GB2021777A - Differential pressure transducer - Google Patents

Differential pressure transducer

Info

Publication number
GB2021777A
GB2021777A GB7914866A GB7914866A GB2021777A GB 2021777 A GB2021777 A GB 2021777A GB 7914866 A GB7914866 A GB 7914866A GB 7914866 A GB7914866 A GB 7914866A GB 2021777 A GB2021777 A GB 2021777A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
capsule
transducer
housing
displacement
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
GB7914866A
Other versions
GB2021777B (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.)
Schlumberger UK Holdings Ltd
Original Assignee
Sangamo Westom Controls 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 Sangamo Westom Controls Ltd filed Critical Sangamo Westom Controls Ltd
Priority to GB7914866A priority Critical patent/GB2021777B/en
Publication of GB2021777A publication Critical patent/GB2021777A/en
Application granted granted Critical
Publication of GB2021777B publication Critical patent/GB2021777B/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
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/007—Transmitting or indicating the displacement of flexible diaphragms using variations in inductance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/10—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in inductance, i.e. electric circuits therefor
    • G01L9/105—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means by making use of variations in inductance, i.e. electric circuits therefor with temperature compensating means

Landscapes

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

Abstract

A differential pressure transducer 10, primarily for measuring gauge pressure, comprises first and second identical, substantially cylindrical, sealed capsule assemblies, 30, 32, each having a circular diaphragm at one axial end, one being indicated at 44. The capsule assemblies are welded into the opposite ends of a cylindrical housing 16, 18, with the diaphragms facing outwardly. The housing is designed, 14, 20, to permit the transducer to be mounted in the wall of a pipe or chamber, with the diaphragm of one capsule subjected to the fluid pressure in the pipe or chamber and the diaphragm of the other capsule subjected to ambient atmospheric pressure. Respective inductive displacement sensors produce respective signals indicative of diaphragm displacement. The use of sealed capsules ensures that if a diaphragm ruptures, fluid loss cannot occur. Each capsule (Figure 2) may be formed with a tubular portion (38) projecting away from the diaphragm (44) and housing a displacement transducer core (55) mechanically coupled to the diaphragm (44), a set of transducer coils (58, 60) being dispersed around the tubular portion (38). <IMAGE>
GB7914866A 1978-05-30 1979-04-30 Differential pressure transducer Expired GB2021777B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7914866A GB2021777B (en) 1978-05-30 1979-04-30 Differential pressure transducer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2448178 1978-05-30
GB7914866A GB2021777B (en) 1978-05-30 1979-04-30 Differential pressure transducer

Publications (2)

Publication Number Publication Date
GB2021777A true GB2021777A (en) 1979-12-05
GB2021777B GB2021777B (en) 1982-10-06

Family

ID=26257139

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7914866A Expired GB2021777B (en) 1978-05-30 1979-04-30 Differential pressure transducer

Country Status (1)

Country Link
GB (1) GB2021777B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2555742A1 (en) * 1983-11-25 1985-05-31 Sereg Soc Effective-pressure inductive sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2555742A1 (en) * 1983-11-25 1985-05-31 Sereg Soc Effective-pressure inductive sensor

Also Published As

Publication number Publication date
GB2021777B (en) 1982-10-06

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Legal Events

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