2019-11-11 Macchina per emodialisi provvista di un sistema di misura della portata di un liquido e relativo metodo di funzionamento

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4163390A (en) * 1977-04-14 1979-08-07 Rodder Jerome A Bipolar fluid measuring apparatus
DE3307126A1 (de) * 1983-03-01 1983-10-06 Esdorn Horst Verfahren und einrichtungen zur stetigen und dreipunkt-messung kleinster differenzdruecke
DE4026998A1 (de) * 1990-08-27 1991-03-14 Erhard Luginsland Vorrichtung zur stetigen kontrolle der druckverhaeltnisse zwischen bereichen mit unterschiedlichen anforderungen an die luftqualitaet

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194059A (en) * 1986-08-13 1988-02-24 Mitsubishi Heavy Ind Ltd Failure diagnosing method for pressure sensor in refrigeration unit
AU597998B2 (en) * 1986-08-13 1990-06-14 Mitsubishi Jukogyo Kabushiki Kaisha Failure diagnosing method for pressure sensor in refrigeration unit
GB2194059B (en) * 1986-08-13 1990-07-11 Mitsubishi Heavy Ind Ltd Failure diagnosing method for pressure sensor in refrigeration unit
IT201800005288A1 (it) * 2018-05-11 2019-11-11 Macchina per emodialisi provvista di un sistema di misura della portata di un liquido e relativo metodo di funzionamento
EP3566729A1 (en) * 2018-05-11 2019-11-13 Medica S.p.A. Hemodialysis machine provided with a liquid flow measurement system and related method

Also Published As

Publication number Publication date
BE786691A (fr) 1973-01-25
IL39678A0 (en) 1972-08-30
NL7208048A (https=) 1973-01-30
FR2147167A1 (https=) 1973-03-09
IT956008B (it) 1973-10-10
ES405108A1 (es) 1975-07-16
DE2236691A1 (de) 1973-02-08
DD99441A5 (https=) 1973-08-05
CA985929A (en) 1976-03-23
CH541136A (de) 1973-08-31
FR2147167B1 (https=) 1976-03-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees