EN 50249:2002
(Main)Electromagnetic locators for buried pipes and cables - Performance and safety
Electromagnetic locators for buried pipes and cables - Performance and safety
This notification gives guidance for the choice of metallic pipe and cable locators
Elektromagnetische Ortungsgeräte für unter Erde verlegte Rohre und Kabel - Leistungsmerkmale und Sicherheit
Localisateurs électromagnétiques pour câbles et canalisations enterrés - Performances et sécurité
Electromagnetic locators for buried pipes and cables - Performance and safety
General Information
Standards Content (Sample)
SLOVENSKI SIST EN 50249:2004
STANDARD
januar 2004
(istoveten EN 50249:2002)
Electromagnetic locators for buried pipes and cables - Performance and safety
ICS 17.220.20 Referenčna številka
© Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno
EUROPEAN STANDARD EN 50249
NORME EUROPÉENNE
EUROPÄISCHE NORM October 2002
ICS 17.220.20
English version
Electromagnetic locators for buried pipes and cables -
Performance and safety
Localisateurs électromagnétiques Elektromagnetische Ortungsgeräte für
pour câbles et canalisations enterrés - unter Erde verlegte Rohre und Kabel -
Performances et sécurité Leistungsmerkmale und Sicherheit
This European Standard was approved by CENELEC on 2002-07-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50249:2002 E
Foreword
This European Standard was prepared by CENELEC BTWG 72-2, Metallic pipe and cable
locators.
The text of the draft was submitted to the formal vote and was approved by CENELEC as
EN 50249 on 2002-07-01.
The following dates were fixed:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-07-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-07-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, Annexes A, C and D are normative and Annex B is informative.
Of all pipe and cable locators, those employing electromagnetic principles are the most
commonly used for locating buried metallic plant.
Pipe and cable locators are used for the following purposes:
– to determine the position of a buried target line at a particular location;
– to trace the route of a buried target line;
– to determine the position of lines buried adjacent to target lines.
Such locators make a major contribution towards minimizing the risk of damaging buried plant,
and injury to operatives, during subsequent excavation.
This European Standard specifies the minimum performance requirements to which all pipe and
cable locators should conform, in order to ensure that locators have an acceptable performance
consistent with the user's needs.
__________
– 3 – EN 50249:2002
Contents
1 Scope. 5
2 Normative references. 5
3 Definitions. 6
4 Principles of operation. 7
5 General requirements. 8
5.1 Enclosure. 8
5.2 Robustness. 8
5.3 UV protection.8
5.4 Controls. 8
5.4.1 Operation.8
5.4.2 Control size.8
5.5 Temperature range. 8
5.6 Relative humidity . 8
5.7 Battery housing access. 9
5.8 Power supply polarity protection. 9
5.9 Power supply cell type . 9
5.10 Battery operating life. 9
5.11 Low battery warning. 9
5.11.1 General.9
5.11.2 Receiver test requirements. 10
5.11.3 Transmitter test requirements. 10
5.12 Transmitter case buoyancy. 10
5.13 External electrical connector protection . 10
5.14 Hazardous electrical contact. 10
5.15 Surface temperature.10
5.16 Electromagnetic compatibility. 10
5.17 Safety. 10
6 Transmitter construction. 11
6.1 Transmitter case.11
6.2 Weight. 11
7 Electrical characteristics of the transmitter . 11
7.1 General. 11
7.2 On/off indication . 11
7.3 Frequency band.11
7.4 Output level. 11
7.5 Output current.12
7.6 Monitoring. 12
7.7 Operation across live conductors – Safety . 12
7.8 Operation across live conductors – Protection . 12
8 Construction of the receiver . 12
9 Electrical characteristics of the receiver . 13
9.1 General. 13
9.2 Visual/audio indication . 13
9.3 Sensitivity . 13
9.4 Selectivity . 14
9.5 Single target line performance . 15
9.5.1 Response Width.15
9.5.2 Location Accuracy.15
9.5.3 Depth Measurement Accuracy (if provided) . 15
9.6 Multiple target line performance. 15
9.6.1 Response width.15
9.6.2 Location accuracy.15
9.6.3 Depth measurement accuracy (if provided). 18
10 Labels. 18
11 Documentation. 18
12 Cross references. 18
Annex A (normative) Test methods. 21
Annex B (informative) General information for the user. 33
Annex C (normative) Documentation provided by the manufacturer . 36
Annex D (normative) Special national conditions. 38
Figure 1 – Single target line – Response width .16
Figure 2 – Single target line – Location accuracy.16
Figure 3 – Multiple target lines – Response width .17
Figure 4 – Multiple target lines – Location accuracy.17
Figure A.1.a – Test rig – Plan view .23
Figure A.1.b – Receiver test position x-x .23
Figure A.2 – Receiver audible output test apparatus .27
Figure A.3 – Test method and test equipment for impact test .31
Table 1 – Cross-references .19
– 5 – EN 50249:2002
1 Scope
This European Standard specifies the performance and safety requirements for outdoor portable
electromagnetic locators for the location of buried conductive pipes, cables and wires (including
allied components) by means of detecting the electromagnetic field caused by a flow of a.c.
current.
An electromagnetic locator is not designed for use for specific cable identification purposes.
This European Standard excludes the following locators and locating systems:
a) radar systems;
b) fix point marker systems;
c) vibrating probes;
d) apparatus which detect such items as internal wiring, structural supports, and conduit in
buildings;
e) apparatus and built-in facility designed for the detection of metallic objects;
f) sondes and accessories for use for pipe location and guidance of drilling systems;
g) non-portable locators;
h) cable identifiers;
i) cable/insulation fault locators.
This standard is only applicable to locators, any accessible part of which is at less than
hazardous live, as defined in EN 61010-1.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
EN 50065-1 Signalling on low-voltage electrical installations in the frequency range
3 kHz to 148,5 kHz – Part 1: General requirements, frequency bands and
electromagnetic disturbances
EN 60068-2-5 Environmental testing – Part 2 : Tests – Test Sa: Simulated solar radiation
at ground level (IEC 60068-2-5)
EN 60068-2-6 Environmental testing – Part 2 : Tests – Test Fc: Vibration (sinusoidal)
(IEC 60068-2-6)
EN 60068-2-29 Basic environmental testing procedures – Part 2: Tests – Test Eb and
guidance: Bump (IEC 60068-2-29)
EN 60068-2-32 Basic environmental testing procedures – P
...
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