Sound level meters measure sound pressure level and are commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft noise.
Sound level meters are divided into two classes---what were called 'types' in previous standards. The two classes have the same design centre goals but the tolerances differ. Class 1 instruments have a wider frequency range and a tighter tolerance than a similar, lower cost, Class 2 unit. This applies to both the sound level meter itself as well as the associated calibrator. Most national standards permit the use of "at least a Class 2 instrument" and for many measurements, there is little practical point in using a Class 1 unit; these are best employed for research and law enforcement. New in the standard IEC 61672 is a minimum 60 dB linear span requirement and Z-frequency-weighting, with a general tightening of limit tolerances, as well as the inclusion of measurement uncertainty in the testing regime. This makes is unlikely that a sound level meter designed to the older 60651 and 60804 standards will meet the requirements of IEC 61672 : 2003. http://en.wikipedia.org/wiki/Sound_level_meter
This model is: 407730
Current Location: 36-228
Vendor: Extech Instruments
Manual: Instruction Manual
Specifications: Datasheet
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