EP1158476A1 - A two-wire measuring apparatus, a method of testing the same and a testing arrangement therefor - Google Patents

A two-wire measuring apparatus, a method of testing the same and a testing arrangement therefor Download PDF

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Publication number
EP1158476A1
EP1158476A1 EP00110818A EP00110818A EP1158476A1 EP 1158476 A1 EP1158476 A1 EP 1158476A1 EP 00110818 A EP00110818 A EP 00110818A EP 00110818 A EP00110818 A EP 00110818A EP 1158476 A1 EP1158476 A1 EP 1158476A1
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EP
European Patent Office
Prior art keywords
iec
measuring device
current
electrical system
transport
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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.)
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EP00110818A
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German (de)
French (fr)
Inventor
Georg Dr. 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
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Endress and Hauser SE and Co KG
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Application filed by Endress and Hauser SE and Co KG filed Critical Endress and Hauser SE and Co KG
Priority to EP00110818A priority Critical patent/EP1158476A1/en
Priority to PCT/EP2001/004386 priority patent/WO2001091082A2/en
Priority to DE50115072T priority patent/DE50115072D1/en
Priority to KR1020027015712A priority patent/KR100673502B1/en
Priority to AU65880/01A priority patent/AU6588001A/en
Priority to US10/276,298 priority patent/US6967486B2/en
Priority to AT01943257T priority patent/ATE441168T1/en
Priority to EP01943257A priority patent/EP1287511B1/en
Publication of EP1158476A1 publication Critical patent/EP1158476A1/en
Withdrawn legal-status Critical Current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, methods for their testing and suitable test arrangements.
  • Two-wire measuring devices are known Measuring devices that only have two conductors L1, L2, their electrical connection from and to the outside enable. These two leaders must be both for the Energy supply as well as for the transmission of one of the Measuring signal generated measuring device can be used.
  • the ones from Two-wire measuring device are measured signal values a standardized range from 4 mA to 20 mA associated direct currents that a current value within this range corresponds exactly to a measurement signal value.
  • the aforementioned energy supply takes place by means of an Operation on the two conductors connected from outside, delivering a DC voltage to a primary network NP belonging DC voltage source G, so that there is a so-called current loop closes.
  • a current measuring resistor Rm on which one for current current value and thus proportional to the measurement signal Voltage can be picked up outside of the measuring device and is further processable.
  • the resistance Rm can be far from the two-wire measuring device MS 'be arranged; then he's over correspondingly long lines connected to it. So is one pole NP1 of the primary network NP with the conductor L1 of the Two-wire measuring device MS 'and the other pole NP2 with the connected a terminal of the resistor Rm while whose other connection, so to speak, as an indirect second Primary network connection NP2 'is connected to the conductor L2.
  • HART is a registered trademark of HART users Group and the acronym for "Highway Addressable Remote Transducer ", ie for bus-addressed measuring devices) has been around long known in industrial metrology and introduced.
  • the HART protocol enables communication between a field and a process control level with the advantage of simultaneous portability of an analog measurement signal according to the 4 mA to 20 mA standard and the digital HART signal for operation, commissioning, maintenance, Query or control of the measuring devices at the field level.
  • a digital zero is replaced by two Sine waves of frequency 2.2 kHz and a digital One by a single sinusoidal frequency 1.2 kHz according to the Bell 202 Frequency Shift standard Keying realized. These sine waves are over the transfer two conductors by the flowing in it Electricity can be modulated.
  • EMC electromagnetic Compatibility
  • test regulations presuppose that of the energy supply serving, from the DC voltage source Q outgoing primary network in addition to DC voltage too generated high-energy interference pulses, which one to the network connected two-wire measuring device MS 'must withstand.
  • test regulations simulate real conditions as they are occur in practice if two-wire measuring devices e.g. on Means of transport, especially on ships, are used should. In the primary electrical system NP installed on ships the mentioned interference pulses are often present, see. 1. FIG. 1. The two conductors L1, L2 of today's two-wire measuring devices with the standard IEC-1000-4-5: 1995 intended for power supply lines Test signals are tested and they are therefore opposite dimension these test signals to be resistant.
  • An object of the invention is a two-wire measuring device specify that to operate in a Transport, especially in a ship, is determined.
  • a Another object of the invention is a method for testing a two-wire measuring device electromagnetic compatibility, especially according to standard IEC-1000-4-5: 1995, to be specified for operation in a Transport, especially in a ship, is determined.
  • Yet another object of the invention is to provide a Test arrangement for testing a two-wire measuring device to indicate electromagnetic compatibility, which for the Operation in a means of transport, especially in a ship, is determined.
  • a method for issuing a To state the operating permit of a two-wire measuring device, that for operation in a means of transport, especially in a Ship is determined.
  • a major advantage of the invention is that in two-wire measuring devices used in means of transport, esp. in ships to be used, not expensive and storage space, suppressing interference pulses or filtering components are required and that anyway an operating license according to the standard IEC 1000-4-5: 1995 can be issued for such two-wire measuring devices.
  • a common two-wire measuring device MS e.g. with a standard housing Gh, as a circuit block illustrated.
  • the two-wire measuring device MS measured at least one physical quantity, e.g. the Volume or mass flow of a fluid, or further its density, viscosity, pressure, or temperature, or furthermore the pressure difference between two media or also in general temperature, pressure, level, pH or gas concentration.
  • the invention is not the measuring principle of the two-wire measuring device MS and its electronic circuit, esp. not its evaluation electronics, but its measurement principle-independent certification whose circuit block is not detailed and explained.
  • the two-wire measuring device MS is for operation in one Transport, especially in a ship, determined. There is it is powered by a current from a current loop that is from one according to a valid standard IEC-1000-4-5, esp. the Standard IEC-1000-4-5: 1995, certified by one Primary vehicle electrical system NP powered and the Supply of a secondary vehicle electrical system serving NS Source circuit Q comes.
  • the two connections NP1, NP2 are thus connected to supply connections the source circuit Q, of which an active Part of the simplicity as a source g one DC voltage is shown 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 connections NS1, NS2 '.
  • the Current measuring resistor Rm between connection NS2 and Conductor L2 switched so that the measuring device side Connection of the resistor Rm as an indirect connection of the Secondary electrical system NS2 'can be called.
  • the filter components are dimensioned, designed and designed that the secondary vehicle electrical system NS a valid Standard IEC-1000-4-5, especially the standard IEC-1000-4-5: 1995, corresponds and therefore according to this Standard can be checked and certified.
  • the two-wire measuring device is intended for operation in the means of transport MS fed by a current of a current loop be, the current of which according to a valid standard IEC-1000-4-5, especially the standard IEC-1000-4-5: 1995, certified by the primary vehicle electrical system NP of the means of transport fed and the supply of the secondary electrical system NS serving source circuit Q comes.
  • This is enough Test regulations of the valid standard IEC-1000-4-5 and is or has already been EMC-certified So this operating license or the corresponding one Certificate.
  • the operating license of the two-wire measuring device MS so his EMC certificate is now given to him according to the valid standard IEC-1000-4-5 only issued if it without according to the test regulations of the applicable standard IEC-1000-4-5: 1995
  • To be EMC certified in the means of transport exclusively on its EMC-certified secondary electrical system is operated.
  • To meet this requirement can the two-wire measuring device MS e.g. with a appropriately dimensioned connection-connecting device be equipped.
  • the method according to the invention for testing the Two-wire measuring device MS on electromagnetic Compatibility, that for the operation in one Transport, especially in a ship, is determined as follows (also here the measuring device MS from explained current of the source circuit Q containing Current loop fed:
  • a hybrid generator especially according to the standard IEC-60-1 or IEC 469-1, generates a current / voltage surge, especially in this standard with regard to the time course of the Open circuit voltage and the time course of the Short-circuit current defined current / surge.
  • the Hybrid generator is also one of the standards mentioned defined decoupling network to simulate the Source circuit Q and the decoupling network that Test regulations of the standard IEC-1000-4-5: 1995 not sufficient two-wire measuring device MS downstream.
  • the operating license for operation on the secondary vehicle electrical system NS the means of transport, especially the ship, will be of the same type other two-wire measuring devices and thus the EMC certification granted them when the tested two-wire measuring device MS withstood the test.
  • a test arrangement according to the invention for testing a two-wire measuring device for electromagnetic compatibility that for the operation in a means of transport, esp. in one Ship, is determined, includes the hybrid generator already mentioned, esp. according to standard IEC-60-1 or IEC 469-1, for Generating the explained current / voltage surge that the Hybrid generator downstream decoupling network for Simulate the secondary electrical system NS and that Decoupling network downstream, according to the Test regulations of the valid standard IEC-1000-4-5 not certified two-wire measuring device.

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  • 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)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
  • Tests Of Electronic Circuits (AREA)
  • Testing Of Individual Semiconductor Devices (AREA)

Abstract

The inventive two conductor measuring device (MS) is intended for use in a means of transport, especially in a ship, and is supplied on-board with a current of a current loop, which originates from a source circuit (Q). Said source circuit is certified in accordance with a valid standard IEC-1000-4-5, especially in accordance with standard IEC-1000-4-5:1995, is supplied with power by a primary vehicle electrical system (NP) of the means of transport, and serves to supply a secondary vehicle electrical system (NS) with power. The two conductor measuring device (MS) is designed in such a way that it can not be certified for an electromagnetic compatibility in accordance with valid standard IEC-1000-4-5. During a method for testing the two conductor measuring device (MS) for electromagnetic compatibility, a hybrid generator, especially in accordance with standard IEC-60-1 or IEC 469-1, is used for generating a current/voltage surge. A decoupling network for simulating the source circuit (Q) is connected in outgoing circuit to the hybrid generator. A two conductor measuring device (MS), which does not satisfy the test specifications of the standard IEC-1000-4-5:1995, is connected in outgoing circuit to said decoupling network, and a type of approval for use on the secondary vehicle electrical system (NS) is granted to other two conductor measuring devices of the same type when the tested two conductor measuring device has withstood the test.

Description

Die Erfindung betrifft Zwei-Leiter-Messgeräte, Verfahren zu deren Prüfung und dafür geeignete Prüfanordungen.The invention relates to two-wire measuring devices, methods for their testing and suitable test arrangements.

Für die folgenden Erläuterungen wird auf Fig. 1 Bezug genommen. Zwei-Leiter-Messgeräte sind bekanntlich Messgeräte, die lediglich über zwei Leiter L1, L2 verfügen, die ihren elektrischen Anschluss von und nach außen ermöglichen. Diese beiden Leiter müssen sowohl für die Energiespeisung als auch für die Übertragung eines vom Messgerät erzeugten Messsignals benutzt werden. Die vom Zwei-Leiter-Messgerät abgegebenen Messsignalwerte sind einem standardisierten Bereich von 4 mA bis 20 mA derart zugeordnete Gleichströme, dass ein Stromwert innerhalb dieses Bereichs genau einem Messsignalwert entspricht.For the following explanations, reference is made to FIG. 1 taken. Two-wire measuring devices are known Measuring devices that only have two conductors L1, L2, their electrical connection from and to the outside enable. These two leaders must be both for the Energy supply as well as for the transmission of one of the Measuring signal generated measuring device can be used. The ones from Two-wire measuring device are measured signal values a standardized range from 4 mA to 20 mA associated direct currents that a current value within this range corresponds exactly to a measurement signal value.

Die erwähnte Energie-Speisung erfolgt mittels einer im Betrieb an die zwei Leiter von außerhalb angeschlossenen, eine Gleichspannung abgebenden, zu einem Primär-Netz NP gehörenden Gleichspannungsquelle G, so dass sich eine sogenannte Stromschleife schließt. In dieser Schleife liegt auch ein Strom-Messwiderstand Rm, an dem eine zum momentanen Stromwert und somit zum Messsignal proportionale Spannung außerhalb des Messgeräts abgreifbar und weiterverarbeitbar ist.The aforementioned energy supply takes place by means of an Operation on the two conductors connected from outside, delivering a DC voltage to a primary network NP belonging DC voltage source G, so that there is a so-called current loop closes. In this loop also a current measuring resistor Rm, on which one for current current value and thus proportional to the measurement signal Voltage can be picked up outside of the measuring device and is further processable.

Der Widerstand Rm kann weit entfernt vom Zwei-Leiter-Messgerät MS' angeordnet sein; dann ist er über entsprechend lange Leitungen daran angeschlossen. Somit ist der eine Pol NP1 des Primär-Netzes NP mit dem Leiter L1 des Zwei-Leiter-Messgeräts MS' und der andere Pol NP2 mit dem einen Anschluss des Widerstands Rm verbunden, während dessen anderer Anschluss sozusagen als indirekter zweiter Primär-Netz-Anschluss NP2' mit dem Leiter L2 verbunden ist.The resistance Rm can be far from the two-wire measuring device MS 'be arranged; then he's over correspondingly long lines connected to it. So is one pole NP1 of the primary network NP with the conductor L1 of the Two-wire measuring device MS 'and the other pole NP2 with the connected a terminal of the resistor Rm while whose other connection, so to speak, as an indirect second Primary network connection NP2 'is connected to the conductor L2.

Auf den beiden Leitern L1, L2 können zusätzlich zu den genannten Stromwerten, die Analogsignale darstellen, auch nach einem der üblichen Standards, wie z.B. dem sogenannten HART-Protokoll, Digitalsignale übertragen werden. Das HART-Protokoll (HART ist eine eingetragene Marke der HART User Group und das Akronym für "Highway Addressable Remote Transducer", also für bus-addressierte Messgeräte) ist seit langem in der industriellen Messtechnik bekannt und eingeführt.On the two conductors L1, L2 in addition to the mentioned current values, which represent analog signals, too according to one of the usual standards, e.g. the so-called HART protocol, digital signals are transmitted. The HART protocol (HART is a registered trademark of HART users Group and the acronym for "Highway Addressable Remote Transducer ", ie for bus-addressed measuring devices) has been around long known in industrial metrology and introduced.

Das HART-Protokoll ermöglicht eine Kommunikation zwischen einer Feld- und einer Prozessleitebene mit dem Vorteil der gleichzeitigen Übertragbarkeit eines Analog-Messsignals nach dem 4-mA-bis-20-mA-Standard und des digitalen HART-Signals zur Bedienung, Inbetriebnahme, Instandhaltung, Abfrage oder Steuerung der Messgeräte in der Feldebene.The HART protocol enables communication between a field and a process control level with the advantage of simultaneous portability of an analog measurement signal according to the 4 mA to 20 mA standard and the digital HART signal for operation, commissioning, maintenance, Query or control of the measuring devices at the field level.

Während das Analog-Messsignal kontinuierlich verfügbar bleibt, erfolgt eine zyklische Abfrage und gegebenenfalls eine nachfolgende Anweisung durch die digitalen HART-Signale. Dabei wird eine digitale Null durch zwei Sinusschwingungen der Frequenz 2,2 kHz und eine digitale Eins durch eine einzige Sinusschwingung der Frequenz 1,2 kHz entsprechend dem Standard Bell 202 Frequency Shift Keying realisiert. Diese Sinusschwingungen werden über die zwei Leiter übertragen, indem sie dem darin fließenden Strom aufmoduliert werden. While the analog measurement signal is continuously available remains, there is a cyclical query and if necessary a subsequent instruction by the digital HART signals. A digital zero is replaced by two Sine waves of frequency 2.2 kHz and a digital One by a single sinusoidal frequency 1.2 kHz according to the Bell 202 Frequency Shift standard Keying realized. These sine waves are over the transfer two conductors by the flowing in it Electricity can be modulated.

Heutige Zwei-Leiter-Messgeräte sind nur marktfähig, also vom Hersteller verkäuflich, wenn sie auf elektromagnetische Verträglichkeit (kurz: EMV) geprüft sind. Dies hat nach dem derzeit gültigen internationalen Standard IEC-1000-4-5:1995 zu erfolgen, der in den einzelnen Ländern in entsprechende nationale Standards übernommen worden ist, und ist eine sogenannte Typ-Prüfung. Dies bedeutet, dass nicht jedes einzelne hergestellte Geräte geprüft wird, sondern dass die Prüfung eines oder weniger Geräte aus einem Ensemble identischer Geräte ausreichend ist.Today's two-wire measuring devices are only marketable, so Can be sold by the manufacturer if it is based on electromagnetic Compatibility (short: EMC) are checked. This has after currently valid international standard IEC-1000-4-5: 1995 to take place in the corresponding in the individual countries national standards has been adopted and is one so-called type test. This means that not everyone individual manufactured devices is checked, but that the Testing one or fewer devices from an ensemble identical devices is sufficient.

Der Standard IEC-1000-4-5:1995 ist seit 1995 gültig. Nach der bis 1995 gültigen Vorgänger-Version wurden die beiden Leiter L1, L2 lediglich als Messsignale übertragende Signalleitungen betrachtet und unterlagen somit nicht den demgegenüber für Energiespeiseleitungen schon immer strengeren Vorschriften, nach denen diese geprüft wurden.The IEC-1000-4-5: 1995 standard has been in effect since 1995. To the previous version, which was valid until 1995, became the two Conductors L1, L2 only transmit as measurement signals Signal lines were therefore not considered and were not subject to the in contrast, always for energy supply lines stricter regulations according to which they were tested.

1995 hat sich diese Betrachtungsweise und Zuordnung jedoch bei direktem Anschluss der Zwei-Leiter-Messgeräte an die Gleichspannungsquelle G bzw. deren Primär-Netz NP dahingehend verschärft, dass nunmehr die zwei Leiter L1, L2 nicht mehr nur als Signalleitungen, sondern auch als Speise-Leitungen definiert sind, so dass sie den genannten strengen Prüfvorschriften unterliegen und nach diesen zu prüfen sind.In 1995, however, this perspective and assignment with direct connection of the two-wire measuring devices to the DC voltage source G or its primary network NP tightened to the extent that now the two conductors L1, L2 no longer just as signal lines, but also as Feed lines are defined so that they are named subject to strict test regulations and according to them are checking.

Diese Prüfvorschriften setzen voraus, dass das der Energie-Speisung dienende, von der Gleichspannungsquelle Q ausgehende Primär-Netz zusätzlich zur Gleichspannung auch energiereiche Störimpulse generiert, denen ein an das Netz angeschlossenes Zwei-Leiter-Messgerät MS' standhalten muss.These test regulations presuppose that of the energy supply serving, from the DC voltage source Q outgoing primary network in addition to DC voltage too generated high-energy interference pulses, which one to the network connected two-wire measuring device MS 'must withstand.

Diese Prüfvorschriften bilden reale Zustände nach, wie sie in praxi vorkommen, wenn Zwei-Leiter-Messgeräte z.B. auf Verkehrsmitteln, insb. auf Schiffen, verwendet werden sollen. Im auf Schiffen installierten Primär-Bordnetz NP sind die erwähnten Störimpulse nämlich häufig vorhanden, vgl. hierzu die Fig. 1. Somit müssen die zwei Leiter L1, L2 von heutigen Zwei-Leiter-Messgeräten mit den vom Standard IEC-1000-4-5:1995 für Energiespeiseleitungen vorgesehenen Prüfsignalen getestet werden, und sie sind daher gegenüber diesen Prüfsignalen widerstandsfähig zu dimensionieren.These test regulations simulate real conditions as they are occur in practice if two-wire measuring devices e.g. on Means of transport, especially on ships, are used should. In the primary electrical system NP installed on ships the mentioned interference pulses are often present, see. 1. FIG. 1. The two conductors L1, L2 of today's two-wire measuring devices with the standard IEC-1000-4-5: 1995 intended for power supply lines Test signals are tested and they are therefore opposite dimension these test signals to be resistant.

Dies ist jedoch praktisch nicht sinnvoll, da es bedeuten würde, dass in das Zwei-Leiter-Messgerät MS', das ein standardisiertes Gehäuse Gh aufweist, elektronische Komponenten, z.B eine Spule L' und ein Kondensator C', in geeigneter Kombination eingangsseitig einzubauen sind, die der Unterdrückung oder mindestens der Filterung der auf dem Primär-Bordnetz NP auftretenden Störimpulse dienen.However, this is practically not useful since it will mean would that in the two-wire measuring device MS ', the one has standardized housing Gh, electronic Components, e.g. a coil L 'and a capacitor C', in suitable combination must be installed on the input side the suppression or at least the filtering of the on the Primary on-board electrical system NP serve to generate interference.

Dieser Einbau erhöht aber die Herstellkosten. Ferner steht der für diese meist mehrfach vorzusehenden Filter-Komponenten benötigte Stauraum SF nicht zur Verfügung, so dass das standardisierte Gehäuse Gh durch Hinzufügung eines Gehäusevolumens Gz vergrößert werden müßte, was die Kosten zusätzlich erhöht. Schließlich wird die Übertragbarkeit des erwähnten HART-Protokolls durch die Filter-Komponenten stark beeinträchtigt, wenn nicht unmöglich macht.This installation increases the manufacturing costs. It also says of the filter components that are usually to be provided multiple times required storage space SF not available, so that the standardized housing Gh by adding a Housing volume Gz would have to be increased, which increases the cost additionally increased. Finally, the portability of the HART protocol mentioned by the filter components severely impaired, if not impossible.

Eine Aufgabe der Erfindung besteht darin, ein Zwei-Leiter-Messgerät anzugeben, das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt ist. Eine weitere Aufgabe der Erfindung besteht darin, ein Verfahren zur Prüfung eines Zwei-Leiter-Messgeräts auf elektromagnetische Verträglichkeit, insb. nach Standard IEC-1000-4-5:1995, anzugeben, das zum Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt ist. An object of the invention is a two-wire measuring device specify that to operate in a Transport, especially in a ship, is determined. A Another object of the invention is a method for testing a two-wire measuring device electromagnetic compatibility, especially according to standard IEC-1000-4-5: 1995, to be specified for operation in a Transport, especially in a ship, is determined.

Noch eine weitere Aufgabe der Erfindung besteht darin, eine Prüfanordung zum Prüfen eines Zwei-Leiter-Messgeräts auf elektromagnetische Verträglichkeit anzugeben, das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt ist. Schließlich besteht eine Aufgabe der Erfindung darin, ein Verfahren zum Erteilen einer Betriebserlaubnis eines Zwei-Leiter-Messgeräts anzugeben, das zum Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt ist.Yet another object of the invention is to provide a Test arrangement for testing a two-wire measuring device to indicate electromagnetic compatibility, which for the Operation in a means of transport, especially in a ship, is determined. After all, there is a task of Invention therein, a method for issuing a To state the operating permit of a two-wire measuring device, that for operation in a means of transport, especially in a Ship, is determined.

Zur Lösung dieser Aufgaben besteht eine erste Variante der Erfindung in einem Zwei-Leiter-Messgerät,

  • das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt ist,
  • wobei es dort von einem Strom einer Stromschleife gespeist ist,
    • der von einer nach einem gültigen Standard IEC-1000-4-5, insb. dem Standard IEC-1000-4-5:1995, zertifizierten, von einem Primär-Bordnetz des Verkehrsmittels gespeisten und der Versorgung eines Sekundär-Bordnetzes dienenden Quellenschaltung stammt, und
  • wobei das Zwei-Leiter-Messgerät so konzipiert ist, dass es für elektromagnetische Verträglichkeit nach dem gültigen Standard IEC-1000-4-5 nicht zertifizierbar ist.
To achieve these tasks, a first variant of the invention consists in a two-wire measuring device,
  • that is intended for operation in a means of transport, especially in a ship,
  • where it is fed by a current from a current loop,
    • which comes from a source circuit certified according to a valid standard IEC-1000-4-5, in particular the standard IEC-1000-4-5: 1995, fed by a primary vehicle electrical system of the means of transport and serving the supply of a secondary vehicle electrical system, and
  • the two-wire measuring device is designed in such a way that it cannot be certified for electromagnetic compatibility according to the applicable standard IEC-1000-4-5.

Zur Lösung der erwähnten Aufgaben besteht eine zweite Variante der Erfindung in einem Verfahren zur Prüfung eines Zwei-Leiter-Messgeräts auf elektromagnetische Verträglichkeit, das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt und dort von einem Strom einer Stromschleife gespeist wird, der von einer nach einem gültigen Standard IEC-1000-4-5, insb. dem Standard IEC-1000-4-5:1995, zertifizierten, von einem Primär-Bordnetz des Verkehrsmittels gespeisten und der Versorgung eines Sekundär-Bordnetzes dienenden Quellenschaltung stammt, bei welchem Verfahren

