GB1450472A - Force balance differential pressure gauge - Google Patents

Force balance differential pressure gauge

Info

Publication number
GB1450472A
GB1450472A GB181474A GB181474A GB1450472A GB 1450472 A GB1450472 A GB 1450472A GB 181474 A GB181474 A GB 181474A GB 181474 A GB181474 A GB 181474A GB 1450472 A GB1450472 A GB 1450472A
Authority
GB
United Kingdom
Prior art keywords
bellows
position error
differential pressure
coil
jan
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
GB181474A
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.)
SPX Corp
Original Assignee
General Signal Corp
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 General Signal Corp filed Critical General Signal Corp
Publication of GB1450472A publication Critical patent/GB1450472A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01L11/008—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 electrostatic or electromagnetic counterbalancing forces
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
    • G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
    • G01L13/023—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using bellows

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

1450472 Measuring differential pressure electrically GENERAL SIGNAL CORP 15 Jan 1974 [15 Jan 1973] 01814/74 Heading G1N A force-balancd differential pressure gauge includes a casing 50 with first and second pressure chambers 62, 64 and a bellows 72 sensing the pressure difference therebetween, a differential transformer 84 with a core 82 movable by the bellows and feeding a position error signal to a coil 100 on a sleeve 102 disposed in the air-gap 103 of a magnet assembly 104, whereby the bellows is restored to its rest position and the current supplied to the coil provides a measure of the pressure difference. The coil current is fed over a two-conductor transmission line which also carries the supply voltage from a remote measuring station having a D.C. supply connected to terminals 200, 202. The feedback circuit may include a capacitor 113 providing integration of the position error signal at the input of amplifier 110 whereby the bellows is restored with a zero steady-state position error. Diodes 210, 212, 230 and transistor 214 are arranged to provide regulated bi-polar voltages for the amplifiers 112, 114, 116. Amplifier 114 is connected as a Colpitts oscillator to energize the transformer primary winding at 2 kilohertz.
GB181474A 1973-01-15 1974-01-15 Force balance differential pressure gauge Expired GB1450472A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US32344673A 1973-01-15 1973-01-15

Publications (1)

Publication Number Publication Date
GB1450472A true GB1450472A (en) 1976-09-22

Family

ID=23259234

Family Applications (1)

Application Number Title Priority Date Filing Date
GB181474A Expired GB1450472A (en) 1973-01-15 1974-01-15 Force balance differential pressure gauge

Country Status (8)

Country Link
JP (1) JPS49105579A (en)
AU (1) AU6430674A (en)
BR (1) BR7400236D0 (en)
CA (1) CA1017164A (en)
DE (1) DE2401773A1 (en)
FR (1) FR2214123B1 (en)
GB (1) GB1450472A (en)
IT (1) IT1008699B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024729A2 (en) * 1979-08-31 1981-03-11 Siemens Aktiengesellschaft Device for securing to a base plate pneumatic construction parts exposable to pressure

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4994838B2 (en) * 2003-07-31 2012-08-08 コンティネンタル・テーベス・アクチエンゲゼルシヤフト・ウント・コンパニー・オッフェネ・ハンデルスゲゼルシヤフト Method and apparatus for measuring hydraulic pressure by a control device
DE102013222516A1 (en) * 2012-11-15 2014-06-12 Continental Teves Ag & Co. Ohg Pressure sensor used in vehicle brake system, has expansion element whose left end is made to face induction elements, while right end of expansion element is opened to receive pressure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620665A (en) * 1948-03-19 1952-12-09 British Iron Steel Research Sensitive manometer
CH288197A (en) * 1951-01-27 1953-01-15 Amsler Alfred J & Co Measuring device for measuring pressure differences, in particular dynamic pressures.
US2788664A (en) * 1952-12-19 1957-04-16 Norden Ketay Corp Fluid pressure meter
FR1364146A (en) * 1963-05-10 1964-06-19 Crouzet Sa Method and device for measuring forces by applying the hall effect

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0024729A2 (en) * 1979-08-31 1981-03-11 Siemens Aktiengesellschaft Device for securing to a base plate pneumatic construction parts exposable to pressure
EP0024729A3 (en) * 1979-08-31 1981-12-30 Siemens Aktiengesellschaft Device for securing to a base plate pneumatic construction parts exposable to pressure

Also Published As

Publication number Publication date
FR2214123A1 (en) 1974-08-09
BR7400236D0 (en) 1974-08-22
AU6430674A (en) 1975-07-10
FR2214123B1 (en) 1977-09-09
CA1017164A (en) 1977-09-13
DE2401773A1 (en) 1974-08-01
IT1008699B (en) 1976-11-30
JPS49105579A (en) 1974-10-05

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed