GB8809715D0 - Fluid mass flow & density sensor - Google Patents

Fluid mass flow & density sensor

Info

Publication number
GB8809715D0
GB8809715D0 GB888809715A GB8809715A GB8809715D0 GB 8809715 D0 GB8809715 D0 GB 8809715D0 GB 888809715 A GB888809715 A GB 888809715A GB 8809715 A GB8809715 A GB 8809715A GB 8809715 D0 GB8809715 D0 GB 8809715D0
Authority
GB
United Kingdom
Prior art keywords
mass flow
density sensor
fluid mass
fluid
density
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.)
Pending
Application number
GB888809715A
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.)
PA Consulting Services Ltd
Original Assignee
PA Consulting Services 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 PA Consulting Services Ltd filed Critical PA Consulting Services Ltd
Priority to GB888809715A priority Critical patent/GB8809715D0/en
Publication of GB8809715D0 publication Critical patent/GB8809715D0/en
Priority to GB8908527A priority patent/GB2221302A/en
Pending 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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/8404—Coriolis or gyroscopic mass flowmeters details of flowmeter manufacturing methods
    • 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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
    • G01F1/8422—Coriolis or gyroscopic mass flowmeters constructional details exciters
    • 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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
    • G01F1/8427—Coriolis or gyroscopic mass flowmeters constructional details detectors
    • 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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/8409—Coriolis or gyroscopic mass flowmeters constructional details
    • G01F1/844—Coriolis or gyroscopic mass flowmeters constructional details microfluidic or miniaturised flowmeters
    • G01F1/8445—Coriolis or gyroscopic mass flowmeters constructional details microfluidic or miniaturised flowmeters micromachined flowmeters
    • 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
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G01F1/78—Direct mass flowmeters
    • G01F1/80—Direct mass flowmeters operating by measuring pressure, force, momentum, or frequency of a fluid flow to which a rotational movement has been imparted
    • G01F1/84—Coriolis or gyroscopic mass flowmeters
    • G01F1/845—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits
    • G01F1/8468—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits
    • G01F1/8472—Coriolis or gyroscopic mass flowmeters arrangements of measuring means, e.g., of measuring conduits vibrating measuring conduits having curved measuring conduits, i.e. whereby the measuring conduits' curved center line lies within a plane
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
    • G01N9/32—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by using flow properties of fluids, e.g. flow through tubes or apertures
GB888809715A 1988-04-25 1988-04-25 Fluid mass flow & density sensor Pending GB8809715D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB888809715A GB8809715D0 (en) 1988-04-25 1988-04-25 Fluid mass flow & density sensor
GB8908527A GB2221302A (en) 1988-04-25 1989-04-14 Coriolis-effect fluid mass flow and density sensor made by a micromachining method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888809715A GB8809715D0 (en) 1988-04-25 1988-04-25 Fluid mass flow & density sensor

Publications (1)

Publication Number Publication Date
GB8809715D0 true GB8809715D0 (en) 1988-06-02

Family

ID=10635782

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888809715A Pending GB8809715D0 (en) 1988-04-25 1988-04-25 Fluid mass flow & density sensor
GB8908527A Withdrawn GB2221302A (en) 1988-04-25 1989-04-14 Coriolis-effect fluid mass flow and density sensor made by a micromachining method

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB8908527A Withdrawn GB2221302A (en) 1988-04-25 1989-04-14 Coriolis-effect fluid mass flow and density sensor made by a micromachining method

Country Status (1)

Country Link
GB (2) GB8809715D0 (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5522382A (en) 1987-06-26 1996-06-04 Rescare Limited Device and method for treating obstructed breathing having a delay/ramp feature
DE4327052C3 (en) * 1993-08-12 1998-10-22 Krohne Ag Mass flow meter
US6675797B1 (en) 1993-11-05 2004-01-13 Resmed Limited Determination of patency of the airway
EP1900324B1 (en) 1993-11-05 2009-06-03 ResMed Limited Apparatus for determining patency of the airway
DE4435809A1 (en) * 1994-10-07 1996-04-11 Krohne Messtechnik Kg Measuring device for flowing media
AUPN236595A0 (en) 1995-04-11 1995-05-11 Rescare Limited Monitoring of apneic arousals
AUPN344195A0 (en) 1995-06-08 1995-07-06 Rescare Limited Monitoring of oro-nasal respiration
AUPN474195A0 (en) * 1995-08-09 1995-08-31 Rescare Limited Apparatus and methods for oro-nasal respiration monitoring
EP0862474A4 (en) 1995-09-18 2000-05-03 Resmed Ltd Pressure control in cpap treatment or assisted respiration
AUPN616795A0 (en) 1995-10-23 1995-11-16 Rescare Limited Ipap duration in bilevel cpap or assisted respiration treatment
DE19605923C2 (en) * 1996-02-17 2001-09-13 Danfoss As Flow meter
AUPN973596A0 (en) 1996-05-08 1996-05-30 Resmed Limited Control of delivery pressure in cpap treatment or assisted respiration
AUPO163896A0 (en) 1996-08-14 1996-09-05 Resmed Limited Determination of respiratory airflow
AUPO247496A0 (en) 1996-09-23 1996-10-17 Resmed Limited Assisted ventilation to match patient respiratory need
AUPO418696A0 (en) 1996-12-12 1997-01-16 Resmed Limited A substance delivery apparatus
AUPO742297A0 (en) 1997-06-18 1997-07-10 Resmed Limited An apparatus for supplying breathable gas
AUPP026997A0 (en) 1997-11-07 1997-12-04 Resmed Limited Administration of cpap treatment pressure in presence of apnea
US6748813B1 (en) 1998-12-08 2004-06-15 Emerson Electric Company Coriolis mass flow controller
US6513392B1 (en) 1998-12-08 2003-02-04 Emerson Electric Co. Coriolis mass flow controller
US6526839B1 (en) * 1998-12-08 2003-03-04 Emerson Electric Co. Coriolis mass flow controller and capacitive pick off sensor
BR9915802B1 (en) * 1998-12-08 2011-12-13 coriolis mass flow control with capacitive sensor and controller, and device and method for determining mass flow.
JP2006514281A (en) * 2003-02-04 2006-04-27 マイクロ・モーション・インコーポレーテッド A small Coriolis mass flowmeter with a small mass drive source
US7168329B2 (en) 2003-02-04 2007-01-30 Micro Motion, Inc. Low mass Coriolis mass flowmeter having a low mass drive system
US7228735B2 (en) 2005-02-03 2007-06-12 Integrated Sensing Systems, Inc. Fluid sensing device with integrated bypass and process therefor
WO2009111487A1 (en) 2008-03-03 2009-09-11 Integrated Sensing Systems, Inc. Process of making a microtube and microfluidic devices formed therewith
DE102008039045A1 (en) * 2008-08-21 2010-02-25 Endress + Hauser Flowtec Ag Sensor in micromechanical design
US7930115B2 (en) 2008-10-15 2011-04-19 Honeywell International Inc. Low-power flow meter and related method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239703B1 (en) * 1986-01-07 1991-06-05 THORN EMI plc Force-sensitive flow sensor

Also Published As

Publication number Publication date
GB8908527D0 (en) 1989-06-01
GB2221302A (en) 1990-01-31

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