NO941362L - Fremgangsmåte og anordning ved kapasitans temperatur kompensasjon - Google Patents
Fremgangsmåte og anordning ved kapasitans temperatur kompensasjonInfo
- Publication number
- NO941362L NO941362L NO941362A NO941362A NO941362L NO 941362 L NO941362 L NO 941362L NO 941362 A NO941362 A NO 941362A NO 941362 A NO941362 A NO 941362A NO 941362 L NO941362 L NO 941362L
- Authority
- NO
- Norway
- Prior art keywords
- capacitance
- module
- temperature compensation
- capacitance temperature
- removable module
- Prior art date
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
- G01L9/12—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 by making use of variations in capacitance, i.e. electric circuits therefor
- G01L9/125—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 by making use of variations in capacitance, i.e. electric circuits therefor with temperature compensating means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
En toleders sender (12) som påvirkes av en trykkfor- skjellsføler (30) innbefatter en fast modul (28) og en uttagbar modul (26). Den faste modul (28) er beregnet på å bli tilkoblet en analog uttagbar modul (26) med en utlignende kapasitans (MACDA) eller en digital uttagbar modul med en utligningskapasitans (CDD). Kretsen for kapasitansutligning er innbefattet i den faste modul (28) som også innbefatter en utlignende kapasitans (CDM) (124) som er valgt slik at MACj}A blir lik CDD når den analoge uttagbare modul (26) og den digitale uttagbare modul blir kalibrert. Dette skaper en trykkoverføringsfunksjon som er mer linearisert og mindre påvirket av temperaturvariasjoner.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/775,311 US5237285A (en) | 1991-10-18 | 1991-10-18 | Method and apparatus for capacitance temperature compensation and manufacturability in a dual plate capacitive pressure transmitter |
PCT/US1992/008733 WO1993008479A1 (en) | 1991-10-18 | 1992-10-13 | Method and apparatus for capacitance temperature compensation and manufacturability in a dual plate capacitive pressure transmitter |
Publications (2)
Publication Number | Publication Date |
---|---|
NO941362D0 NO941362D0 (no) | 1994-04-15 |
NO941362L true NO941362L (no) | 1994-06-08 |
Family
ID=25104014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO941362A NO941362L (no) | 1991-10-18 | 1994-04-15 | Fremgangsmåte og anordning ved kapasitans temperatur kompensasjon |
Country Status (21)
Country | Link |
---|---|
US (2) | US5237285A (no) |
EP (1) | EP0608355B1 (no) |
JP (1) | JP3233404B2 (no) |
KR (1) | KR100196808B1 (no) |
AU (1) | AU662934B2 (no) |
BR (1) | BR9206643A (no) |
CA (1) | CA2119437A1 (no) |
DE (1) | DE69229871D1 (no) |
EG (1) | EG20331A (no) |
FI (1) | FI941751A0 (no) |
HK (1) | HK1009985A1 (no) |
HU (1) | HU216666B (no) |
IL (1) | IL103209A (no) |
MX (1) | MX9205753A (no) |
MY (1) | MY108023A (no) |
NO (1) | NO941362L (no) |
RU (1) | RU2108556C1 (no) |
SG (1) | SG49261A1 (no) |
TW (1) | TW287284B (no) |
WO (1) | WO1993008479A1 (no) |
ZA (1) | ZA927996B (no) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5540086A (en) * | 1994-08-30 | 1996-07-30 | Kavlico Corporation | Oil deterioration sensor |
