Tag Archives: IEC 61672

What is the Difference Between Class and Type for Sound Level Meters?

The sound level meters and noise dosemeters that Cirrus manufactures are designed to meet the performance criteria laid down in various standards. For example, the optimus sound level meters are designed to meet the requirements of BS EN 61672-1:2003 which is also known as IEC 61672-1:2002. Within these standards there are many different performance criteria that the instrument must meet Read More…

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Why do instrument standards have different dates?

I’ve been asked recently to confirm if a sound level meter is marked as meeting IEC 61672-1:2002, does it also meet BS EN 61672-1:2003? Instruments such as sound level meters are designed to meet certain standards and these are published by a range of International, Regional and National standards organisations. In the case of sound level meters, the standards that Read More…

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