KR880701906A - 전류-압력 변환기의 루우프 전류에 대한 주파수 궤환 장치 - Google Patents
전류-압력 변환기의 루우프 전류에 대한 주파수 궤환 장치Info
- Publication number
- KR880701906A KR880701906A KR1019880700601A KR880700601A KR880701906A KR 880701906 A KR880701906 A KR 880701906A KR 1019880700601 A KR1019880700601 A KR 1019880700601A KR 880700601 A KR880700601 A KR 880700601A KR 880701906 A KR880701906 A KR 880701906A
- Authority
- KR
- South Korea
- Prior art keywords
- current
- pressure transducer
- feedback device
- frequency feedback
- loop
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D7/00—Control of flow
- G05D7/005—Control of flow characterised by the use of auxiliary non-electric power combined with the use of electric means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2278—Pressure modulating relays or followers
- Y10T137/2365—Plural series units
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/2278—Pressure modulating relays or followers
- Y10T137/2409—With counter-balancing pressure feedback to the modulating device
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7759—Responsive to change in rate of fluid flow
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7761—Electrically actuated valve
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Power Engineering (AREA)
- Fluid Mechanics (AREA)
- Measuring Fluid Pressure (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Control Of Fluid Pressure (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US913,767 | 1986-09-30 | ||
US06/913,767 US4665938A (en) | 1986-09-30 | 1986-09-30 | Frequency feedback on a current loop of a current-to-pressure converter |
PCT/US1987/002382 WO1988002509A1 (en) | 1986-09-30 | 1987-09-21 | Frequency feedback on a current loop of a current-to-pressure converter |
Publications (2)
Publication Number | Publication Date |
---|---|
KR880701906A true KR880701906A (ko) | 1988-11-07 |
KR960000883B1 KR960000883B1 (ko) | 1996-01-13 |
Family
ID=25433555
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019880700601A KR960000883B1 (ko) | 1986-09-30 | 1987-09-21 | 전류-압력 변환기의 루우프 전류에 대한 주파수 궤환장치 |
Country Status (8)
Country | Link |
---|---|
US (1) | US4665938A (ko) |
EP (1) | EP0413683B1 (ko) |
KR (1) | KR960000883B1 (ko) |
CN (1) | CN1055551C (ko) |
CA (1) | CA1303704C (ko) |
DE (1) | DE3787897T2 (ko) |
MY (1) | MY100986A (ko) |
WO (1) | WO1988002509A1 (ko) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4836011A (en) * | 1987-11-12 | 1989-06-06 | Fisher Controls International, Inc. | Zero and span adjustment circuit for current/pressure transducer |
US4877051A (en) * | 1988-11-28 | 1989-10-31 | Mks Instruments, Inc. | Flow controller |
US4953618A (en) * | 1989-01-12 | 1990-09-04 | Haliburton Company | Injection manifold and method |
US4901756A (en) * | 1989-05-11 | 1990-02-20 | Rosemount Inc. | I/P converter with simulated compensation |
US5143116A (en) * | 1989-12-11 | 1992-09-01 | Skoglund Paul K | Flow regulating valve and system using the same |
US5035582A (en) * | 1990-01-22 | 1991-07-30 | American Standard Inc. | Electro-pneumatic governor for a compressed air-system |
US5179488A (en) * | 1990-07-26 | 1993-01-12 | Rosemount Inc. | Process control instrument with loop overcurrent circuit |
US5105790A (en) * | 1990-12-21 | 1992-04-21 | Nye Jr Dudley D | Current controlled fluid bleed |
US5105791A (en) * | 1990-12-21 | 1992-04-21 | Nye Jr Dudley D | Current to pressure/vacuum transducer |
CA2107624C (en) * | 1992-10-05 | 2002-01-08 | Stephen G. Seberger | Electro-pneumatic converter calibration |
CA2107519C (en) * | 1992-10-05 | 2002-04-09 | Stephen George Seberger | Communication system and method |
US5469877A (en) * | 1993-08-04 | 1995-11-28 | Fairchild Industrial Products Company | Electric to pneumatic transducer |
US5549137A (en) * | 1993-08-25 | 1996-08-27 | Rosemount Inc. | Valve positioner with pressure feedback, dynamic correction and diagnostics |
US5431182A (en) * | 1994-04-20 | 1995-07-11 | Rosemount, Inc. | Smart valve positioner |
DE4431463C2 (de) * | 1994-09-03 | 1997-10-16 | Honeywell Ag | Kompaktregler für ein Regelventil |
US5902927A (en) | 1995-12-01 | 1999-05-11 | Perception Incorporated | Fluid metering apparatus and method |
