GB312509A - Improvements in pressure gauges - Google Patents

Improvements in pressure gauges

Info

Publication number
GB312509A
GB312509A GB1704028A GB1704028A GB312509A GB 312509 A GB312509 A GB 312509A GB 1704028 A GB1704028 A GB 1704028A GB 1704028 A GB1704028 A GB 1704028A GB 312509 A GB312509 A GB 312509A
Authority
GB
United Kingdom
Prior art keywords
casing
pressure
electrode
crystal
piezo
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
GB1704028A
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.)
ROBERT KNOX HEZLET
Original Assignee
ROBERT KNOX HEZLET
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 ROBERT KNOX HEZLET filed Critical ROBERT KNOX HEZLET
Priority to GB1704028A priority Critical patent/GB312509A/en
Publication of GB312509A publication Critical patent/GB312509A/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

Landscapes

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

Abstract

312,509. Hezlet, R. K., and Condliffe, G. E. June 12, 1928. Pressure gauges.-Comprises a pressure gauge using a piezo-electric crystal isolated from the source of pressure by a fluid medium through which the pressure is transmitted to the crystal. The steel casing a adapted to be screwed to a gun or other pressure vessel carries an electrode c adapted to be connected to the indicating or recording apparatus. Within the casing is mounted by ebonite blocks or other means a piezo-crystal e the opposite surfaces of which are coated with a thick copper deposit, one such surface e<2> being connected to the electrode c and the other e<1> to the casing by means of a spring f. A flexible disc g of leather closes the casing which is filled with petroleum jelly or other insulating mixture. In a modification two such crystals are used, their coatings e<2> of surfaces of similar polarity being in contact and connected to the electrode c, the coatings of the other surfaces-also of similar polarity-being connected by springs to the casing.
GB1704028A 1928-06-12 1928-06-12 Improvements in pressure gauges Expired GB312509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1704028A GB312509A (en) 1928-06-12 1928-06-12 Improvements in pressure gauges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1704028A GB312509A (en) 1928-06-12 1928-06-12 Improvements in pressure gauges

Publications (1)

Publication Number Publication Date
GB312509A true GB312509A (en) 1929-05-30

Family

ID=10088161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1704028A Expired GB312509A (en) 1928-06-12 1928-06-12 Improvements in pressure gauges

Country Status (1)

Country Link
GB (1) GB312509A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2340542A1 (en) * 1976-02-09 1977-09-02 Minnesota Mining & Mfg Temp. and voltage compensated electret sensor - has sensing circuit connected to two conductive layers for specified compensation
GB2204444A (en) * 1987-03-30 1988-11-09 Seikosha Kk Vibrator assembly
EP0450698A1 (en) * 1990-04-05 1991-10-09 Texas Instruments Holland B.V. Sensor for measuring the pressure of a medium, in particular for measuring the changing pressure in a diesel injection pump

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2340542A1 (en) * 1976-02-09 1977-09-02 Minnesota Mining & Mfg Temp. and voltage compensated electret sensor - has sensing circuit connected to two conductive layers for specified compensation
GB2204444A (en) * 1987-03-30 1988-11-09 Seikosha Kk Vibrator assembly
GB2204444B (en) * 1987-03-30 1991-03-20 Seikosha Kk Vibrator assembly
EP0450698A1 (en) * 1990-04-05 1991-10-09 Texas Instruments Holland B.V. Sensor for measuring the pressure of a medium, in particular for measuring the changing pressure in a diesel injection pump
US5111699A (en) * 1990-04-05 1992-05-12 Texas Instruments Incorporated Sensor for measuring the pressure of a medium

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