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  • BSI
    BS EN IEC 60942:2018 Electroacoustics. Sound calibrators
    Edition: 2018
    $526.05
    / user per year

Description of BS EN IEC 60942:2018 2018

This document specifies the performance requirements for three classes of sound calibrator: class LS (Laboratory Standard), class 1 and class 2. Acceptance limits are smallest for class LS and greatest for class 2 instruments. Class LS sound calibrators are normally used only in the laboratory; class 1 and class 2 are considered as sound calibrators for field use. A class 1 sound calibrator is primarily intended for use with a class 1 sound level meter and a class 2 sound calibrator primarily with a class 2 sound level meter, as specified in IEC 61672‑1 .

The acceptance limits for class LS sound calibrators are based on the use of a laboratory standard microphone, as specified in IEC 61094‑1 , for demonstrations of conformance to the requirements of this document. The acceptance limits for class 1 and class 2 sound calibrators are based on the use of a working standard microphone, as specified in IEC 61094‑4 , for demonstrations of conformance to the requirements of this document.

To promote consistency of testing of sound calibrators and ease of use, this document contains three normative annexes – Annex A "Pattern evaluation tests", Annex B "Periodic tests", Annex C "Pattern evaluation report", and two informative Annexes – Annex D "Relationship between tolerance interval, corresponding acceptance interval and the maximum-permitted uncertainty of measurement" and Annex E "Example assessments of conformance to specifications of this document".

This document does not include requirements for equivalent free-field or random-incidence sound pressure levels, such as can be used in the overall sensitivity adjustment of a sound level meter.

A sound calibrator can provide other functions, for example, tonebursts. Requirements for these other functions are not included in this document.



Standard NumberBS EN IEC 60942:2018
TitleElectroacoustics. Sound calibrators
StatusUnder Review
Publication Date2018-03-26
ReplacesBS EN 60942:2003
Identical National Standard OfEN IEC 60942:2018, IEC 60942:2017, EN 60974-12:2011
DescriptorsAcoustoelectric devices, Sound sources, Performance testing, Sound intensity, Acoustic measurement, Signal distortion, Performance, Grades (quality), Acoustic testing, Accuracy, Approval testing, Environment (working), Acoustic equipment, Frequencies, Calibration, Sound-level meters, Measurement characteristics, Sound generators, Stability
ICS25.160.30 Welding equipment, 33.100.20 Immunity, 17.140.50 Electroacoustics
CommitteeEPL/29
ISBN978 0 580 90820 0
PublisherBSI
Pages60

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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