🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
BS EN 62489-2:2011

BS EN 62489-2:2011

$102.76

Electroacoustics. Audio-frequency induction loop systems for assisted hearing – Methods of calculating and measuring the low-frequency magnetic field emissions from the loop for assessing conformity with guidelines on limits for human exposure

Published By Publication Date Number of Pages
BSI 2011 20
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Categories: ,

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

This part of IEC 62489 applies to audio-frequency induction-loop systems for assisted hearing. It may also be applied to such systems used for other purposes, as far as it is applicable. The standard is intended for assessment of human exposure to low-frequency magnetic fields produced by the system, by calculation and by in-situ testing.

This standard does not deal with other aspects of safety, for which IEC 60065 applies, or with EMC.

PDF Catalog

PDF Pages PDF Title
6 English

CONTENTS
7 1 Scope
2 Normative references
3 Rated values
8 4 Situation regarding current standards
5 Configurations of loops
5.1 Main types of configuration
5.2 General considerations
5.3 Large-area loops
9 5.4 Medium-area loops
5.5 Small-area loops
5.6 Solenoid antennas
Figures

Figure 1 – An earhook induction transducer, with a BTE (behind the ear) hearing aid body for scale
10 6 Calculations
6.1 General
6.2 Solenoid antennas
7 Measurements
7.1 General
7.2 Input signal
11 7.3 Measuring instrument
8 Comparison of calculated or measured results with guidelines or limits
12 9 Meeting limits or guidelines
10 Measurement uncertainty
Figure 2 – K factor as a function of least distance between wire and disc
13 Annex A (informative) Rationale for this product-family magnetic field emission standard for audio-frequency induction-loop systems (AFILS) in the context of human exposure to non-ionizi
ng radiation
Figure A.1 – ICNIRP magnetic field reference levels
15 Table A.1 – Extract from IEC 62311, Table A.1 – Characteristics and parameters of the equipment to be considered, with the application to AFILS added
17 Annex B (informative)
Example calculation using the coupling factor K
18 Bibliography

Related products

BS EN 62489-2:2011
$102.76