IEC 60651:1979/AMD1:1993
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Amendment 1 - Sound level meters
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
09-03-2020
English - French, Spanish, Castilian
21-09-1993
Contains changes to the clauses of IEC 651 and a new appendix D withequations for design-goal frequency weightings.
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