{"id":231317,"date":"2024-10-19T15:03:57","date_gmt":"2024-10-19T15:03:57","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-609422018\/"},"modified":"2024-10-25T09:22:51","modified_gmt":"2024-10-25T09:22:51","slug":"bs-en-iec-609422018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-609422018\/","title":{"rendered":"BS EN IEC 60942:2018"},"content":{"rendered":"

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\u20111<\/span> <\/span>.<\/p>\n

The acceptance limits for class LS sound calibrators are based on the use of a laboratory standard microphone, as specified in IEC 61094\u20111<\/span> <\/span>, 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\u20114<\/span> <\/span>, for demonstrations of conformance to the requirements of this document.<\/p>\n

To promote consistency of testing of sound calibrators and ease of use, this document contains three normative annexes \u2013 Annex A<\/span> “Pattern evaluation tests”, Annex B<\/span> “Periodic tests”, Annex C<\/span> “Pattern evaluation report”, and two informative Annexes \u2013 Annex D<\/span> “Relationship between tolerance interval, corresponding acceptance interval and the maximum-permitted uncertainty of measurement” and Annex E<\/span> “Example assessments of conformance to specifications of this document”.<\/p>\n

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.<\/p>\n

A sound calibrator can provide other functions, for example, tonebursts. Requirements for these other functions are not included in this document.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
7<\/td>\nEnglish
CONTENTS <\/td>\n<\/tr>\n
10<\/td>\nFOREWORD <\/td>\n<\/tr>\n
12<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
13<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
15<\/td>\n3 Terms and definitions <\/td>\n<\/tr>\n
17<\/td>\n4 Reference environmental conditions
5 Requirements
5.1 General <\/td>\n<\/tr>\n
18<\/td>\nTables
Table 1 \u2013 Sound calibrator classes and designations <\/td>\n<\/tr>\n
19<\/td>\n5.2 Adaptors <\/td>\n<\/tr>\n
20<\/td>\n5.3 Sound pressure level
5.3.1 General
5.3.2 Generated sound pressure level
5.3.3 Short-term level fluctuation <\/td>\n<\/tr>\n
21<\/td>\n5.3.4 Sound pressure level over range of supply voltage
5.4 Frequency
5.4.1 General
5.4.2 Frequency of sound generated by the sound calibrator
Table 2 \u2013 Acceptance limits for sound pressure level and short-term level fluctuation, at and around reference environmental conditions
Table 3 \u2013 Acceptance limits for the effect of supply voltage on sound pressure level, under reference environmental conditions <\/td>\n<\/tr>\n
22<\/td>\n5.5 Influence of static pressure, air temperature and humidity
Table 4 \u2013 Acceptance limits for frequency, at and around reference environmental conditions <\/td>\n<\/tr>\n
23<\/td>\n5.6 Total distortion + noise
Table 5 \u2013 Acceptance limits for sound pressure level, over the specified range of environmental conditions
Table 6 \u2013 Acceptance limits for frequency, over the specified range of environmental conditions <\/td>\n<\/tr>\n
24<\/td>\n5.7 Power supply requirements
5.8 Specification and calibration of microphones
5.8.1 Microphone models and adaptors
5.8.2 Microphone sensitivity level
Table 7 \u2013 Maximum total distortion + noise <\/td>\n<\/tr>\n
25<\/td>\n5.9 Electromagnetic compatibility
5.9.1 General
5.9.2 Radio-frequency emissions
5.9.3 Electrostatic discharges
5.9.4 Immunity to power- and radio-frequency fields <\/td>\n<\/tr>\n
26<\/td>\n6 Instrument marking and documentation
6.1 Marking of the sound calibrator <\/td>\n<\/tr>\n
27<\/td>\n6.2 Individual calibration chart for a class LS sound calibrator
6.3 Instruction manual <\/td>\n<\/tr>\n
29<\/td>\nAnnexes
Annex A (normative) Pattern evaluation tests
A.1 General
A.2 Submission for test <\/td>\n<\/tr>\n
30<\/td>\nA.3 Principal values
A.4 Marking of the sound calibrator and supplied documentation
A.5 Performance tests at and around reference environmental conditions
A.5.1 General
A.5.2 Orientation
A.5.3 Ambient noise <\/td>\n<\/tr>\n
31<\/td>\nA.5.4 Microphone specification
A.5.5 Sound pressure level <\/td>\n<\/tr>\n
32<\/td>\nA.5.6 Sound pressure level stability \u2013 Short-term level fluctuation <\/td>\n<\/tr>\n
33<\/td>\nA.5.7 Frequency
Table A.1 \u2013 Maximum-permitted uncertainty of measurement for a coverage probability of 95 %, for sound pressure level and short-term level fluctuation at and around reference environmental conditions <\/td>\n<\/tr>\n
34<\/td>\nA.5.8 Total distortion + noise
Table A.2 \u2013 Maximum-permitted uncertainty of measurement for a coverage probability of 95 % for frequency, at and around reference environmental conditions <\/td>\n<\/tr>\n
35<\/td>\nA.6 Environmental tests
A.6.1 General
A.6.2 Influence of static pressure
Table A.3 \u2013 Maximum-permitted uncertainty of measurement for a coverage probability of 95 % for total distortion + noise, over the appropriate range of environmental conditions <\/td>\n<\/tr>\n
37<\/td>\nA.6.3 Acclimatization requirements for tests of the influence of variations in air temperature and relative humidity
A.6.4 Abbreviated test of influence of air temperature and humidity combined
Table A.4 \u2013 Maximum-permitted uncertainty of measurement for a coverage probability of 95 %, for sound pressure level, over the specified range of environmental conditions <\/td>\n<\/tr>\n
40<\/td>\nA.6.5 Influence of air temperature
Table A.5 \u2013 Maximum-permitted uncertainty of measurement for a coverage probability of 95 % for frequency, over the specified range of environmental conditions <\/td>\n<\/tr>\n
41<\/td>\nA.6.6 Influence of relative humidity <\/td>\n<\/tr>\n
42<\/td>\nA.6.7 Influence of air temperature and humidity combined <\/td>\n<\/tr>\n
43<\/td>\nA.7 Electromagnetic compatibility
A.7.1 General
A.7.2 Radio-frequency emissions <\/td>\n<\/tr>\n
44<\/td>\nA.7.3 Electrostatic discharges <\/td>\n<\/tr>\n
45<\/td>\nA.7.4 Immunity to power- and radio-frequency fields <\/td>\n<\/tr>\n
47<\/td>\nAnnex B (normative) Periodic tests
B.1 General <\/td>\n<\/tr>\n
48<\/td>\nB.2 Submission for test
B.3 Preliminary inspection
B.4 Performance tests
B.4.1 Orientation
B.4.2 Ambient noise
B.4.3 Environmental conditions
B.4.4 Additional equipment <\/td>\n<\/tr>\n
49<\/td>\nB.4.5 Microphone specification
B.4.6 Sound pressure level <\/td>\n<\/tr>\n
50<\/td>\nB.4.7 Frequency
B.4.8 Total distortion + noise <\/td>\n<\/tr>\n
51<\/td>\nB.5 Calibration of the sound calibrator with other models of microphone
B.6 Documentation <\/td>\n<\/tr>\n
53<\/td>\nAnnex C (normative) Pattern evaluation report
C.1 General
C.2 Marking
C.3 Submission for test
C.4 Pattern evaluation report content <\/td>\n<\/tr>\n
55<\/td>\nAnnex D (informative) Relationship between tolerance interval, corresponding acceptance interval and the maximum-permitted uncertainty of measurement
Figures
Figure D.1 \u2013 Relationship between tolerance interval, corresponding acceptance interval and the maximum-permitted uncertainty of measurement <\/td>\n<\/tr>\n
56<\/td>\nAnnex E (informative) Example assessments of conformance to specifications of this document
E.1 General
E.2 Conformance criteria
E.3 Example test results <\/td>\n<\/tr>\n
57<\/td>\nTable E.1 \u2013 Examples of assessment of conformance <\/td>\n<\/tr>\n
58<\/td>\nFigure E.1 \u2013 Examples of assessment of conformance <\/td>\n<\/tr>\n
59<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Electroacoustics. Sound calibrators<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2018<\/td>\n60<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":231320,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[430,2641],"product_tag":[],"class_list":{"0":"post-231317","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-25-160-30","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/231317","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/231320"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=231317"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=231317"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=231317"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}