WO2003040657A2 - Messumformer - Google Patents
Messumformer Download PDFInfo
- Publication number
- WO2003040657A2 WO2003040657A2 PCT/DE2002/004072 DE0204072W WO03040657A2 WO 2003040657 A2 WO2003040657 A2 WO 2003040657A2 DE 0204072 W DE0204072 W DE 0204072W WO 03040657 A2 WO03040657 A2 WO 03040657A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- transmitter
- control input
- generation
- error
- 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
Definitions
- the invention relates to a measuring transducer with a sensor for converting a measured variable detected therewith into an electrical sensor signal, with a signal processing device which is designed to process the sensor signal to form a measuring signal and for generating an error signal, and with a data interface for transmitting the measuring signal and error signal.
- a pressure transmitter has a pressure sensor, the sensor signal of which is amplified, digitized, evaluated and corrected for linearity and temperature behavior in a signal processing device provided in the transmitter.
- the measurement signal prepared in this way is transmitted via a data interface, e.g. B. PROFIBUS or HART, the communication system of a technical system in which the transmitter is installed. If hardware or software errors occur in the transmitter, this is indicated on the transmitter, the error also being made available as digital diagnostic information on the data interface. In the case of a 4 ... 20 mA interface, the error can also be analog in the form of a
- the invention has for its object to be able to report error events occurring outside the transmitter in a simple manner.
- the object is achieved in that the transmitter of the type mentioned at the outset has a control input which is different from the data interface and via which the generation of the error signal can be triggered.
- the error event detected outside the transmitter is therefore used to control the transmitter to generate an error message signal and transmit it via the data interface.
- the generation of the error signal can preferably be triggered by short-circuiting the control input, so that no control signal has to be generated.
- a current path in the control input can also be interrupted to generate the error signal.
- the transmitter can preferably be operated with an additional device, the additional device having a monitoring device monitoring its functional state, which is connected to the control input of the transmitter. If the functional state of the additional device changes, in particular in the event of a functional failure, the transmitter then generates the associated error signal.
- the monitoring device preferably contains a switch which can be actuated by a change in the functional state.
- the switch can be a pressure, temperature, magnetically inductive or other switch which responds to the pressure exceeding or falling below a pressure, temperature, position or other limit value.
- the additional device can be a diaphragm seal, with the monitoring device detecting a loss of the transmission fluid in the diaphragm seal.
- a measuring transducer 1 here a pressure or differential pressure measuring transducer, has a sensor 2, with which a measured variable, here pressure, is converted into an electrical sensor signal 3.
- a measured variable here pressure
- the pressure is detected with the aid of a diaphragm seal 4 at a measuring point in a technical system and transmitted to the sensor 2 in a capillary 5 by means of a transmission liquid.
- the sensor signal 3 is in a
- Signal processing device 6 processed into a measurement signal 7 and then transferred to the communication system 9 of the technical system via a data interface 8.
- the signal processing device 6 is able to detect hardware or software errors occurring in the transmitter, to display them on the transmitter 10 via a display 10, and also to provide the error as diagnostic information 11 on the data interface 8.
- the diaphragm seal 4 has a monitoring device 12 with a pressure switch 13 which responds when the transmission fluid is lost and then closes.
- the pressure switch 13 is connected to a separate control input 15 of the transmitter 1 via a two-wire control line 14.
- the control input 15 is connected with one connection to the ground potential and the other connection via a resistor 16 to the supply voltage potential V + of the transmitter 1, so that a current flows through the resistor 16 when the pressure switch 13 is closed.
- the resulting voltage drop across the resistor 16 drives a comparator 17, in the simplest case an AND gate, which triggers the signal processing device 6 in the sense of generating the error signal 11.
