GB0820564D0 - Closed loop flow control of a hplcconstant flow pump to enable low-flow operation - Google Patents

Closed loop flow control of a hplcconstant flow pump to enable low-flow operation

Info

Publication number
GB0820564D0
GB0820564D0 GBGB0820564.3A GB0820564A GB0820564D0 GB 0820564 D0 GB0820564 D0 GB 0820564D0 GB 0820564 A GB0820564 A GB 0820564A GB 0820564 D0 GB0820564 D0 GB 0820564D0
Authority
GB
United Kingdom
Prior art keywords
flow
hplcconstant
closed loop
enable low
pump
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
GBGB0820564.3A
Other versions
GB2454783A (en
GB2454783B (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.)
Waters Investments Ltd
Original Assignee
Waters Investments 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 Waters Investments Ltd filed Critical Waters Investments Ltd
Priority to GB0820564A priority Critical patent/GB2454783B/en
Priority claimed from GB0624464A external-priority patent/GB2429785B/en
Publication of GB0820564D0 publication Critical patent/GB0820564D0/en
Publication of GB2454783A publication Critical patent/GB2454783A/en
Application granted granted Critical
Publication of GB2454783B publication Critical patent/GB2454783B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
    • B01D15/08—Selective adsorption, e.g. chromatography
    • 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
    • G01F1/34—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 by measuring pressure or differential pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D11/00—Control of flow ratio
    • G05D11/02—Controlling ratio of two or more flows of fluid or fluent material
    • G05D11/13—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means
    • G05D11/131—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components
    • G05D11/132—Controlling ratio of two or more flows of fluid or fluent material characterised by the use of electric means by measuring the values related to the quantity of the individual components by controlling the flow of the individual components
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/08—Control of liquid pressure
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02—Column chromatography
    • G01N30/26—Conditioning of the fluid carrier; Flow patterns
    • G01N30/28—Control of physical parameters of the fluid carrier
    • G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
    • G01N2030/326—Control of physical parameters of the fluid carrier of pressure or speed pumps

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Measuring Volume Flow (AREA)
GB0820564A 2004-05-21 2005-05-20 HPLC constant flow pump to enable low-flow operation, wherein thermal-based sensors are contained within an isothermal block Active GB2454783B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0820564A GB2454783B (en) 2004-05-21 2005-05-20 HPLC constant flow pump to enable low-flow operation, wherein thermal-based sensors are contained within an isothermal block

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US57352804P 2004-05-21 2004-05-21
GB0820564A GB2454783B (en) 2004-05-21 2005-05-20 HPLC constant flow pump to enable low-flow operation, wherein thermal-based sensors are contained within an isothermal block
GB0624464A GB2429785B (en) 2004-05-21 2005-05-20 Closed loop flow control of a hplc constant flow pump to enable low-flow operation

Publications (3)

Publication Number Publication Date
GB0820564D0 true GB0820564D0 (en) 2008-12-17
GB2454783A GB2454783A (en) 2009-05-20
GB2454783B GB2454783B (en) 2009-10-28

Family

ID=40139686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0820564A Active GB2454783B (en) 2004-05-21 2005-05-20 HPLC constant flow pump to enable low-flow operation, wherein thermal-based sensors are contained within an isothermal block

Country Status (1)

Country Link
GB (1) GB2454783B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9779924B2 (en) * 2013-09-20 2017-10-03 Micromass Uk Limited Mass spectrometer
CN107003288B (en) 2014-12-12 2020-07-28 通用电气健康护理生物科学股份公司 System for preparing solution for chromatography
EP3086197A1 (en) 2015-04-21 2016-10-26 Airbus Defence and Space, S.A. Machine for mixing and successively applying sealant material
DE102017115345A1 (en) * 2017-07-10 2019-01-10 Washtec Holding Gmbh Car wash with adjustable dosage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7465382B2 (en) * 2001-06-13 2008-12-16 Eksigent Technologies Llc Precision flow control system
US6962658B2 (en) * 2003-05-20 2005-11-08 Eksigent Technologies, Llc Variable flow rate injector

Also Published As

Publication number Publication date
GB2454783A (en) 2009-05-20
GB2454783B (en) 2009-10-28

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