US6076542A (en) * | 1995-12-01 | 2000-06-20 | Perception Incorporated | Fluid metering method |
US5931186A (en) * | 1996-03-01 | 1999-08-03 | Skoglund; Paul K. | Fluid flow control valve and actuator for changing fluid flow rate |
US5720313A (en) * | 1996-05-24 | 1998-02-24 | Weiss Construction Co. | Flow rate control system |
US5887858A (en) * | 1996-10-22 | 1999-03-30 | The United States Of America As Represented By The Secretary Of The Navy | Passive-active mount |
US5899443A (en) * | 1996-10-22 | 1999-05-04 | The United States Of America As Represented By The Secretary Of The Navy | Passive-active vibration isolation |
JPH11166699A (ja) * | 1997-12-02 | 1999-06-22 | Nippon Air Liquide Kk | シリンダキャビネットにおける排気ダクトの流量調節装置 |
US6233285B1 (en) | 1997-12-23 | 2001-05-15 | Honeywell International Inc. | Intrinsically safe cable drive circuit |
US6519938B1 (en) | 1998-12-22 | 2003-02-18 | Coltec Industries Inc. | Recording and controlling pneumatic profiles |
TWI262298B (en) | 2004-02-02 | 2006-09-21 | Dwyer Instr | Pressure transmitter with power cycled hall effect sensor |
US7472589B2 (en) * | 2005-11-07 | 2009-01-06 | Halliburton Energy Services, Inc. | Single phase fluid sampling apparatus and method for use of same |
KR100834746B1 (ko) | 2007-02-14 | 2008-06-05 | 삼성전자주식회사 | 센스 앰프를 포함하는 반도체 소자 |
ITVI20100282A1 (it) * | 2010-10-18 | 2012-04-19 | Arno Drechsel | Regolatore di pressione per impianti di irrigazione ed impianto di irrigazione comprendente il regolatore |
DE102010056277B4 (de) * | 2010-12-24 | 2014-04-17 | Abb Technology Ag | Absperrarmatur |
US8887747B2 (en) * | 2012-05-31 | 2014-11-18 | General Electric Company | System and method for drum level control |
US10007273B2 (en) * | 2016-04-27 | 2018-06-26 | Cameron International Corporation | Variable frequency drive for a fluid-handling system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE420639B (sv) * | 1979-03-01 | 1981-10-19 | Saab Scania Ab | Signalomvandlare enhet for omvandling av en elektrisk reglersignal till en pneumatisk signal med ett piezoelektrisk element |
US4325399A (en) * | 1979-11-15 | 1982-04-20 | Rosemount Inc. | Current to pressure converter apparatus |
US4481967A (en) * | 1979-11-15 | 1984-11-13 | Rosemount Inc. | Control circuit for current to pressure converter |
US4403297A (en) * | 1981-01-02 | 1983-09-06 | Loveland Controls Company | Process control system prover |
JPS57198697U (ko) * | 1981-06-12 | 1982-12-16 | ||
US4492246A (en) * | 1983-03-28 | 1985-01-08 | Mcgraw-Edison Company | Solid state current-to-pressure and current-to-motion transducer |
US4527583A (en) * | 1983-07-12 | 1985-07-09 | Dresser Industries, Inc. | Electropneumatic transducer system |
-
1986
- 1986-09-30 US US06/913,767 patent/US4665938A/en not_active Expired - Lifetime
-
1987
- 1987-09-21 KR KR1019880700601A patent/KR960000883B1/ko not_active IP Right Cessation
- 1987-09-21 EP EP19870906536 patent/EP0413683B1/en not_active Expired - Lifetime
- 1987-09-21 WO PCT/US1987/002382 patent/WO1988002509A1/en active IP Right Grant
- 1987-09-21 DE DE19873787897 patent/DE3787897T2/de not_active Expired - Fee Related
- 1987-09-29 CA CA 548103 patent/CA1303704C/en not_active Expired - Fee Related
- 1987-09-30 CN CN87106633A patent/CN1055551C/zh not_active Expired - Fee Related
- 1987-11-25 MY MYPI87003110A patent/MY100986A/en unknown
Also Published As
Publication number | Publication date |
---|---|
CN87106633A (zh) | 1988-07-06 |
US4665938A (en) | 1987-05-19 |
MY100986A (en) | 1991-06-15 |
DE3787897D1 (de) | 1993-11-25 |
EP0413683B1 (en) | 1993-10-20 |
KR960000883B1 (ko) | 1996-01-13 |
EP0413683A4 (en) | 1990-03-21 |
CA1303704C (en) | 1992-06-16 |
EP0413683A1 (en) | 1991-02-27 |
WO1988002509A1 (en) | 1988-04-07 |
CN1055551C (zh) | 2000-08-16 |
DE3787897T2 (de) | 1994-05-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
G160 | Decision to publish patent application | ||
E701 | Decision to grant or registration of patent right | ||
GRNT | Written decision to grant | ||
FPAY | Annual fee payment |
Payment date: 20000107 Year of fee payment: 5 |
|
LAPS | Lapse due to unpaid annual fee |