US5824889A (en) * | 1997-03-06 | 1998-10-20 | Kavlico Corporation | Capacitive oil deterioration and contamination sensor |
US5942692A (en) * | 1997-04-10 | 1999-08-24 | Mks Instruments, Inc. | Capacitive pressure sensing method and apparatus avoiding interelectrode capacitance by driving with in-phase excitation signals |
US5929754A (en) * | 1997-12-03 | 1999-07-27 | Kavlico Corporation | High-sensitivity capacitive oil deterioration and level sensor |
US6035694A (en) * | 1999-03-12 | 2000-03-14 | I/O Of Austin, Inc. | Method and apparatus for calibration of stray capacitance mismatch in a closed loop electro-mechanical accelerometer |
US6813954B2 (en) * | 2001-05-25 | 2004-11-09 | Panametrics, Inc. | High sensitivity pressure sensor with long term stability |
US20090015269A1 (en) * | 2007-07-13 | 2009-01-15 | Pinto Gino A | Stray Capacitance Compensation for a Capacitive Sensor |
JP5136593B2 (ja) * | 2010-05-21 | 2013-02-06 | 横河電機株式会社 | 分析装置 |
RU208475U1 (ru) * | 2021-09-22 | 2021-12-21 | Акционерное общество "Научно-исследовательский институт физических измерений" | Емкостный датчик давления |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3516132A (en) * | 1968-04-08 | 1970-06-23 | Gen Electric | Process for producing cryogenic capacitors |
US3519923A (en) * | 1968-04-16 | 1970-07-07 | United Aircraft Corp | Capacitive transducer system independent of stray capacitance |
US3949280A (en) * | 1975-02-18 | 1976-04-06 | Mitsumi Electric Co., Ltd. | Miniature variable capacitor and method of manufacture |
US4145619A (en) * | 1976-12-03 | 1979-03-20 | Robertshaw Controls Company | Two wire capacitance transmitter |
GB2048488B (en) * | 1979-04-26 | 1983-04-27 | Rosemount Eng Co Ltd | Differential pressure sensing apparatus |
US4370890A (en) * | 1980-10-06 | 1983-02-01 | Rosemount Inc. | Capacitive pressure transducer with isolated sensing diaphragm |
US4403297A (en) * | 1981-01-02 | 1983-09-06 | Loveland Controls Company | Process control system prover |
US4392382A (en) * | 1981-03-09 | 1983-07-12 | Motorola Inc. | Linearized electronic capacitive pressure transducer |
US4386312A (en) * | 1981-04-24 | 1983-05-31 | Setra Systems, Inc. | Linear capacitive sensor system |
US4626773A (en) * | 1984-10-26 | 1986-12-02 | Exxon Production Research Co. | Method and means for determining rock properties using time-domain dielectric spectroscopy |
US4763063A (en) * | 1985-07-26 | 1988-08-09 | Allied-Signal Inc. | Compact digital pressure sensor circuitry |
US4780662A (en) * | 1987-03-16 | 1988-10-25 | Westinghouse Electric Corp. | Determining eccentricity of insulated wire |
US4816744A (en) * | 1987-05-18 | 1989-03-28 | Laser Metric Systems, Inc. | Method and device for measuring inside diameters using a laser interferometer and capacitance measurements |
US4961055A (en) * | 1989-01-04 | 1990-10-02 | Vickers, Incorporated | Linear capacitance displacement transducer |
GB2229004B (en) * | 1989-03-07 | 1993-09-29 | Rolls Royce Plc | Improvements in or relating to gas turbine engine tip clearance sensors |
US5136250A (en) * | 1989-04-28 | 1992-08-04 | Seagate Technology, Inc. | Capacitance height gauge |
US5065611A (en) * | 1989-08-15 | 1991-11-19 | The Foxboro Company | System for calibrating the span of pressure measuring instruments |
