NO882395L - DIGITAL TRANSFER DEVICE FOR AA IMPROVE THE EXPENSION OF A TWO-WIRE TRANSFER. - Google Patents
DIGITAL TRANSFER DEVICE FOR AA IMPROVE THE EXPENSION OF A TWO-WIRE TRANSFER.Info
- Publication number
- NO882395L NO882395L NO88882395A NO882395A NO882395L NO 882395 L NO882395 L NO 882395L NO 88882395 A NO88882395 A NO 88882395A NO 882395 A NO882395 A NO 882395A NO 882395 L NO882395 L NO 882395L
- Authority
- NO
- Norway
- Prior art keywords
- wire
- expension
- improve
- output
- transfer
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
- G08C19/04—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage using variable resistance
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
- Communication Cables (AREA)
- Electric Cable Installation (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Tires In General (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Transmitters (AREA)
Abstract
An existing analog two-wire transmitter (11) has a sensor module (35), and analog circuits (23) which provide an output representative of a sensed process variable, such as pressure, to a two-wire current loop (14). At least portions of the analog circuit (23) are removed and replaced with apparatus including a digital converter (52) that digitally calculates the transmitter output using the same current range in the current loop (14) and calculating corrections for obtaining linearity of the output.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US91464886A | 1986-10-02 | 1986-10-02 | |
| PCT/US1987/002448 WO1988002528A1 (en) | 1986-10-02 | 1987-09-24 | Digital converter apparatus for improving the output of a two-wire transmitter |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NO882395L true NO882395L (en) | 1988-05-31 |
| NO882395D0 NO882395D0 (en) | 1988-05-31 |
| NO300566B1 NO300566B1 (en) | 1997-06-16 |
Family
ID=25434614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO882395A NO300566B1 (en) | 1986-10-02 | 1988-05-31 | Parameter Value Transmitter |
Country Status (18)
| Country | Link |
|---|---|
| EP (1) | EP0324784B1 (en) |
| JP (1) | JP2529874B2 (en) |
| KR (1) | KR960014487B1 (en) |
| CN (1) | CN1014450B (en) |
| AT (1) | ATE109295T1 (en) |
| AU (1) | AU611649B2 (en) |
| CA (1) | CA1334994C (en) |
| DE (1) | DE3750297T2 (en) |
| DK (1) | DK171303B1 (en) |
| ES (1) | ES2005363A6 (en) |
| HK (1) | HK135094A (en) |
| IL (1) | IL84004A (en) |
| IN (1) | IN170265B (en) |
| MX (1) | MX160488A (en) |
| NO (1) | NO300566B1 (en) |
| WO (1) | WO1988002528A1 (en) |
| YU (1) | YU183987A (en) |
| ZA (1) | ZA877271B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59814313D1 (en) * | 1998-09-07 | 2008-12-11 | Endress & Hauser Gmbh & Co Kg | end station |
| DE19930661A1 (en) * | 1999-07-02 | 2001-01-18 | Siemens Ag | Transmitter |
| US8446977B2 (en) * | 2007-09-12 | 2013-05-21 | Valery Vasilievich Ovchinnikov | Method for transmitting discrete electric signals |
| US9217653B2 (en) | 2007-09-13 | 2015-12-22 | Rosemount Inc. | High performance architecture for process transmitters |
| DE102008050354A1 (en) * | 2008-10-02 | 2010-04-08 | Siemens Aktiengesellschaft | transmitters |
| US9281088B2 (en) * | 2010-06-07 | 2016-03-08 | Rosemount Inc. | Instrument for nuclear power facility |
| US8578783B2 (en) * | 2011-09-26 | 2013-11-12 | Rosemount Inc. | Process fluid pressure transmitter with separated sensor and sensor electronics |
| RU2546576C2 (en) * | 2012-06-05 | 2015-04-10 | Федеральное государственное бюджетное учреждение науки Институт программных систем им. А.К. Айламазяна Российской академии наук (ИПС им. А.К. Айламазяна РАН) | 4-20mA TRANSCEIVER |
| US10962622B2 (en) | 2013-12-23 | 2021-03-30 | Rosemount Inc. | Analog process variable transmitter with electronic calibration |
| DE102016207289B3 (en) * | 2016-04-28 | 2017-05-04 | Siemens Aktiengesellschaft | Field device for determining a process variable in process automation |
| CN110319857B (en) * | 2019-08-05 | 2024-05-14 | 北京恒泰翔基科技有限公司 | Sensor with high-resistance connection structure |
| KR102088874B1 (en) * | 2019-10-08 | 2020-03-13 | (주)다스 | An Electric Detecting Device for Detecting an Orientation and a Horizontal Level |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4250490A (en) * | 1979-01-19 | 1981-02-10 | Rosemount Inc. | Two wire transmitter for converting a varying signal from a remote reactance sensor to a DC current signal |
| US4520488A (en) * | 1981-03-02 | 1985-05-28 | Honeywell, Inc. | Communication system and method |
| US4419619A (en) * | 1981-09-18 | 1983-12-06 | Mcgraw-Edison Company | Microprocessor controlled voltage regulating transformer |
| CH664637A5 (en) * | 1982-04-28 | 1988-03-15 | Cerberus Ag | METHOD FOR TRANSMITTING MEASURED VALUES IN A MONITORING SYSTEM. |
| US4494183A (en) * | 1982-06-17 | 1985-01-15 | Honeywell Inc. | Process variable transmitter having a non-interacting operating range adjustment |
| US4556866A (en) * | 1983-03-16 | 1985-12-03 | Honeywell Inc. | Power line carrier FSK data system |
| JPS61142828A (en) * | 1984-12-14 | 1986-06-30 | Yokogawa Electric Corp | 2-wire type data transmitter |
-
1987
- 1987-09-22 IN IN687/MAS/87A patent/IN170265B/en unknown
- 1987-09-24 AT AT87906717T patent/ATE109295T1/en not_active IP Right Cessation
- 1987-09-24 JP JP62506120A patent/JP2529874B2/en not_active Expired - Lifetime
- 1987-09-24 EP EP87906717A patent/EP0324784B1/en not_active Expired - Lifetime
- 1987-09-24 DE DE3750297T patent/DE3750297T2/en not_active Expired - Fee Related
- 1987-09-24 WO PCT/US1987/002448 patent/WO1988002528A1/en active IP Right Grant
- 1987-09-24 AU AU80393/87A patent/AU611649B2/en not_active Ceased
- 1987-09-27 IL IL84004A patent/IL84004A/en not_active IP Right Cessation
- 1987-09-28 ZA ZA877271A patent/ZA877271B/en unknown
- 1987-09-30 CA CA000548261A patent/CA1334994C/en not_active Expired - Fee Related
- 1987-09-30 CN CN87106642A patent/CN1014450B/en not_active Expired
- 1987-10-01 MX MX8640A patent/MX160488A/en unknown
- 1987-10-01 ES ES8702804A patent/ES2005363A6/en not_active Expired
- 1987-10-06 YU YU01839/87A patent/YU183987A/en unknown
-
1988
- 1988-05-31 NO NO882395A patent/NO300566B1/en not_active IP Right Cessation
- 1988-06-01 DK DK297588A patent/DK171303B1/en not_active IP Right Cessation
- 1988-06-02 KR KR88700623A patent/KR960014487B1/en not_active IP Right Cessation
-
1994
- 1994-12-01 HK HK135094A patent/HK135094A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02500223A (en) | 1990-01-25 |
| ES2005363A6 (en) | 1989-03-01 |
| DK297588A (en) | 1988-06-01 |
| AU611649B2 (en) | 1991-06-20 |
| CN87106642A (en) | 1988-06-22 |
| EP0324784A4 (en) | 1989-09-26 |
| IL84004A (en) | 1992-05-25 |
| NO882395D0 (en) | 1988-05-31 |
| ATE109295T1 (en) | 1994-08-15 |
| DE3750297D1 (en) | 1994-09-01 |
| WO1988002528A1 (en) | 1988-04-07 |
| MX160488A (en) | 1990-03-12 |
| KR880701929A (en) | 1988-11-07 |
| EP0324784B1 (en) | 1994-07-27 |
| ZA877271B (en) | 1988-03-30 |
| AU8039387A (en) | 1988-04-21 |
| KR960014487B1 (en) | 1996-10-16 |
| YU183987A (en) | 1990-08-31 |
| IN170265B (en) | 1992-03-07 |
| EP0324784A1 (en) | 1989-07-26 |
| DE3750297T2 (en) | 1994-12-15 |
| DK171303B1 (en) | 1996-08-26 |
| CA1334994C (en) | 1995-03-28 |
| HK135094A (en) | 1994-12-09 |
| NO300566B1 (en) | 1997-06-16 |
| JP2529874B2 (en) | 1996-09-04 |
| IL84004A0 (en) | 1988-02-29 |
| CN1014450B (en) | 1991-10-23 |
| DK297588D0 (en) | 1988-06-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM1K | Lapsed by not paying the annual fees |
Free format text: LAPSED IN MARCH 2001 |