DK297588D0 - DEVICE AND PROCEDURE FOR DIGITAL CONVERSION OF THE OUTPUT ON A TWO-WIRE TRANSMITTER - Google Patents

DEVICE AND PROCEDURE FOR DIGITAL CONVERSION OF THE OUTPUT ON A TWO-WIRE TRANSMITTER

Info

Publication number
DK297588D0
DK297588D0 DK297588A DK297588A DK297588D0 DK 297588 D0 DK297588 D0 DK 297588D0 DK 297588 A DK297588 A DK 297588A DK 297588 A DK297588 A DK 297588A DK 297588 D0 DK297588 D0 DK 297588D0
Authority
DK
Denmark
Prior art keywords
output
procedure
digital conversion
wire transmitter
transmitter
Prior art date
Application number
DK297588A
Other languages
Danish (da)
Other versions
DK171303B1 (en
DK297588A (en
Inventor
John A Kielb
Richard L Nelson
David L Pederson
Original Assignee
Rosemount Inc
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 Rosemount Inc filed Critical Rosemount Inc
Publication of DK297588A publication Critical patent/DK297588A/en
Publication of DK297588D0 publication Critical patent/DK297588D0/en
Application granted granted Critical
Publication of DK171303B1 publication Critical patent/DK171303B1/en

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)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Electric Cable Installation (AREA)
  • Transmitters (AREA)
  • Tires In General (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (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.
DK297588A 1986-10-02 1988-06-01 Apparatus and method for digital conversion of the output of a two-wire transmitter DK171303B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US91464886A 1986-10-02 1986-10-02
US91464886 1986-10-02
US8702448 1987-09-24
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
DK297588A DK297588A (en) 1988-06-01
DK297588D0 true DK297588D0 (en) 1988-06-01
DK171303B1 DK171303B1 (en) 1996-08-26

Family

ID=25434614

Family Applications (1)

Application Number Title Priority Date Filing Date
DK297588A DK171303B1 (en) 1986-10-02 1988-06-01 Apparatus and method for digital conversion of the output of a two-wire 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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
AU611649B2 (en) 1991-06-20
DK171303B1 (en) 1996-08-26
EP0324784B1 (en) 1994-07-27
AU8039387A (en) 1988-04-21
HK135094A (en) 1994-12-09
WO1988002528A1 (en) 1988-04-07
CN87106642A (en) 1988-06-22
ZA877271B (en) 1988-03-30
ATE109295T1 (en) 1994-08-15
IL84004A0 (en) 1988-02-29
JP2529874B2 (en) 1996-09-04
CA1334994C (en) 1995-03-28
NO882395L (en) 1988-05-31
MX160488A (en) 1990-03-12
NO300566B1 (en) 1997-06-16
EP0324784A1 (en) 1989-07-26
DK297588A (en) 1988-06-01
KR880701929A (en) 1988-11-07
NO882395D0 (en) 1988-05-31
DE3750297D1 (en) 1994-09-01
ES2005363A6 (en) 1989-03-01
EP0324784A4 (en) 1989-09-26
IN170265B (en) 1992-03-07
KR960014487B1 (en) 1996-10-16
DE3750297T2 (en) 1994-12-15
CN1014450B (en) 1991-10-23
IL84004A (en) 1992-05-25
JPH02500223A (en) 1990-01-25
YU183987A (en) 1990-08-31

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PBP Patent lapsed