US5070302A (en) * | 1989-09-05 | 1991-12-03 | Eastman Kodak Company | Capacitance probe for measuring a width of a clearance between parts |
DE3933512A1 (de) * | 1989-10-06 | 1991-04-18 | Endress Hauser Gmbh Co | Differenzdruckmessgeraet |
US5163326A (en) * | 1991-03-08 | 1992-11-17 | Rosemount Inc. | Line pressure compensator for a pressure transducer |
US5187985A (en) * | 1991-09-19 | 1993-02-23 | Honeywell Inc. | Amplified pressure transducer |
-
1991
- 1991-10-18 US US07/775,311 patent/US5237285A/en not_active Expired - Lifetime
- 1991-11-02 TW TW080108619A patent/TW287284B/zh active
-
1992
- 1992-09-17 IL IL10320992A patent/IL103209A/en not_active IP Right Cessation
- 1992-10-07 MX MX9205753A patent/MX9205753A/es not_active IP Right Cessation
- 1992-10-13 JP JP50776493A patent/JP3233404B2/ja not_active Expired - Lifetime
- 1992-10-13 EG EG61892A patent/EG20331A/xx active
- 1992-10-13 AU AU27935/92A patent/AU662934B2/en not_active Ceased
- 1992-10-13 KR KR1019940701227A patent/KR100196808B1/ko not_active IP Right Cessation
- 1992-10-13 RU RU94026263A patent/RU2108556C1/ru active
- 1992-10-13 BR BR9206643A patent/BR9206643A/pt not_active IP Right Cessation
- 1992-10-13 CA CA002119437A patent/CA2119437A1/en not_active Abandoned
- 1992-10-13 WO PCT/US1992/008733 patent/WO1993008479A1/en active IP Right Grant
- 1992-10-13 EP EP92922499A patent/EP0608355B1/en not_active Expired - Lifetime
- 1992-10-13 DE DE69229871T patent/DE69229871D1/de not_active Expired - Lifetime
- 1992-10-13 HU HU9401103A patent/HU216666B/hu not_active IP Right Cessation
- 1992-10-13 SG SG1996008507A patent/SG49261A1/en unknown
- 1992-10-14 MY MYPI92001849A patent/MY108023A/en unknown
- 1992-10-16 ZA ZA927996A patent/ZA927996B/xx unknown
-
1993
- 1993-03-17 US US08/032,637 patent/US5281922A/en not_active Expired - Lifetime
-
1994
- 1994-04-15 FI FI941751A patent/FI941751A0/fi unknown
- 1994-04-15 NO NO941362A patent/NO941362L/no not_active Application Discontinuation
-
1998
- 1998-09-03 HK HK98110389A patent/HK1009985A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
IL103209A0 (en) | 1993-02-21 |
US5237285A (en) | 1993-08-17 |
JP3233404B2 (ja) | 2001-11-26 |
TW287284B (no) | 1996-10-01 |
HUT68107A (en) | 1995-05-29 |
EP0608355B1 (en) | 1999-08-25 |
DE69229871D1 (de) | 1999-09-30 |
EP0608355A1 (en) | 1994-08-03 |
KR100196808B1 (ko) | 1999-06-15 |
FI941751A (fi) | 1994-04-15 |
MY108023A (en) | 1996-07-30 |
HU9401103D0 (en) | 1994-08-29 |
MX9205753A (es) | 1993-04-01 |
FI941751A0 (fi) | 1994-04-15 |
RU2108556C1 (ru) | 1998-04-10 |
HU216666B (hu) | 1999-08-30 |
EP0608355A4 (en) | 1996-04-10 |
BR9206643A (pt) | 1995-04-04 |
AU2793592A (en) | 1993-05-21 |
SG49261A1 (en) | 1998-05-18 |
NO941362D0 (no) | 1994-04-15 |
HK1009985A1 (en) | 1999-06-11 |
ZA927996B (en) | 1994-04-18 |
US5281922A (en) | 1994-01-25 |
WO1993008479A1 (en) | 1993-04-29 |
AU662934B2 (en) | 1995-09-21 |
EG20331A (en) | 1998-10-31 |
JPH07500188A (ja) | 1995-01-05 |
IL103209A (en) | 1994-04-12 |
CA2119437A1 (en) | 1993-04-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FC2A | Withdrawal, rejection or dismissal of laid open patent application |