- the pressure switch 13 can also work as a break contact, so that the current path in the control input 15 is not closed but opened for the error message.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02802603A EP1440290B1 (de) | 2001-11-02 | 2002-10-31 | Messumformer |
US10/836,400 US7054765B2 (en) | 2001-11-02 | 2004-05-03 | Measuring transducer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10153997.5 | 2001-11-02 | ||
DE10153997 | 2001-11-02 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/836,400 Continuation US7054765B2 (en) | 2001-11-02 | 2004-05-03 | Measuring transducer |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003040657A2 true WO2003040657A2 (de) | 2003-05-15 |
WO2003040657A3 WO2003040657A3 (de) | 2003-08-07 |
Family
ID=7704486
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2002/004072 WO2003040657A2 (de) | 2001-11-02 | 2002-10-31 | Messumformer |
Country Status (3)
Country | Link |
---|---|
US (1) | US7054765B2 (de) |
EP (1) | EP1440290B1 (de) |
WO (1) | WO2003040657A2 (de) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10317859A1 (de) * | 2003-04-16 | 2004-11-04 | Endress + Hauser Gmbh + Co. Kg | Verfahren zur Aufzeichnung von Messsignalen und entsprechende Vorrichtung |
WO2005013229A2 (de) * | 2003-08-01 | 2005-02-10 | Msa Auer Gmbh | Schaltungsanordnung mit einer mehrdrahtleitung zur stromversorgung und signalausgabe |
WO2005017851A1 (en) * | 2003-08-07 | 2005-02-24 | Rosemount Inc. | Process device with loop override |
US7098798B2 (en) | 2003-08-07 | 2006-08-29 | Rosemount Inc. | Process device with loop override |
DE102005062259A1 (de) * | 2005-12-24 | 2007-07-05 | Mathias Bindzus | Schutzschalter |
US7280048B2 (en) | 2003-08-07 | 2007-10-09 | Rosemount Inc. | Process control loop current verification |
US7464721B2 (en) | 2004-06-14 | 2008-12-16 | Rosemount Inc. | Process equipment validation |
US8180466B2 (en) | 2003-11-21 | 2012-05-15 | Rosemount Inc. | Process device with supervisory overlayer |
US9020768B2 (en) | 2011-08-16 | 2015-04-28 | Rosemount Inc. | Two-wire process control loop current diagnostics |
US20170093533A1 (en) | 2015-09-30 | 2017-03-30 | Rosemount Inc. | Process variable transmitter with self-learning loop diagnostics |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007062919A1 (de) * | 2007-12-21 | 2009-06-25 | Endress + Hauser Gmbh + Co. Kg | Vorrichtung zur Diagnose und/oder Ermittlung von Betriebs- bedingungen und/oder von Umgebungsbedingungen eines Feldgeräts der Prozessautomatisierungstechnik |
CA2655591A1 (en) * | 2009-02-17 | 2010-08-17 | Wisemen Controls & Instrumentation Ltd. | Gas flow meter reader |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5874895A (en) * | 1996-11-15 | 1999-02-23 | International Business Machines Corporation | Method and apparatus for testing operation of a sensor controlled device |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2077434B (en) * | 1980-05-30 | 1984-04-26 | Millar John | Ascertaining flow rate through valves or pumps |
DE3705901C2 (de) * | 1987-02-24 | 1996-12-12 | Siemens Ag | Druckmeßwandler |
US4799169A (en) * | 1987-05-26 | 1989-01-17 | Mark Industries, Inc. | Gas well flow instrumentation |
US5142483A (en) * | 1990-04-24 | 1992-08-25 | Caltechnix Corporation | Pressure regulating system for positive shut-off pressure controller |
US5925835A (en) * | 1997-10-13 | 1999-07-20 | Motorola, Inc. | Method of and apparatus for testing a nozzle of a pick-and-place system |
DE19757196A1 (de) * | 1997-12-22 | 1999-06-24 | Philips Patentverwaltung | Sensoranordnung mit Meßfehlererkennung |
DE29917651U1 (de) | 1999-10-07 | 2000-11-09 | Siemens AG, 80333 München | Meßumformer sowie Prozeßleitsystem |
US6343498B1 (en) | 1999-10-29 | 2002-02-05 | Denso Corporation | Physical quantity sensor having fault detection function |
JP4103280B2 (ja) | 1999-12-24 | 2008-06-18 | 株式会社デンソー | 力学量センサ装置 |
US6871551B2 (en) * | 2000-06-28 | 2005-03-29 | Endress + Hauser Wetzer Gmbh + Co. Kg | Apparatus for generating and conducting a fluid flow, and method of monitoring said apparatus |
-
2002
- 2002-10-31 WO PCT/DE2002/004072 patent/WO2003040657A2/de active Application Filing
- 2002-10-31 EP EP02802603A patent/EP1440290B1/de not_active Expired - Lifetime
-
2004
- 2004-05-03 US US10/836,400 patent/US7054765B2/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5874895A (en) * | 1996-11-15 | 1999-02-23 | International Business Machines Corporation | Method and apparatus for testing operation of a sensor controlled device |
Non-Patent Citations (1)
Title |
---|
RAAB H: "AUSFALLINFORMATION BEI DIGITALEN MESSUMFORMERN MIT ANALOGEN AUSGANGSSIGNAL: VEREINHEITLICHUNG DES SIGNALPEGELS FAILURE INFORMATION FOR DIGITAL FIELD INSTRUMENTS WITH ANALOGUE OUTPUT: STANDARDIZATION OF THE SIGNAL LEVEL" AUTOMATISIERUNGSTECHNISCHE PRAXIS - ATP, OLDENBOURG VERLAG. MUNCHEN, DE, Bd. 36, Nr. 7, 1. Juli 1994 (1994-07-01), Seiten 30-32,34-35, XP000454543 ISSN: 0178-2320 * |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10317859A1 (de) * | 2003-04-16 | 2004-11-04 | Endress + Hauser Gmbh + Co. Kg | Verfahren zur Aufzeichnung von Messsignalen und entsprechende Vorrichtung |
DE10317859B4 (de) * | 2003-04-16 | 2008-01-31 | Endress + Hauser Gmbh + Co. Kg | Verfahren zur Aufzeichnung von Messsignalen und entsprechende Vorrichtung |
WO2005013229A2 (de) * | 2003-08-01 | 2005-02-10 | Msa Auer Gmbh | Schaltungsanordnung mit einer mehrdrahtleitung zur stromversorgung und signalausgabe |
WO2005013229A3 (de) * | 2003-08-01 | 2005-03-24 | Msa Auer Gmbh | Schaltungsanordnung mit einer mehrdrahtleitung zur stromversorgung und signalausgabe |
US7280048B2 (en) | 2003-08-07 | 2007-10-09 | Rosemount Inc. | Process control loop current verification |
US7098798B2 (en) | 2003-08-07 | 2006-08-29 | Rosemount Inc. | Process device with loop override |
WO2005017851A1 (en) * | 2003-08-07 | 2005-02-24 | Rosemount Inc. | Process device with loop override |
US8180466B2 (en) | 2003-11-21 | 2012-05-15 | Rosemount Inc. | Process device with supervisory overlayer |
US7464721B2 (en) | 2004-06-14 | 2008-12-16 | Rosemount Inc. | Process equipment validation |
DE102005062259A1 (de) * | 2005-12-24 | 2007-07-05 | Mathias Bindzus | Schutzschalter |
US9020768B2 (en) | 2011-08-16 | 2015-04-28 | Rosemount Inc. | Two-wire process control loop current diagnostics |
US20170093533A1 (en) | 2015-09-30 | 2017-03-30 | Rosemount Inc. | Process variable transmitter with self-learning loop diagnostics |
US10367612B2 (en) | 2015-09-30 | 2019-07-30 | Rosemount Inc. | Process variable transmitter with self-learning loop diagnostics |
Also Published As
Publication number | Publication date |
---|---|
WO2003040657A3 (de) | 2003-08-07 |
US20050017736A1 (en) | 2005-01-27 |
EP1440290B1 (de) | 2013-01-30 |
US7054765B2 (en) | 2006-05-30 |
EP1440290A2 (de) | 2004-07-28 |
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