NEN EN 50249 : 2003

1 Scope
2 Normative references
3 Definitions
4 Principles of operation
5 General requirements
   5.1 Enclosure
   5.2 Robustness
   5.3 UV protection
   5.4 Controls
        5.4.1 Operation
        5.4.2 Control size
   5.5 Temperature range
   5.6 Relative humidity
   5.7 Battery housing access
   5.8 Power supply polarity protection
   5.9 Power supply cell type
   5.10 Battery operating life
   5.11 Low battery warning
        5.11.1 General
        5.11.2 Receiver test requirements
        5.11.3 Transmitter test requirements
   5.12 Transmitter case buoyancy
   5.13 External electrical connector protection
   5.14 Hazardous electrical contact
   5.15 Surface temperature
   5.16 Electromagnetic compatibility
   5.17 Safety
6 Transmitter construction
   6.1 Transmitter case
   6.2 Weight
7 Electrical characteristics of the transmitter
   7.1 General
   7.2 On/off indication
   7.3 Frequency band
   7.4 Output level
   7.5 Output current
   7.6 Monitoring
   7.7 Operation across live conductors - Safety
   7.8 Operation across live conductors - Protection
8 Construction of the receiver
9 Electrical characteristics of the receiver
   9.1 General
   9.2 Visual/audio indication
   9.3 Sensitivity
   9.4 Selectivity
   9.5 Single target line performance
        9.5.1 Response Width
        9.5.2 Location Accuracy
        9.5.3 Depth Measurement Accuracy (if provided)
   9.6 Multiple target line performance
        9.6.1 Response Width
        9.6.2 Location Accuracy
        9.6.3 Depth Measurement Accuracy (if provided)
10 Labels
11 Documentation
12 Cross references
Annex A (normative) Test methods
Annex B (informative) General information for the user
Annex C (normative) Documentation provided by the manufacturer
Annex D (normative) Special national conditions

Gives 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.