GB1399397A - Fluid flow control arrangements - Google Patents

Fluid flow control arrangements

Info

Publication number
GB1399397A
GB1399397A GB4589972A GB4589972A GB1399397A GB 1399397 A GB1399397 A GB 1399397A GB 4589972 A GB4589972 A GB 4589972A GB 4589972 A GB4589972 A GB 4589972A GB 1399397 A GB1399397 A GB 1399397A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
tube
restrictor element
restrictor
end
bore
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
GB4589972A
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.)
Pye Electronic Products Ltd
Original Assignee
Pye Electronic Products 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

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/60Construction of the column
    • G01N30/6004Construction of the column end pieces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/28Control of physical parameters of the fluid carrier
    • G01N30/32Control of physical parameters of the fluid carrier of pressure or speed
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/26Conditioning of the fluid carrier; Flow patterns
    • G01N30/28Control of physical parameters of the fluid carrier
    • G01N30/32Control of physical parameters of the fluid carrier of pressure or speed
    • G01N2030/324Control of physical parameters of the fluid carrier of pressure or speed speed, flow rate
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/60Construction of the column
    • G01N30/6004Construction of the column end pieces
    • G01N2030/6008Construction of the column end pieces capillary restrictors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/60Construction of the column
    • G01N30/6004Construction of the column end pieces
    • G01N2030/6013Construction of the column end pieces interfaces to detectors
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N30/04Preparation or injection of sample to be analysed
    • G01N30/06Preparation
    • G01N30/10Preparation using a splitter

Abstract

1399397 Flow restrictor for gas chromatograph PYE LTD 5 Oct 1972 45899/72 Heading B1H In a fluid flow restrictor arrangement for gas analysis equipment including a tube through which gas may flow and a restrictor element to impede such flow secured in holding means which, extends from one end of the tube, the holding means includes or consists entirely of a generally tubular member which is secured to the tube and with has a bore extending away from said end of the tube for communicating with an operative device or another tube to which the tube is to be coupled, and the restrictor element is a mass of porous material which has been packed by packing means against a shoulder at the end of said bore nearest the tube to secure the restrictor element in the bore, the degree of packing having ensured that in the absence of the packing means the restrictor element is sufficiently rigid to retain its shape and position in the bore and its required degree of impedance, the arrangement being such that disconnection and withdrawal of the tube from said operative device or other tube will cause the holding means and the restrictor element to be withdrawn with the tube so that the restrictor element can be removed from the equipment for examination or replacement. In one embodiment a holder 2 is biased to the end of a tube 1. The holder has a constriction; one side of this forms a seat for the tube, the other forms a shoulder 3 against which a sintered mass 5 of stainless steel, aluminium, brass or PTFE is packed. The holder 2 may have an external flange to allow it to be fixed in a screw coupling (Fig 3 not shown).
GB4589972A 1972-10-05 1972-10-05 Fluid flow control arrangements Expired GB1399397A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4589972A GB1399397A (en) 1972-10-05 1972-10-05 Fluid flow control arrangements

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4589972A GB1399397A (en) 1972-10-05 1972-10-05 Fluid flow control arrangements
DE19732349422 DE2349422A1 (en) 1972-10-05 1973-10-02 Fluidstroemungsgeschwindigkeitsregelvorrichtung

Publications (1)

Publication Number Publication Date
GB1399397A true true GB1399397A (en) 1975-07-02

Family

ID=10439031

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4589972A Expired GB1399397A (en) 1972-10-05 1972-10-05 Fluid flow control arrangements

Country Status (2)

