EP1287511B1 - Circuit et vehicule comprenant un appareil de mesure en technique deux fils et procede d'essai de cet appareil - Google Patents

Circuit et vehicule comprenant un appareil de mesure en technique deux fils et procede d'essai de cet appareil Download PDF

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Publication number
EP1287511B1
EP1287511B1 EP01943257A EP01943257A EP1287511B1 EP 1287511 B1 EP1287511 B1 EP 1287511B1 EP 01943257 A EP01943257 A EP 01943257A EP 01943257 A EP01943257 A EP 01943257A EP 1287511 B1 EP1287511 B1 EP 1287511B1
Authority
EP
European Patent Office
Prior art keywords
iec
measuring device
current
electrical system
source circuit
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP01943257A
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German (de)
English (en)
Other versions
EP1287511A2 (fr
Inventor
Georg Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Endress and Hauser SE and Co KG
Original Assignee
Endress and Hauser SE and Co KG
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Publication date
Application filed by Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Priority to EP01943257A priority Critical patent/EP1287511B1/fr
Publication of EP1287511A2 publication Critical patent/EP1287511A2/fr
Application granted granted Critical
Publication of EP1287511B1 publication Critical patent/EP1287511B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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 two-wire measuring devices containing circuitry and means of transport, and a method for their testing.
  • Two-wire measuring devices are known to be measuring devices that have only two conductors L1, L2, which allow their electrical connection to and from the outside. These two conductors must be used both for the power supply and for the transmission of a measuring signal generated by the measuring instrument.
  • the measured signal values delivered by the two-wire measuring device are a standardized range of 4 mA to 20 mA DC currents assigned in such a way that a current value within this range corresponds exactly to one measured signal value.
  • Two-wire gauges of the aforementioned type are well known to the skilled person and, for example, in the EP-A 895 209 or the US-A 43 31 912 described in detail.
  • the mentioned power supply takes place by means of a connected in operation to the two conductors from outside, a DC voltage, belonging to a Primäx network NP DC voltage source G, so that closes a so-called current loop.
  • a current measuring resistor Rm at which a voltage proportional to the instantaneous current value and thus to the measuring signal can be picked up and further processed outside the measuring device.
  • the resistor Rm may be located far from the two-wire measuring device MS '; then he is connected via correspondingly long lines.
  • the one pole is NP1 of the primary network NP with the conductor L1 of the two-conductor measuring device MS 'and the other pole NP2 connected to one terminal of the resistor Rm, while the other terminal so to speak, as an indirect second primary network connection NP2 'is connected to the conductor L2.
  • digital signals can also be transmitted according to one of the usual standards, such as the so-called HART protocol.
  • the HART protocol (HART is a registered trademark of the HART User Group and the acronym for "Highway Addressable Remote Transducer", ie for bus-addressed measuring devices) has long been known and introduced in industrial metrology.
  • the HART protocol enables communication between a field and a process control level with the benefit of the simultaneous transferability of an analog measurement signal according to the 4 mA to 20 mA standard and the digital HART signal for commissioning, maintenance, query or Control of the measuring instruments in the field level.
  • a cyclic polling and possibly a subsequent instruction is performed by the digital HART signals.
  • a digital zero is realized by two sine waves of frequency 2.2 kHz and a digital one by a single sine wave of frequency 1.2 kHz according to the standard Bell 202 frequency shift keying. These sine waves are transmitted through the two conductors by modulating them on the current flowing through them.
  • EMC electromagnetic compatibility
  • test regulations presuppose that the primary power supply system, which is used by the DC voltage source G, also generates energy-rich interference pulses to which a two-wire measuring device MS 'connected to the network has to withstand.
  • test regulations reproduce real states, as they occur in practice, when two-wire measuring devices are to be used, for example, on means of transport, in particular on ships. Namely, in the primary on-board network NP installed on ships, the interfering impulses mentioned are frequently present, cf. this the Fig. 1 , Thus, the two conductors L1, L2 of today's two-wire meters must be tested with the test signals provided by the IEC-1000-4-5: 1995 standard for power supply lines, and they must therefore be designed to be resistant to these test signals.
  • Another task is to specify a suitable means of transport.
  • An essential advantage of the invention is that in two-wire gauges, which are to be used in transport, esp. In ships, no costly and storage space-requiring, interference suppression or filtering components are required and that nevertheless an operating license after Standard IEC 1000-4-5: 1995 can be issued for such two-wire measuring instruments.
  • FIG. 2 in which in the form of a block diagram schematically an embodiment of a operated according to the invention, two-wire measuring device is shown.
  • Fig. 2 is a conventional two-wire meter MS, for example, with a standard housing Gh, as a circuit block illustrated.
  • the two-wire measuring device MS at least one physical quantity is measured, for example the volume or mass flow rate of a fluid, or further its density, viscosity, pressure or temperature, or furthermore the pressure difference between two media or else generally temperature , Pressure, level, pH or gas concentration.
  • the two-wire measuring device MS is intended for operation in a means of transport, in particular in a ship. There it is fed by a current from a current loop which is powered by a standard IEC-1000-4-5, in particular the IEC-1000-4-5: 1995 standard, fed by a primary on-board network NP of the means of transport and the supply of a secondary electrical system NS serving source circuit Q comes.
  • the two terminals NP1, NP2 are thus connected to supply terminals of the source circuit Q, one of which is active Part is shown for the sake of simplicity as a source g of a DC voltage and to the filter components, such as a coil L and a capacitor C, belong, so that at the output of a secondary electrical system NS with the terminals NS1, NS2 arises.
  • the current measuring resistor Rm is connected between the terminal NS2 and the conductor L2, so that the measuring device-side terminal of the resistor Rm can be referred to as the indirect connection of the secondary onboard electrical system NS2 '.
  • the filter components are dimensioned, designed and designed in such a way that the secondary on-board electrical system NS complies with a valid IEC-1000-4-5 standard, in particular the IEC-1000-4-5: 1995 standard, and is therefore tested according to this standard and can be certified.
  • the two-wire measuring device MS surprisingly only needs to be designed so that it is not EMC-certified for electromagnetic compatibility according to the current standard IEC-1000-4-5.
  • an operating permit for operation in a means of transport esp. In a ship, esp. In a ship, two-wire measuring device MS issued as follows, ie it can be EMC-certified as follows:
  • the two-wire measuring device MS When operating in transport the two-wire measuring device MS be powered by a current of a current loop, the current of the according to a valid standard IEC-1000-4-5, in particular the standard IEC-1000-4-5: 1995 certified, powered by the primary on-board network NP of the means of transport and the supply of the secondary electrical system NS serving source circuit Q comes. This complies with the test specifications of the current standard IEC-1000-4-5 and is or has already been EMC-certified, ie has this type-approval or the corresponding certificate.
  • the operating permit of the two-wire measuring device MS ie its EMC certificate, is now granted to it in accordance with the valid IEC-1000-4-5 standard only if it has been tested in accordance with the IEC-1000-4- 5: 1995 EMC certified to be operated exclusively on the vehicle's EMC-certified secondary electrical system.
  • the two-wire measuring device MS can be used e.g. be equipped with a correspondingly dimensioned connection-connection device.
  • the method according to the invention for testing the two-wire measuring device MS for electromagnetic compatibility which is intended for operation in a means of transport, esp. In a ship, is carried out as follows (again, the measuring device MS of the illustrated stream of fed to the source circuit Q containing current loop:
  • a hybrid generator esp. According to standard IEC-60-1 or 10 IEC 469-1, generates a current / voltage surge, esp.
  • the hybrid generator is a decoupling network also defined in the aforementioned standard for simulating the source circuit Q and the decoupling network downstream of the test specifications of the standard IEC-1000-4-5: 1995 two-wire measuring device MS.
  • An inventive test arrangement for testing a two-wire measuring device for electromagnetic compatibility which is intended for operation in a means of transport, esp. In a ship, includes the aforementioned hybrid generator, esp. According to standard IEC-60-1 or IEC 469-1, for generating the described current / voltage surge, the decoupling network connected downstream of the hybrid generator for simulating the secondary on-board electrical system NS and the decoupling network which is not certified according to the test specifications of the current IEC-1000-4-5 standard. conductor measuring device.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
  • Tests Of Electronic Circuits (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Claims (4)

  1. Configuration de circuit, comprenant :
    - un réseau de bord primaire (NP) alimentant un circuit source (Q) d'un moyen de transport, notamment un bateau,
    - un réseau de bord secondaire (NS) du moyen de transport, alimenté par le circuit source (Q), ainsi que
    - un appareil de mesure bifilaire (MS), alimenté par un courant d'une boucle de courant, lequel courant provient du circuit source (Q),
    - le circuit source (Q) répondant à une norme CEI-1000-4-5 valable, notamment à la norme CEI-1000-4-5:1995, et
    - l'appareil de mesure bifilaire (MS) étant conçu de telle manière à ne pas répondre à la norme CEI-1000-4-5 valable.
  2. Moyen de transport, notamment un bateau, comprenant :
    - un réseau de bord primaire (NP) alimentant un circuit source (Q),
    - un réseau de bord secondaire (NS) alimenté par le circuit source (Q), ainsi que
    - un appareil de mesure bifilaire (MS), alimenté par un courant d'une boucle de courant, lequel courant provient du circuit source (Q),
    - le circuit source (Q) répondant à une norme CEI-1000-4-5 valable, notamment à la norme CEI-1000-4-5:1995, et
    - l'appareil de mesure bifilaire (MS) étant conçu de telle manière à ne pas répondre à la norme CEI-1000-4-5 valable pour la compatibilité électromagnétique.
  3. Procédé destiné au contrôle d'un appareil de mesure bifilaire (MS) concernant la compatibilité électromagnétique, lequel appareil est destiné à être utilisé dans un moyen de transport, notamment dans un bateau, et y être alimenté par un courant d'une boucle de courant, lequel courant provient d'un circuit source (Q) alimenté par un réseau de bord primaire (NP) du moyen de transport et servant à l'alimentation d'un réseau de bord secondaire (NS), répondant à une norme CEI-1000-4-5 valable, notamment la norme CEI-1000-4-5:1995, lequel procédé comprend les étapes suivantes :
    - Interconnexion d'un générateur hybride servant à la génération d'un choc de courant tension, notamment selon la norme CEI-60-1 ou CEI 469-1, d'un réseau de découplage destiné à la simulation du circuit source (Q) ainsi que d'un appareil de mesure bifilaire (MS) ne répondant pas aux prescriptions de contrôle de la norme CEI-1000-4-5:1995, de telle sorte que le générateur hybride soit disposé en aval du réseau de découplage et que l'appareil de mesure bifilaire (MS) soit disposé en aval du réseau de découplage, ainsi que
    - Génération d'un choc de courant /tension répondant notamment à la norme CEI-60-1 ou à la norme CEI 469-1 concernant un déroulement temporel d'une tension à vide et un déroulement temporel d'un courant de court-circuit, et détermination si l'appareil de mesure bifilaire (MS) a résisté.
  4. Procédé selon la revendication précédente, pour lequel une autorisation de fonctionnement est accordée à d'autres appareils de mesure bifilaires (MS) similaires, ne répondant pas à la norme CEI-1 000-4-5 valable, destinés au fonctionnement dans un réseau de bord secondaire (NS) répondant à une norme CEI-1000-4-5 valable, notamment la norme CEI-1000-4-5:1995, lorsque l'appareil de mesure bifilaire (MS) contrôlé a résisté au contrôle réalisé conformément à la revendication précédente, et lorsque l'appareil de mesure bifilaire (MS) similaire est utilisé dans le moyen de transport, exclusivement sur son réseau de bord secondaire (NS) répondant à la norme CEI-1000-4-5, notamment à la norme CEI-1000-4-5:1995.
EP01943257A 2000-05-22 2001-04-18 Circuit et vehicule comprenant un appareil de mesure en technique deux fils et procede d'essai de cet appareil Expired - Lifetime EP1287511B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01943257A EP1287511B1 (fr) 2000-05-22 2001-04-18 Circuit et vehicule comprenant un appareil de mesure en technique deux fils et procede d'essai de cet appareil

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP00110818 2000-05-22
EP00110818A EP1158476A1 (fr) 2000-05-22 2000-05-22 Mesureur bifilaire, sa méthode à tester et son arrangement de test
PCT/EP2001/004386 WO2001091082A2 (fr) 2000-05-22 2001-04-18 Appareil de mesure en technique deux fils, procede d'essai de cet appareil, et dispositif d'essai associe
EP01943257A EP1287511B1 (fr) 2000-05-22 2001-04-18 Circuit et vehicule comprenant un appareil de mesure en technique deux fils et procede d'essai de cet appareil

Publications (2)

Publication Number Publication Date
EP1287511A2 EP1287511A2 (fr) 2003-03-05
EP1287511B1 true EP1287511B1 (fr) 2009-08-26

Family

ID=8168791

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00110818A Withdrawn EP1158476A1 (fr) 2000-05-22 2000-05-22 Mesureur bifilaire, sa méthode à tester et son arrangement de test
EP01943257A Expired - Lifetime EP1287511B1 (fr) 2000-05-22 2001-04-18 Circuit et vehicule comprenant un appareil de mesure en technique deux fils et procede d'essai de cet appareil

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00110818A Withdrawn EP1158476A1 (fr) 2000-05-22 2000-05-22 Mesureur bifilaire, sa méthode à tester et son arrangement de test

Country Status (7)

Country Link
US (1) US6967486B2 (fr)
EP (2) EP1158476A1 (fr)
KR (1) KR100673502B1 (fr)
AT (1) ATE441168T1 (fr)
AU (1) AU6588001A (fr)
DE (1) DE50115072D1 (fr)
WO (1) WO2001091082A2 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005047894B4 (de) * 2005-10-06 2010-05-12 Abb Ag Verfahren zur Prüfung der Betriebsfähigkeit von Messumformern
KR20130087150A (ko) * 2012-01-27 2013-08-06 한국전자통신연구원 반도체 칩의 ｅｍｃ 측정용 지그 및 이를 이용한 반도체 칩의 ｅｍｃ 측정 방법
US9527395B2 (en) 2014-05-02 2016-12-27 Fca Us Llc Access arrangement for the power system of an electric vehicle
DE102014011717B4 (de) * 2014-08-06 2021-11-18 Abb Schweiz Ag Verfahren und Vorrichtung zur eigensicheren, redundanten Stromversorgung von Feldgeräten

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331912A (en) * 1980-10-06 1982-05-25 Rosemount Inc. Circuit for converting a non-live zero current signal to a live zero DC output signal
US5748008A (en) * 1995-12-06 1998-05-05 Landreth; Keith W. Electrical integrity test system for boats
US5959372A (en) * 1997-07-21 1999-09-28 Emerson Electric Co. Power management circuit
US6265879B1 (en) * 1999-07-14 2001-07-24 Keith W. Landreth Electrical integrity test system for boats
US6559660B1 (en) * 2001-08-20 2003-05-06 Brunswick Corporation Method and apparatus for testing an electrical system of a marine vessel

Also Published As

Publication number Publication date
WO2001091082A3 (fr) 2002-10-10
ATE441168T1 (de) 2009-09-15
KR100673502B1 (ko) 2007-01-24
KR20030024677A (ko) 2003-03-26
US6967486B2 (en) 2005-11-22
EP1287511A2 (fr) 2003-03-05
US20030122537A1 (en) 2003-07-03
WO2001091082A2 (fr) 2001-11-29
EP1158476A1 (fr) 2001-11-28
AU6588001A (en) 2001-12-03
DE50115072D1 (de) 2009-10-08

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