  • ein Hybrid-Generator, insb. nach Standard IEC-60-1 oder IEC 469-1, zum Erzeugen eines Strom/Spannungsstoßes verwendet,
  • dem Hybrid-Generator ein Entkoppelnetzwerk zum Simulieren der Quellenschaltung nachgeschaltet,
  • dem Entkoppelnetzwerk ein den Prüfvorschriften des Standards IEC-1000-4-5:1995 nicht genügendes Zwei-Leiter-Messgerät nachgeschaltet und
  • gleichartigen weiteren Zwei-Leiter-Messgeräten eine Betriebserlaubnis zum Betrieb am Sekundär-Bordnetz erteilt wird, wenn das geprüfte Zwei-Leiter-Messgerät der Prüfung standgehalten hat.
To achieve the above-mentioned objects, a second variant of the invention consists in a method for testing a two-wire measuring device for electromagnetic compatibility, which is intended for operation in a means of transport, in particular in a ship, and is fed there by a current from a current loop which comes from a source circuit certified according to a valid standard IEC-1000-4-5, in particular the standard IEC-1000-4-5: 1995, fed by a primary on-board network of the means of transport and serving to supply a secondary on-board network what procedure
  • a hybrid generator, especially according to standard IEC-60-1 or IEC 469-1, used to generate a current / voltage surge,
  • the hybrid generator is followed by a decoupling network to simulate the source circuit,
  • the decoupling network is followed by a two-wire measuring device that does not meet the test requirements of the IEC-1000-4-5: 1995 standard and
  • Similar two-wire measuring devices of the same type are granted an operating license for operation on the secondary electrical system if the tested two-wire measuring device has withstood the test.

Zur Lösung der genannten Aufgaben besteht eine dritte Variante der Erfindung in einer Prüfanordnung zum Prüfen eines Zwei-Leiter-Messgeräts auf elektromagnetische Verträglichkeit, das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt und dort von einem Strom einer Stromschleife gespeist wird, der von einer nach einem gültigen Standard IEC-1000-4-5, insb. dem Standard IEC-1000-4-5:1995, zertifizierten, von einem Primär-Bordnetz des Verkehrsmittels gespeisten und der Versorgung eines Sekundär-Bordnetzes dienenden Quellenschaltung stammt, welche Prüfanordnung umfaßt:

  • einen Hybrid-Generator, insb. nach Standard IEC-60-1 oder IEC 469-1, zum Erzeugen eines Strom/Spannungsstoßes,
  • ein dem Hybrid-Generator nachgeschaltetes Entkoppelnetzwerk zum Simulieren der Quellenschaltung und
  • ein dem Entkoppelnetzwerk nachgeschaltetes, nach den Prüfvorschriften des gültigen Standards IEC-1000-4-5 nicht zertifiziertes Zwei-Leiter-Messgerät.
To achieve the above-mentioned objects, a third variant of the invention consists in a test arrangement for testing a two-wire measuring device for electromagnetic compatibility, which is intended for operation in a means of transport, in particular in a ship, and is fed there by a current from a current loop which comes from a source circuit certified according to a valid standard IEC-1000-4-5, in particular the standard IEC-1000-4-5: 1995, fed by a primary on-board network of the means of transport and serving to supply a secondary on-board network which test arrangement includes:
  • a hybrid generator, especially according to the IEC-60-1 or IEC 469-1 standard, for generating a current / voltage surge,
  • a decoupling network downstream of the hybrid generator for simulating the source circuit and
  • a two-wire measuring device connected downstream of the decoupling network and not certified according to the test regulations of the applicable standard IEC-1000-4-5.

Zur Lösung der erwähnten Aufgaben besteht eine vierte Variante der Erfindung in einem Verfahren zum Erteilen einer Betriebserlaubnis für ein Zwei-Leiter-Messgerät, das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt und dort von einem Strom einer Stromschleife gespeist ist, der von einer nach einem gültigen Standard IEC-1000-4-5, insb. dem Standard IEC-1000-4-5:1995, zertifizierten, von einem Primär-Bordnetz des Verkehrsmittels gespeisten und der Versorgung eines Sekundär-Bordnetzes dienenden Quellenschaltung stammt, bei welchem Verfahren die Betriebserlaubnis dem Zwei-Leiter-Messgerät nur dann erteilt wird, wenn es, ohne nach den Prüfvorschriften des gültigen Standards IEC-1000-4-5 zertifiziert zu sein, im Verkehrsmittel ausschließlich an dessen zertifizierter QuellenSchaltung betrieben wird.There is a fourth to solve the above-mentioned tasks Variant of the invention in a process for granting an operating license for a two-wire measuring device that for operation in a means of transport, especially in a Ship, determined and there by a stream one Current loop is fed from one to one applicable standard IEC-1000-4-5, especially the standard IEC-1000-4-5: 1995, certified, from a primary electrical system of the means of transport and the supply of one Secondary electrical system serving source circuit comes from which procedure the operating permit for the two-wire measuring device is only granted if it is without the Test regulations of the valid standard IEC-1000-4-5 to be certified in the means of transport only whose certified source circuit is operated.

Ein wesentlicher Vorteil der Erfindung besteht darin, dass in Zwei-Leiter-Messgeräten, die in Verkehrsmitteln, insb. in Schiffen, verwendet werden sollen, keine kostspieligen und Stauraum benötigenden, Störimpulse unterdrückenden bzw. filternden Komponenten erforderlich sind und dass trotzdem eine Betriebserlaubnis nach dem Standard IEC 1000-4-5:1995 für solche Zwei-Leiter-Messgeräte erteilt werden kann.A major advantage of the invention is that in two-wire measuring devices used in means of transport, esp. in ships to be used, not expensive and storage space, suppressing interference pulses or filtering components are required and that anyway an operating license according to the standard IEC 1000-4-5: 1995 can be issued for such two-wire measuring devices.

Die Erfindung wird nun anhand der weiteren Figur der Zeichnung, Fig. 2, näher erläutert, in der in der Form eines Blockschaltbilds schematisch ein Ausführungsbeispiel eines entsprechend der Erfindung betriebenen Zwei-Leiter-Messgerät dargestellt ist.The invention is now based on the further figure of the Drawing, Fig. 2, explained in more detail in the form a block diagram schematically an embodiment a two-wire measuring device operated according to the invention is shown.

In Fig. 2 ist ein übliches Zwei-Leiter-Messgerät MS, z.B. mit einem Standard-Gehäuse Gh, als Schaltungsblock veranschaulicht. Mittels des Zwei-Leiter-Messgeräts MS wird mindestens eine physikalische Größe gemessen, z.B. der Volumen- oder der Massedurchfluss eines Fluids, oder ferner dessen Dichte, Viskosität, Druck, oder Temperatur, oder ferner die Druckdifferenz zwischen zwei Medien oder aber auch ganz allgemein Temperatur, Druck, Füllstand, pH-Wert oder Gaskonzentration. In Fig. 2 a common two-wire measuring device MS, e.g. with a standard housing Gh, as a circuit block illustrated. Using the two-wire measuring device MS measured at least one physical quantity, e.g. the Volume or mass flow of a fluid, or further its density, viscosity, pressure, or temperature, or furthermore the pressure difference between two media or also in general temperature, pressure, level, pH or gas concentration.

Da die Erfindung nicht das Messprinzip des Zwei-Leiter-Messgerät MS und dessen elektronische Schaltung, insb. nicht dessen Auswerte-Elektronik, sondern dessen messprinzip-unabhängige Zertifizierung betrifft, wird dessen Schaltungsblock nicht näher detailliert und erläutert.Since the invention is not the measuring principle of the two-wire measuring device MS and its electronic circuit, esp. not its evaluation electronics, but its measurement principle-independent certification whose circuit block is not detailed and explained.

Das Zwei-Leiter-Messgerät MS ist für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt. Dort ist es von einem Strom einer Stromschleife gespeist, der von einer nach einem gültigen Standard IEC-1000-4-5, insb. dem Standard IEC-1000-4-5:1995, zertifizierten, von einem Primär-Bordnetz NP des Verkehrsmittels gespeisten und der Versorgung eines Sekundär-Bordnetzes NS dienenden Quellenschaltung Q stammt.The two-wire measuring device MS is for operation in one Transport, especially in a ship, determined. There is it is powered by a current from a current loop that is from one according to a valid standard IEC-1000-4-5, esp. the Standard IEC-1000-4-5: 1995, certified by one Primary vehicle electrical system NP powered and the Supply of a secondary vehicle electrical system serving NS Source circuit Q comes.

Die beiden Anschlüsse NP1, NP2 liegen somit an Speise-Anschlüssen der Quellenschaltung Q, von der ein aktiver Teil der Einfachheit halber als Quelle g einer Gleichspannung dargestellt ist und zu der Filter-Komponenten, wie z.B. eine Spule L und ein Kondensator C, gehören, so dass an deren Ausgang ein Sekundär-Bordnetz NS mit den Anschlüssen NS1, NS2' entsteht. Auch hier ist der Strom-Messwiderstand Rm zwischen den Anschluss NS2 und den Leiter L2 geschaltet, so dass der messgerät-seitige Anschluss des Widerstands Rm als indirekter Anschluss des Sekundär-Bordnetzes NS2' bezeichnet werden kann.The two connections NP1, NP2 are thus connected to supply connections the source circuit Q, of which an active Part of the simplicity as a source g one DC voltage is shown 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 connections NS1, NS2 '. Here too is the Current measuring resistor Rm between connection NS2 and Conductor L2 switched so that the measuring device side Connection of the resistor Rm as an indirect connection of the Secondary electrical system NS2 'can be called.

Die Filter-Komponenten sind so bemessen, konzipiert und ausgelegt, dass das Sekundär-Bordnetz NS einem gültigen Standard IEC-1000-4-5, insb. dem Standard IEC-1000-4-5:1995, entspricht und somit nach diesem Standard geprüft und zertifiziert werden kann. The filter components are dimensioned, designed and designed that the secondary vehicle electrical system NS a valid Standard IEC-1000-4-5, especially the standard IEC-1000-4-5: 1995, corresponds and therefore according to this Standard can be checked and certified.

Aufgrund dieser erfindungsgemäßen Ausbildung braucht das Zwei-Leiter-Messgerät MS überraschenderweise lediglich so konzipiert zu sein, dass es für eine elektromagnetische Verträglichkeit nach dem gültigen Standard IEC-1000-4-5 nicht EMV-zertifizierbar ist.Because of this training according to the invention that needs Surprisingly, only two-wire measuring device MS designed to be electromagnetic Compatibility according to the valid standard IEC-1000-4-5 is not EMC-certified.

Somit kann einem für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmten Zwei-Leiter-Messgerät MS eine Betriebserlaubnis wie folgt erteilt werden, d.h. es kann wie folgt EMV-zertifiziert werden:Thus, for operation in a means of transport, especially in a ship, certain two-wire measuring device MS an operating license is issued as follows, i.e. it can be EMC certified as follows:

Beim Betrieb im Verkehrsmittel soll das Zwei-Leiter-Messgerät MS von einem Strom einer Stromschleife gespeist sein, wobei der Strom von der nach einem gültigen Standard IEC-1000-4-5, insb. dem Standard IEC-1000-4-5:1995, zertifizierten, vom Primär-Bordnetz NP des Verkehrsmittels gespeisten und der Versorgung des Sekundär-Bordnetzes NS dienenden Quellenschaltung Q stammt. Diese genügt den Prüfvorschriften des gültigen Standards IEC-1000-4-5 und wird bzw. wurde bereits danach EMV-zertifiziert, besitzt also diese Betriebserlaubnis bzw. das entsprechende Zertifikat.The two-wire measuring device is intended for operation in the means of transport MS fed by a current of a current loop be, the current of which according to a valid standard IEC-1000-4-5, especially the standard IEC-1000-4-5: 1995, certified by the primary vehicle electrical system NP of the means of transport fed and the supply of the secondary electrical system NS serving source circuit Q comes. This is enough Test regulations of the valid standard IEC-1000-4-5 and is or has already been EMC-certified So this operating license or the corresponding one Certificate.

Die Betriebserlaubnis des Zwei-Leiter-Messgeräts MS, also dessen EMV-Zertifikat, wird ihm nun entsprechend dem gültigen Standard IEC-1000-4-5 nur dann erteilt, wenn es, ohne nach den Prüfvorschriften des gültigen Standards IEC-1000-4-5:1995 EMV-zertifiziert zu sein, im Verkehrsmittel ausschließlich an dessen EMV-zertifiziertem Sekundär-Bordnetz betrieben wird. Um diese Bedingung zu erfüllen, kann das Zwei-Leiter-Messgerät MS z.B. mit einer entsprechend dimensionierten Anschluss-Verbindungs-Vorrichtung ausgestattet sein. The operating license of the two-wire measuring device MS, so his EMC certificate is now given to him according to the valid standard IEC-1000-4-5 only issued if it without according to the test regulations of the applicable standard IEC-1000-4-5: 1995 To be EMC certified in the means of transport exclusively on its EMC-certified secondary electrical system is operated. To meet this requirement can the two-wire measuring device MS e.g. with a appropriately dimensioned connection-connecting device be equipped.

Das Verfahren entsprechend der Erfindung zur Prüfung des Zwei-Leiter-Messgeräts MS auf elektromagnetische Verträglichkeit, das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt ist, wird wie folgt durchgeführt (auch hier wird das Messgerät MS vom erläuterten Strom der die Quellenschaltung Q enthaltenden Stromschleife gespeist:The method according to the invention for testing the Two-wire measuring device MS on electromagnetic Compatibility, that for the operation in one Transport, especially in a ship, is determined as follows (also here the measuring device MS from explained current of the source circuit Q containing Current loop fed:

Ein Hybrid-Generator, insb. nach Standard IEC-60-1 oder IEC 469-1, erzeugt einen Strom/Spannungsstoß, insb. den in diesem Standard hinsichtlich des zeitlichen Verlaufs der Leerlaufspannung und des zeitlichen Verlaufs des Kurzschlußstroms definierten Strom/Spannungsstoß. Dem Hybrid-Generator ist ein im erwähnten Standard ebenfalls definiertes Entkoppelnetzwerk zum Simulieren der Quellenschaltung Q und dem Entkoppelnetzwerk das den Prüfvorschriften des Standards IEC-1000-4-5:1995 nicht genügende Zwei-Leiter-Messgerät MS nachgeschaltet.A hybrid generator, especially according to the standard IEC-60-1 or IEC 469-1, generates a current / voltage surge, especially in this standard with regard to the time course of the Open circuit voltage and the time course of the Short-circuit current defined current / surge. The Hybrid generator is also one of the standards mentioned defined decoupling network to simulate the Source circuit Q and the decoupling network that Test regulations of the standard IEC-1000-4-5: 1995 not sufficient two-wire measuring device MS downstream.

Die Betriebserlaubnis zum Betrieb am Sekundär-Bordnetz NS des Verkehrsmittels, insb. des Schiffes, wird gleichartigen weiteren Zwei-Leiter-Messgeräten und somit die EMV-Zertifizierung ihnen erteilt, wenn das geprüfte Zwei-Leiter-Messgerät MS der Prüfung standgehalten hat.The operating license for operation on the secondary vehicle electrical system NS the means of transport, especially the ship, will be of the same type other two-wire measuring devices and thus the EMC certification granted them when the tested two-wire measuring device MS withstood the test.

Eine erfindungsgemäße Prüfanordnung zum Prüfen eines Zwei-Leiter-Messgeräts auf elektromagnetische Verträglichkeit, das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt ist, umfaßt den bereits erwähnten Hybrid-Generator, insb. nach Standard IEC-60-1 oder IEC 469-1, zum Erzeugen des erläuterten Strom/Spannungsstoßes, das dem Hybrid-Generator nachgeschaltete Entkoppelnetzwerk zum Simulieren des Sekundär-Bordnetzes NS und das dem Entkoppelnetzwerk nachgeschaltete, nach den Prüfvorschriften des gültigen Standards IEC-1000-4-5 nicht zertifizierte Zwei-Leiter-Messgerät.A test arrangement according to the invention for testing a two-wire measuring device for electromagnetic compatibility, that for the operation in a means of transport, esp. in one Ship, is determined, includes the hybrid generator already mentioned, esp. according to standard IEC-60-1 or IEC 469-1, for Generating the explained current / voltage surge that the Hybrid generator downstream decoupling network for Simulate the secondary electrical system NS and that Decoupling network downstream, according to the Test regulations of the valid standard IEC-1000-4-5 not certified two-wire measuring device.

Claims (4)

Zwei-Leiter-Messgerät (MS), das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt ist, wobei es dort von einem Strom einer Stromschleife gespeist ist, der von einer nach einem gültigen Standard IEC-1000-4-5, insb. dem Standard IEC-1000-4-5:1995, zertifizierten, von einem Primär-Bordnetz (NP) des Verkehrsmittels gespeisten und der Versorgung eines Sekundär-Bordnetzes (NS) dienenden Quellenschaltung (Q) stammt, und wobei das Zwei-Leiter-Messgerät (MS) so konzipiert ist, dass es für eine elektromagnetische Verträglichkeit nach dem gültigen Standard IEC-1000-4-5 nicht zertifizierbar ist. Two-wire measuring device (MS), that is intended for operation in a means of transport, especially in a ship, where it is fed by a current from a current loop, the one that is certified by a valid standard IEC-1000-4-5, in particular the standard IEC-1000-4-5: 1995, powered by a primary electrical system (NP) of the means of transport and the supply of a secondary electrical system ( NS) serving source circuit (Q), and the two-wire measuring device (MS) is designed in such a way that it cannot be certified for electromagnetic compatibility according to the applicable standard IEC-1000-4-5. Verfahren zur Prüfung eines Zwei-Leiter-Messgeräts (MS) auf elektromagnetische Verträglichkeit, das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt und dort von einem Strom einer Stromschleife gespeist wird, der von einer nach einem gültigen Standard IEC-1000-4-5, insb. dem Standard IEC-1000-4-5:1995, zertifizierten, von einem Primär-Bordnetz (NP) des Verkehrsmittels gespeisten und der Versorgung eines Sekundär-Bordnetzes (NS) dienenden Quellenschaltung (Q) stammt, bei welchem Verfahren ein Hybrid-Generator, insb. nach Standard IEC-60-1 oder IEC 469-1, zum Erzeugen eines Strom/Spannungsstoßes verwendet, dem Hybrid-Generator ein Entkoppelnetzwerk zum Simulieren der Quellenschaltung (Q) nachgeschaltet, dem Entkoppelnetzwerk ein den Prüfvorschriften des Standards IEC-1000-4-5:1995 nicht genügendes Zwei-Leiter-Messgerät (NS) nachgeschaltet und gleichartigen weiteren Zwei-Leiter-Messgeräten eine Betriebserlaubnis zum Betrieb am Sekundär-Bordnetz (NS) erteilt wird, wenn das geprüfte Zwei-Leiter-Messgerät der Prüfung standgehalten hat. Method for testing a two-wire measuring device (MS) for electromagnetic compatibility, which is intended for operation in a means of transport, in particular in a ship, and is fed there by a current from a current loop, which is supplied by a current IEC standard. 1000-4-5, in particular the standard IEC-1000-4-5: 1995, certified, powered by a primary vehicle electrical system (NP) of the means of transport and serving a secondary vehicle electrical system (NS) source circuit (Q), in which procedure a hybrid generator, especially according to standard IEC-60-1 or IEC 469-1, used to generate a current / voltage surge, a decoupling network downstream of the hybrid generator for simulating the source circuit (Q), the decoupling network is followed by a two-wire measuring device (NS) that does not meet the test requirements of the IEC-1000-4-5: 1995 standard and Similar two-wire measuring devices of the same type are granted an operating license for operation on the secondary on-board electrical system (NS) if the tested two-wire measuring device has withstood the test. Prüfanordnung zum Prüfen eines Zwei-Leiter-Messgeräts (MS) auf elektromagnetische Verträglichkeit, das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt und dort von einem Strom einer Stromschleife gespeist wird, der von einer nach einem gültigen Standard IEC-1000-4-5, insb. dem Standard IEC-1000-4-5:1995, zertifizierten, von einem Primär-Bordnetz (NP) des Verkehrsmittels gespeisten und der Versorgung eines Sekundär-Bordnetzes (NS) dienenden Quellenschaltung (Q) stammt, welche Prüfanordnung umfaßt: einen Hybrid-Generator, insb. nach Standard IEC-60-1 oder IEC 469-1, zum Erzeugen eines Strom/Spannungsstoßes, ein dem Hybrid-Generator nachgeschaltetes Entkoppelnetzwerk zum Simulieren der Quellenschaltung (Q) und ein dem Entkoppelnetzwerk nachgeschaltetes, nach den Prüfvorschriften des gültigen Standards IEC-1000-4-5 nicht zertifiziertes Zwei-Leiter-Messgerät (MS). Test arrangement for testing a two-wire measuring device (MS) for electromagnetic compatibility, which is intended for operation in a means of transport, in particular in a ship, and is fed there by a current from a current loop, which is supplied by a current IEC standard. 1000-4-5, in particular the standard IEC-1000-4-5: 1995, certified, powered by a primary vehicle electrical system (NP) of the means of transport and serving a secondary vehicle electrical system (NS) source circuit (Q), which test arrangement includes: a hybrid generator, especially according to the IEC-60-1 or IEC 469-1 standard, for generating a current / voltage surge, a decoupling network downstream of the hybrid generator for simulating the source circuit (Q) and a two-wire measuring device (MS) connected downstream of the decoupling network and not certified according to the test regulations of the applicable standard IEC-1000-4-5. Verfahren zum Erteilen einer Betriebserlaubnis für ein Zwei-Leiter-Messgerät (MS), das für den Betrieb in einem Verkehrsmittel, insb. in einem Schiff, bestimmt und dort von einem Strom einer Stromschleife gespeist ist, der von einer nach einem gültigen Standard IEC-1000-4-5, insb. dem Standard IEC-1000-4-5:1995, zertifizierten, von einem Primär-Bordnetz (NP) des Verkehrsmittels gespeisten und der Versorgung eines Sekundär-Bordnetzes (NS) dienenden Quellenschaltung (Q) stammt, bei welchem Verfahren dem Zwei-Leiter-Messgerät (MS) die Betriebserlaubnis nur dann erteilt wird, wenn es, ohne nach den Prüfvorschriften des gültigen Standards IEC-1000-4-5 zertifiziert zu sein, im Verkehrsmittel ausschließlich an dessen zertifiziertem Sekundär-Bordnetz (NS) betrieben wird.Procedure for granting an operating license for a Two-wire measuring device (MS) designed for operation in one Transport, especially in a ship, determined and there is fed by a current of a current loop which is from one according to a valid standard IEC-1000-4-5, esp. the Standard IEC-1000-4-5: 1995, certified by one Primary electrical system (NP) of the means of transport and the Supply of a secondary electrical system (NS) serving Source circuit (Q) comes from which method the Two-wire measuring device (MS) the operating license only then is granted if it is without according to the test regulations of the applicable standards to be certified in IEC-1000-4-5 Transport only at its certified Secondary electrical system (NS) is operated.
EP00110818A 2000-05-22 2000-05-22 A two-wire measuring apparatus, a method of testing the same and a testing arrangement therefor Withdrawn EP1158476A1 (en)

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EP00110818A EP1158476A1 (en) 2000-05-22 2000-05-22 A two-wire measuring apparatus, a method of testing the same and a testing arrangement therefor
PCT/EP2001/004386 WO2001091082A2 (en) 2000-05-22 2001-04-18 Two conductor measuring device, method for testing the same and testing system therefor
DE50115072T DE50115072D1 (en) 2000-05-22 2001-04-18 CIRCUIT ARRANGEMENT AND TRANSPORT CONTAIN A TWO-LADDER MEASURING DEVICE AND METHOD FOR ITS TESTING
KR1020027015712A KR100673502B1 (en) 2000-05-22 2001-04-18 Two conductor measuring device, method for testing the same and testing system therefor
AU65880/01A AU6588001A (en) 2000-05-22 2001-04-18 Two conductor measuring device, method for testing the same and testing system therefor
US10/276,298 US6967486B2 (en) 2000-05-22 2001-04-18 Two conductor measuring device, method for testing the same and testing system therefor
AT01943257T ATE441168T1 (en) 2000-05-22 2001-04-18 CIRCUIT ARRANGEMENT AND MEANS OF TRANSPORT INCLUDING A TWO-WIRE MEASURING DEVICE AND METHOD FOR TESTING THEREOF
EP01943257A EP1287511B1 (en) 2000-05-22 2001-04-18 Circuit arrangement and vehicle comprising a two conductor measuring device and method for testing the same

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DE102005047894B4 (en) * 2005-10-06 2010-05-12 Abb Ag Method for checking the operability of transmitters
KR20130087150A (en) * 2012-01-27 2013-08-06 한국전자통신연구원 Jig for measuring emc of semiconductor chip and method for measuring emc of semiconductor chip using the same
US9527395B2 (en) 2014-05-02 2016-12-27 Fca Us Llc Access arrangement for the power system of an electric vehicle
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US6967486B2 (en) 2005-11-22
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AU6588001A (en) 2001-12-03
WO2001091082A2 (en) 2001-11-29
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