GB1421624A - Transducer - Google Patents

Transducer

Info

Publication number
GB1421624A
GB1421624A GB535273A GB535273A GB1421624A GB 1421624 A GB1421624 A GB 1421624A GB 535273 A GB535273 A GB 535273A GB 535273 A GB535273 A GB 535273A GB 1421624 A GB1421624 A GB 1421624A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
coil
chamber
pair
conductors
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
GB535273A
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.)
Garrett Corp
Original Assignee
Garrett 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 Garrett Corp filed Critical Garrett Corp
Publication of GB1421624A publication Critical patent/GB1421624A/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
    • G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/02—Arrangements for preventing, or for compensating for, effects of inclination or acceleration of the measuring device; Zero-setting means
    • 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
    • G01L9/0072—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance
    • G01L9/0075—Transmitting or indicating the displacement of flexible diaphragms using variations in capacitance using a ceramic diaphragm, e.g. alumina, fused quartz, glass

Landscapes

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

Abstract

1421624 Pressure transducers GARRETT CORP 2 Feb 1973 [4 Feb 1972] 5352/73 Heading G1N A pressure transducer consists of a pair of diaphragms 36, 38 constructed and mounted so that they move in unison when subjected to unwanted acceleration forces, both faces of diaphragm 36 and the upper face of diaphragm 38 being subjected to a reference pressure in a chamber 28 via bores 48, 52 (and two others, not shown) and bores 64, 68 (and two other not shown) in diaphragm 36. The lower face of diaphragm 36 is concave and is provided with a pair of plates 42, 44 which form with a common plate 46 on the diaphragm 38 a pair of series connected capacitors. The plates 42, 44 extend into respective bores in the diaphragm 36 where they are connected to respective conductors 82, 84. A coil 80 is connected to these conductors to thereby form a tank circuit with the capacitors. This circuit may be coupled to a coil or coils surrounding the chamber 24 to determine the frequency of an oscillator. Alternatively conductors may extend through the wall of chamber 24 to be connected to the coil 80. The coil 80 may be omitted. In an alternative embodiment, Fig. 7 (not shown) the upper diaphragm has a plane surface and is separated from the lower diaphragm by a spacer. In use, the transducer is mounted on a base 14 in a housing, the base being secured to the housing with a nut 18 and bolt 20. A bore 22 in the nut communicates the pressure to be measured to the lower diaphragm 38.
GB535273A 1972-02-04 1973-02-02 Transducer Expired GB1421624A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22346272A 1972-02-04 1972-02-04

Publications (1)

Publication Number Publication Date
GB1421624A true GB1421624A (en) 1976-01-21

Family

ID=22836600

Family Applications (1)

Application Number Title Priority Date Filing Date
GB535273A Expired GB1421624A (en) 1972-02-04 1973-02-02 Transducer

Country Status (5)

Country Link
JP (1) JPS5525373B2 (en)
CA (1) CA968464A (en)
DE (1) DE2303465C3 (en)
FR (1) FR2170747A5 (en)
GB (1) GB1421624A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5033387U (en) * 1973-07-20 1975-04-10
DE3135511C2 (en) * 1981-09-08 1986-03-20 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., 8000 München Pressure sensor, consisting of a cylindrical cup circle with an end face designed as a membrane
JPH0319270Y2 (en) * 1985-08-16 1991-04-23
JPH086275Y2 (en) * 1987-12-19 1996-02-21 株式会社トーキン Capacitive load sensor
DE4111119A1 (en) * 1991-04-03 1992-10-08 Univ Chemnitz Tech Stackable micro-mechanical capacitative pressure measuring cell - has distance limiters on electrode cover or diaphragm and temp. dependent resistance path on electrode cover
DK0992779T3 (en) * 1998-10-06 2003-09-15 Vibro Meter Ag Acceleration compensated pressure gauge

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2808545A (en) * 1955-01-24 1957-10-01 Walter J Hirtreiter Pressure pick-up-differential-type acceleration-free
US3040583A (en) * 1959-12-10 1962-06-26 United Aircraft Corp Optical pressure transducer
GB949433A (en) * 1962-07-19 1964-02-12 Rosemount Engineering A G Improvements in or relating to pressure transducers
FR1396745A (en) * 1964-05-22 1965-04-23 Ultra Electronics Ltd Electromechanical transducer
US3356963A (en) * 1966-06-23 1967-12-05 Willard E Buck Fused quartz motion sensitive transducer
US3405559A (en) * 1966-11-07 1968-10-15 United Aircraft Corp Pressure transducer
US3529468A (en) * 1968-01-02 1970-09-22 Teledyne Inc Meter for measuring compressive stress in earthen masses and the like

Also Published As

Publication number Publication date
JPS4885282A (en) 1973-11-12
DE2303465C3 (en) 1981-09-17
DE2303465B2 (en) 1980-12-11
DE2303465A1 (en) 1973-08-16
FR2170747A5 (en) 1973-09-14
JPS5525373B2 (en) 1980-07-05
CA968464A (en) 1975-05-27

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee