GB1478315A - Pressure transducers - Google Patents

Pressure transducers

Info

Publication number
GB1478315A
GB1478315A GB2873373A GB2873373A GB1478315A GB 1478315 A GB1478315 A GB 1478315A GB 2873373 A GB2873373 A GB 2873373A GB 2873373 A GB2873373 A GB 2873373A GB 1478315 A GB1478315 A GB 1478315A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
ring
attached
flaps
coupling
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
GB2873373A
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.)
EMI Ltd
Original Assignee
EMI 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 EMI Ltd filed Critical EMI Ltd
Priority to GB2873373A priority Critical patent/GB1478315A/en
Publication of GB1478315A publication Critical patent/GB1478315A/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
    • G01L9/0051—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance
    • G01L9/0052—Transmitting or indicating the displacement of flexible diaphragms using variations in ohmic resistance of piezoresistive elements

Abstract

1478315 Pressure transducers EMI Ltd 14 June 1974 [16 June 1973] 28733/73 Heading H1K A pressure transducer comprises an edge supported diaphragm 1, and a beam 8 secured at one end to the support of the diaphragm, movements of the diaphragm being communicated to the beam which includes or carries strain gauges, by a coupling 3 attached to it and the diaphragm. The arrangement is such that on deflection of the diaphragm the beam flexes in opposite senses at two different points. In the embodiment the diaphragm, support and coupling together constitute a unitary member turned from beryllium copper, phosphor bronze, or stainless steel. For temperature compensation beam 8, centrally stiffened by flaps 9 is attached to a ring 7 which is in turn fixed to diametrically opposed flaps 5, 6 extending upward from diaphragm supporting ring 2, this ring and the beam having the same thermal expansion coefficient as adhesively attached silicon beam 11 which has a pair of PN isolated borondiffused strain gauges, located at its upper face between flaps 9 and each end of the beam and connected to form a bridge network. In an alternative form wire gauges may be used mounted on a metal beam directly attached to ring 2 and coupling 3 to which its expansion coefficient is matched.
GB2873373A 1974-06-14 1974-06-14 Pressure transducers Expired GB1478315A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2873373A GB1478315A (en) 1974-06-14 1974-06-14 Pressure transducers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2873373A GB1478315A (en) 1974-06-14 1974-06-14 Pressure transducers

Publications (1)

Publication Number Publication Date
GB1478315A true GB1478315A (en) 1977-06-29

Family

ID=10280241

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2873373A Expired GB1478315A (en) 1974-06-14 1974-06-14 Pressure transducers

Country Status (1)

Country Link
GB (1) GB1478315A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662226A (en) * 1985-01-29 1987-05-05 Desheng Wang Pressure transducer
EP0468098A2 (en) * 1990-07-27 1992-01-29 Data Instruments Inc. Method of manufacturing pressure transducers
EP0468398A1 (en) * 1990-07-24 1992-01-29 Pfister Messtechnik GmbH Pressure sensor and process for its manufacture
CN102865963A (en) * 2011-07-04 2013-01-09 台湾双叶工业股份有限公司 Digital display pressure meter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4662226A (en) * 1985-01-29 1987-05-05 Desheng Wang Pressure transducer
EP0468398A1 (en) * 1990-07-24 1992-01-29 Pfister Messtechnik GmbH Pressure sensor and process for its manufacture
EP0468098A2 (en) * 1990-07-27 1992-01-29 Data Instruments Inc. Method of manufacturing pressure transducers
EP0468098A3 (en) * 1990-07-27 1992-12-16 Data Instruments Gmbh Pressure transducers and method of manufacturing same
CN102865963A (en) * 2011-07-04 2013-01-09 台湾双叶工业股份有限公司 Digital display pressure meter

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee