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GB660189A - Improvements in and relating to pressure gauges - Google Patents

Improvements in and relating to pressure gauges

Info

Publication number
GB660189A
GB660189A GB28077/49A GB2807749A GB660189A GB 660189 A GB660189 A GB 660189A GB 28077/49 A GB28077/49 A GB 28077/49A GB 2807749 A GB2807749 A GB 2807749A GB 660189 A GB660189 A GB 660189A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
piezo
nov
casing
relating
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
GB28077/49A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB660189A publication Critical patent/GB660189A/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
    • G01L23/00—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid
    • G01L23/08—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically
    • G01L23/10—Devices or apparatus for measuring or indicating or recording rapid changes, such as oscillations, in the pressure of steam, gas, or liquid; Indicators for determining work or energy of steam, internal-combustion, or other fluid-pressure engines from the condition of the working fluid operated electrically by pressure-sensitive members of the piezoelectric type
    • 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
    • G01L9/008—Transmitting or indicating the displacement of flexible diaphragms using piezoelectric devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

660,189. Electric pressure responsive devices. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 2, 1949.. [Nov. 9, 1848] No. 38077/49. Class 40 (i) [Also in Group XL (b)] A piezo-electric pressure gauge comprises a diaphragm 2 to one face of which is cemented a thin plate 3 of piezo-electric material electroded on opposite faces. The lower electrode is connected to earth through the diaphragm and casing, and a lead 6 is connected to the upper electrode. Flexure of the diaphragm strains the crystal in a direction parallel to its major faces to produce a voltage between the electrodes. The casing is formed with a screwed outlet 1 for connection to the source of pressure to be measured.
GB28077/49A 1948-11-09 1949-11-02 Improvements in and relating to pressure gauges Expired GB660189A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US660189XA 1948-11-09 1948-11-09

Publications (1)

Publication Number Publication Date
GB660189A true GB660189A (en) 1951-10-31

Family

ID=22066738

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28077/49A Expired GB660189A (en) 1948-11-09 1949-11-02 Improvements in and relating to pressure gauges

Country Status (1)

Country Link
GB (1) GB660189A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731946A (en) * 1984-02-29 1988-03-22 Dellareed Limited Bite indicators
EP1111360A3 (en) * 1999-12-24 2004-06-09 Denso Corporation Combustion pressure sensor device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4731946A (en) * 1984-02-29 1988-03-22 Dellareed Limited Bite indicators
EP1111360A3 (en) * 1999-12-24 2004-06-09 Denso Corporation Combustion pressure sensor device

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