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Until 2003 there were separate standards for exponential and linear integrating sound level meters, (IEC 60651 and IEC 60804—both now withdrawn), but since then the combined standard IEC 61672 has described both types of meter. For short L eq to be valuable the manufacturer must ensure that each separate L eq element fully complies with IEC ...
A graph of the A-, B-, C- and D-weightings across the frequency range 10 Hz – 20 kHz Video illustrating A-weighting by analyzing a sine sweep (contains audio). A-weighting is a form of frequency weighting and the most commonly used of a family of curves defined in the International standard IEC 61672:2003 and various national standards relating to the measurement of sound pressure level. [1]
IEC 60651 Sound level meters (Withdrawn, replaced by IEC 61672-1:2002 and IEC 61672-2:2003) IEC 60652 Loading tests on overhead line structures; IEC 60654 Industrial-process measurement and control equipment – Operating conditions; IEC 60657 Non-ionizing radiation hazards in the frequency range from 10 MHz to 300 000 MHz
Download as PDF; Printable version; ... Pages in category "IEC standards" ... IEC 61672; IEC 61701; IEC 61724; IEC 61727; IEC 61730; IEC 61753;
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IEC 61131-3 is the third part (of 10) of the international standard IEC 61131 for programmable logic controllers. It was first published in December 1993 [1] by the IEC; the current (third) edition was published in February 2013. [2] Part 3 of IEC 61131 deals with basic software architecture and programming languages of the control program ...
IEC 61000-4-4 is the International Electrotechnical Commission's immunity standard based on electrical fast transient (EFT) / burst transients. This publication is part of the greater IEC 61000 group of standards which is covered under IEC TR 61000-4-1:2016. [1] The current third version of this standard (2012) replaces the second version (2004 ...
IEC 61131 is an IEC standard for programmable controllers. It was first published in 1993; [ 1 ] the current (third) edition dates from 2013. [ 2 ] It was known as IEC 1131 before the change in numbering system by IEC.