SE9601581L - Device for differential pressure measurement as well as use of the device for density measurement - Google Patents

Device for differential pressure measurement as well as use of the device for density measurement

Info

Publication number
SE9601581L
SE9601581L SE9601581A SE9601581A SE9601581L SE 9601581 L SE9601581 L SE 9601581L SE 9601581 A SE9601581 A SE 9601581A SE 9601581 A SE9601581 A SE 9601581A SE 9601581 L SE9601581 L SE 9601581L
Authority
SE
Sweden
Prior art keywords
sensors
servomedium
liquids
differential pressure
membranes
Prior art date
Application number
SE9601581A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE506368C2 (en
SE9601581D0 (en
Inventor
Hans Persson
Original Assignee
Hans Persson
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 Hans Persson filed Critical Hans Persson
Priority to SE9601581A priority Critical patent/SE506368C2/en
Publication of SE9601581D0 publication Critical patent/SE9601581D0/en
Priority to AU27204/97A priority patent/AU2720497A/en
Priority to PCT/SE1997/000690 priority patent/WO1997040350A1/en
Priority to EP97921056A priority patent/EP0895582A1/en
Publication of SE9601581L publication Critical patent/SE9601581L/en
Publication of SE506368C2 publication Critical patent/SE506368C2/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
    • G01F23/16—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid
    • G01F23/164—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid using a diaphragm, bellow as transmitting element
    • 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
    • G01F1/36—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 the pressure or differential pressure being created by the use of flow constriction
    • G01F1/38—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 the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule
    • G01F1/383—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 the pressure or differential pressure being created by the use of flow constriction the pressure or differential pressure being measured by means of a movable element, e.g. diaphragm, piston, Bourdon tube or flexible capsule with electrical or electro-mechanical indication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
    • G01L11/004—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by the use of counterbalancing forces
    • G01L11/006—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00 by the use of counterbalancing forces hydraulic or pneumatic counterbalancing forces
    • 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
    • G01N9/26—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity by measuring pressure differences

Abstract

There is described a device that is useful in determining pressure gradients in liquids, for instance. Pressure sensing is effected with the aid of two sensors (7, 8) mounted at a predetermined distance apart, wherein the membranes (9, 10) of respective sensors are in connection with a servomedium. The device includes separate servomedium pressure regulators (11, 12) which balance out each of the membranes to equilibrium with liquid outside the sensors in response to control signals (3, 4) delivered by conventional detectors in the sensors. The servomedium in respective sensors is connected to a common differential pressure measuring device (13). The structurally simple measuring system is particularly suitable for determining the intensity of liquids under difficult conditions, for instance in systems having varying liquid levels, in corrosive environments, in cases when the liquids are heavily contaminated, under fluctuating pressures and temperatures, and so on.
SE9601581A 1996-04-25 1996-04-25 Device for differential pressure measurement as well as use of the device for density measurement SE506368C2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
SE9601581A SE506368C2 (en) 1996-04-25 1996-04-25 Device for differential pressure measurement as well as use of the device for density measurement
AU27204/97A AU2720497A (en) 1996-04-25 1997-04-24 Differential pressure device
PCT/SE1997/000690 WO1997040350A1 (en) 1996-04-25 1997-04-24 Differential pressure device
EP97921056A EP0895582A1 (en) 1996-04-25 1997-04-24 Differential pressure device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9601581A SE506368C2 (en) 1996-04-25 1996-04-25 Device for differential pressure measurement as well as use of the device for density measurement

Publications (3)

Publication Number Publication Date
SE9601581D0 SE9601581D0 (en) 1996-04-25
SE9601581L true SE9601581L (en) 1997-10-26
SE506368C2 SE506368C2 (en) 1997-12-08

Family

ID=20402343

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9601581A SE506368C2 (en) 1996-04-25 1996-04-25 Device for differential pressure measurement as well as use of the device for density measurement

Country Status (4)

Country Link
EP (1) EP0895582A1 (en)
AU (1) AU2720497A (en)
SE (1) SE506368C2 (en)
WO (1) WO1997040350A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPP240198A0 (en) 1998-03-17 1998-04-09 Resmed Limited An apparatus for supplying breathable gas
FR3047067B1 (en) 2016-01-22 2019-07-05 Elvesys SYSTEM FOR MEASURING LIQUID FLOW AND USE THEREOF
FR3126773B1 (en) 2021-09-08 2023-09-01 Elvesys LIQUID FLOW MEASUREMENT SYSTEM IN A MICRO-FLUIDIC PIPING

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1149592B (en) * 1982-02-10 1986-12-03 Valcom Di Valletti E TRANSMITTER DEVICE STRUCTURE FOR MEASURING THE OPERATING PRESSURE OF A SYSTEM
US4561307A (en) * 1984-01-26 1985-12-31 Smith George E Liquid differential pressure measurement using a vertical manifold
US4614118A (en) * 1985-02-12 1986-09-30 Chevron Research Company Non-compliant pressure cell
US4625553A (en) * 1985-04-12 1986-12-02 Dresser Industries, Inc. System to determine the level and weight of liquid in a tank or the like

Also Published As

Publication number Publication date
EP0895582A1 (en) 1999-02-10
AU2720497A (en) 1997-11-12
SE506368C2 (en) 1997-12-08
WO1997040350A1 (en) 1997-10-30
SE9601581D0 (en) 1996-04-25

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