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October 2010 Newsletter

CEL630 Sound Level Meter

Environmental Noise and Occupational Noise

This month's newsletter is all about environmental noise and the new CEL630 series sound level meters, which are ideal for the following applications:

Environmental Noise

When we talk about "environmental noise", we are usually referring to noise from a factory, industrial site or construction site that is emitted into the community.

The measurement of environmental noise is usually instigated after complaints from residents or planning applications for business expansion.

To successfully measure environmental noise, a sound level meter with the following specifications is usually required:

  • Standards: IEC 61672 Class 1
  • Ability to make the following measurements:
    • LAeq (average sound level)
    • LA90 (background sound level)
    • LAmax (maximum sound level)
  • Automatically repeat these measurements (e.g. every 15 minutes)
  • Store all these measurements for download and analysis

Other noise measurement parameters are sometimes needed, such as 1/3 octave and other Ln values, but the LAeq, LA90 and LAmax are the most common.

In addition, it is usually very useful to have a store of the sound levels every second in case a more detailed check needs to be carried out at a specified time.

 

environmental noise

New CEL633 Sound Level Meter

The top-spec meter from the CEL630 series is the CEL633, which includes all the measurements needed for both environmental and occupational noise measurement.

As required by most regulations, the CEL633 measures the periodic LAeq, LA90 and LAmax. It also stores the level every second (or at other user selectable rates) so you can view a graph of the sound level over time.

Store All, Miss Nothing

The CEL633 automatically stores all parameters. There is no need to select which ones you want before pressing Start, so no risk of making a mistake in the field. As the meter has a single range covering 20 to 140 dB(A), you won't miss the very high or very low levels, as would be the case with a limited span meter that relies on you selecting the range.

More information about the CEL633

 

cel633 sound level meter

 

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