Country Link
DE (1) DE2349422A1 (en)
GB (1) GB1399397A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594159A (en) * 1983-11-17 1986-06-10 Pharmacia Ab Process and apparatus for applying back pressure in a liquid chromatography system
US5478378A (en) * 1993-01-15 1995-12-26 Scientific Glass Technology Exploitatie B.V. Filter with quick-change coupling for cleaning gases
WO2000040961A1 (en) * 1998-12-30 2000-07-13 Varian B.V. Gaschromatographic device comprising an inlet system, a column and a pressure reducing means
WO2002014853A1 (en) * 2000-08-16 2002-02-21 Novartis Ag Microflow splitter
US6576047B2 (en) * 2001-01-10 2003-06-10 Abb Patent Gmbh Separation column for analyzing gases
EP1431709A2 (en) * 2002-12-19 2004-06-23 ASML Holding N.V. High-resolution gas gauge proximity sensor
EP1431710A3 (en) * 2002-12-19 2004-09-15 ASML Holding N.V. Liquid flow proximity sensor for use in immersion lithography
US6978658B1 (en) 2004-12-20 2005-12-27 Asml Holding N.V. Proximity sensor with self compensation for mechanism instability
US7017390B1 (en) 2004-12-07 2006-03-28 Asml Holding N.V. Proximity sensor nozzle shroud with flow curtain
US7472580B2 (en) 2005-12-30 2009-01-06 Asml Holding N.V. Pressure sensor
US7537739B2 (en) 2003-12-23 2009-05-26 Hte Ag Device and method for pressure and flow control in parallel reactors
US7549321B2 (en) 2005-12-29 2009-06-23 Asml Holding N.V. Pressure sensor

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4594159A (en) * 1983-11-17 1986-06-10 Pharmacia Ab Process and apparatus for applying back pressure in a liquid chromatography system
US5478378A (en) * 1993-01-15 1995-12-26 Scientific Glass Technology Exploitatie B.V. Filter with quick-change coupling for cleaning gases
WO2000040961A1 (en) * 1998-12-30 2000-07-13 Varian B.V. Gaschromatographic device comprising an inlet system, a column and a pressure reducing means
WO2002014853A1 (en) * 2000-08-16 2002-02-21 Novartis Ag Microflow splitter
US6576047B2 (en) * 2001-01-10 2003-06-10 Abb Patent Gmbh Separation column for analyzing gases
US7472579B2 (en) 2002-12-19 2009-01-06 Asml Holding N.V. Liquid flow proximity sensor for use in immersion lithography
EP1431709A3 (en) * 2002-12-19 2004-09-15 ASML Holding N.V. High-resolution gas gauge proximity sensor
EP1431710A3 (en) * 2002-12-19 2004-09-15 ASML Holding N.V. Liquid flow proximity sensor for use in immersion lithography
US7124624B2 (en) 2002-12-19 2006-10-24 Asml Holding N.V. High-resolution gas gauge proximity sensor
US7010958B2 (en) 2002-12-19 2006-03-14 Asml Holding N.V. High-resolution gas gauge proximity sensor
EP1431709A2 (en) * 2002-12-19 2004-06-23 ASML Holding N.V. High-resolution gas gauge proximity sensor
US7021119B2 (en) 2002-12-19 2006-04-04 Asml Holding N.V. Liquid flow proximity sensor for use in immersion lithography
CN100427881C (en) 2002-12-19 2008-10-22 Asml控股股份有限公司 High seeparation sharpness gasometer-type approach sensor
US7867458B2 (en) 2003-12-23 2011-01-11 Hte Aktiengesellschaft The High Throughtput Experimentation Company Device and method for pressure and flow control in parallel reactors
US7537739B2 (en) 2003-12-23 2009-05-26 Hte Ag Device and method for pressure and flow control in parallel reactors
US8383050B2 (en) 2003-12-23 2013-02-26 Hte Ag Device and method for pressure and flow control in parallel reactors
US7140233B2 (en) 2004-12-07 2006-11-28 Asml Holding N.V. Immersion lithography proximity sensor having a nozzle shroud with flow curtain
US7017390B1 (en) 2004-12-07 2006-03-28 Asml Holding N.V. Proximity sensor nozzle shroud with flow curtain
US6978658B1 (en) 2004-12-20 2005-12-27 Asml Holding N.V. Proximity sensor with self compensation for mechanism instability
US7549321B2 (en) 2005-12-29 2009-06-23 Asml Holding N.V. Pressure sensor
US7472580B2 (en) 2005-12-30 2009-01-06 Asml Holding N.V. Pressure sensor

Also Published As

Publication number Publication date Type
DE2349422A1 (en) 1974-04-11 application

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee