DE3640718A1 - Membrankondensator zur messung sehr geringer pneumatischer wechseldruecke - Google Patents

Membrankondensator zur messung sehr geringer pneumatischer wechseldruecke

Info

Publication number
DE3640718A1
DE3640718A1 DE19863640718 DE3640718A DE3640718A1 DE 3640718 A1 DE3640718 A1 DE 3640718A1 DE 19863640718 DE19863640718 DE 19863640718 DE 3640718 A DE3640718 A DE 3640718A DE 3640718 A1 DE3640718 A1 DE 3640718A1
Authority
DE
Germany
Prior art keywords
base plate
ceramic base
membrane
annular mandrel
membrane capacitor
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
DE19863640718
Other languages
German (de)
English (en)
Other versions
DE3640718C2 (enExample
Inventor
Willi Apel
Walter Fabinski
Rudolf Jezdinsky
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.)
ABB Training Center GmbH and Co KG
Original Assignee
Hartmann and Braun AG
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 Hartmann and Braun AG filed Critical Hartmann and Braun AG
Priority to DE19863640718 priority Critical patent/DE3640718A1/de
Priority to DE8787115653T priority patent/DE3778310D1/de
Priority to EP87115653A priority patent/EP0268845B1/de
Publication of DE3640718A1 publication Critical patent/DE3640718A1/de
Application granted granted Critical
Publication of DE3640718C2 publication Critical patent/DE3640718C2/de
Granted 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
DE19863640718 1986-11-28 1986-11-28 Membrankondensator zur messung sehr geringer pneumatischer wechseldruecke Granted DE3640718A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE19863640718 DE3640718A1 (de) 1986-11-28 1986-11-28 Membrankondensator zur messung sehr geringer pneumatischer wechseldruecke
DE8787115653T DE3778310D1 (de) 1986-11-28 1987-10-26 Membrankondensator zur messung sehr geringer pneumatischer wechseldruecke.
EP87115653A EP0268845B1 (de) 1986-11-28 1987-10-26 Membrankondensator zur Messung sehr geringer pneumatischer Wechseldrücke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863640718 DE3640718A1 (de) 1986-11-28 1986-11-28 Membrankondensator zur messung sehr geringer pneumatischer wechseldruecke

Publications (2)

Publication Number Publication Date
DE3640718A1 true DE3640718A1 (de) 1988-06-09
DE3640718C2 DE3640718C2 (enExample) 1989-05-24

Family

ID=6315017

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19863640718 Granted DE3640718A1 (de) 1986-11-28 1986-11-28 Membrankondensator zur messung sehr geringer pneumatischer wechseldruecke
DE8787115653T Expired - Fee Related DE3778310D1 (de) 1986-11-28 1987-10-26 Membrankondensator zur messung sehr geringer pneumatischer wechseldruecke.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE8787115653T Expired - Fee Related DE3778310D1 (de) 1986-11-28 1987-10-26 Membrankondensator zur messung sehr geringer pneumatischer wechseldruecke.

Country Status (2)

Country Link
EP (1) EP0268845B1 (enExample)
DE (2) DE3640718A1 (enExample)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667786A (en) * 1950-02-11 1954-02-02 Cons Eng Corp Capacitor pressure gauge
DE2848856A1 (de) * 1977-11-10 1979-05-17 Shih Ying Lee Kapazitiver druckwandler
DE7922944U1 (de) * 1979-08-10 1979-11-22 Hartmann & Braun Ag, 6000 Frankfurt Membrankondensator zur messung sehr geringer pneumatischer wechseldruecke in gasanalysegeraeten
DE3404262A1 (de) * 1983-03-09 1984-09-13 Fuji Electric Co., Ltd., Kawasaki Kapazitiver messfuehler
GB2162319A (en) * 1984-06-06 1986-01-29 Furness Controls Ltd Pressure sensitive capacitor

Family Cites Families (1)

* 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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2667786A (en) * 1950-02-11 1954-02-02 Cons Eng Corp Capacitor pressure gauge
DE2848856A1 (de) * 1977-11-10 1979-05-17 Shih Ying Lee Kapazitiver druckwandler
DE7922944U1 (de) * 1979-08-10 1979-11-22 Hartmann & Braun Ag, 6000 Frankfurt Membrankondensator zur messung sehr geringer pneumatischer wechseldruecke in gasanalysegeraeten
DE3404262A1 (de) * 1983-03-09 1984-09-13 Fuji Electric Co., Ltd., Kawasaki Kapazitiver messfuehler
GB2162319A (en) * 1984-06-06 1986-01-29 Furness Controls Ltd Pressure sensitive capacitor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
JP-Abstr. 57-97422A *

Also Published As

Publication number Publication date
DE3640718C2 (enExample) 1989-05-24
EP0268845B1 (de) 1992-04-15
EP0268845A2 (de) 1988-06-01
EP0268845A3 (en) 1990-07-04
DE3778310D1 (de) 1992-05-21

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee