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BS EN 50413:2019

BS EN 50413:2019

$142.49

Basic standard on measurement and calculation procedures for human exposure to electric, magnetic and electromagnetic fields (0 Hz – 300 GHz)

Published By Publication Date Number of Pages
BSI 2019 30
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This document provides general methods for measurement and calculation of quantities associated with human exposure to electromagnetic fields in the frequency range from 0 Hz to 300 GHz. It is intended specifically to be used for the assessment of emissions from products and comparison of these with the exposure limits for the general public given in Council Recommendation 1999/519/EC, and those given for workers in Directive 2013/35/EU, as appropriate. It also is intended to be used for assessment of human exposure to electromagnetic fields in the workplace to determine compliance with the requirements of Directive 2013/35/EU.

This standard deals with quantities that can be measured or calculated external to the body, notably electric and magnetic field strength or power density, and includes the measurement and calculation of quantities inside the body that form the basis for protection guidelines. In particular the standard provides information on:

  • definitions and terminology,

  • characteristics of electromagnetic fields,

  • measurement of exposure quantities,

  • instrumentation requirements,

  • methods of calibration,

  • measurement techniques and procedures for evaluating exposure,

  • calculation methods for exposure assessment.

Where an applicable electromagnetic field standard specific to a product or technology exists it is expected to be used rather than this document. EN 62311:—, Table 1 gives a list of relevant standards.

PDF Catalog

PDF Pages PDF Title
2 undefined
7 1 Scope
2 Normative references
8 3 Terms and definitions
14 4 General
4.1 General remarks
4.2 Exposure assessment approaches
4.3 Characterization of the field source
15 4.4 Static and low frequency fields
4.5 High frequency range
4.6 Multiple frequency fields and multiple sources
5 Assessment of human exposure by measurement
5.1 General remarks
16 5.2 Electromagnetic field measurement
5.2.1 Measurement instrumentation
5.2.1.1 Low frequency range
5.2.1.2 High frequency range
17 5.2.2 Measurement protocol
5.2.2.1 General
5.2.2.2 Low frequency range
18 5.2.2.3 High frequency range
19 5.2.2.4 Identifications before the measurements
5.2.2.5 Assessment methods
5.3 Body current measurement
5.4 Contact current measurement
5.5 SAR measurement
20 5.6 Uncertainty of measurement
21 5.7 Calibration
5.7.1 Low frequency range
5.7.2 High frequency range
6 Assessment of exposure by calculation
6.1 Low frequency
6.2 High frequency
22 6.3 Uncertainty of calculation
7 Assessment report
7.1 General
7.2 Items to be recorded in the assessment report
7.2.1 Assessment method
7.2.2 Presentation of the measurement results
23 7.2.3 Presentation of the calculation results
24 Annex A (informative)Uncertainty assessment for the measurement of EMF
A.1 Steps in establishing an uncertainty budget
A.1.1 Selection of uncertainty contributions
A.1.2 Classes of uncertainty contributions
25 A.1.3 Probability distribution and standard uncertainty of each contribution
A.1.3.1 General
A.1.3.2 Normal
A.1.3.3 Rectangular
A.1.3.4 U-shaped
26 A.1.3.5 Triangular
A.1.4 Combined standard uncertainty
A.1.4.1 Sensitivity coefficients
A.1.4.2 Correlated input quantities
27 A.1.4.3 Combined standard uncertainty
A.1.5 Expanded uncertainty
A.2 Examples for uncertainty budgets
A.2.1 General
A.2.2 Example of an uncertainty budget for field strength measurement using a system with antenna and spectrum analyser
28 A.2.3 Example of an uncertainty budget for field strength measurement using a broadband measurement system

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BS EN 50413:2019
$142.49