There are not too many options for the CR160 series Optimus sound level meter, as even the basic model includes all the parameters that you need for occupational noise measurements. The data logging and octave band options can be added at a later date without having to return the meter, so you can even decide later if you are unsure at the moment.

The most important decision will be whether to get the meter on its own (if you already have access to a Calibrator), or whether to go for one of the packages. First, some technical details:

Type 1 or Type 2?

A Type 1 sound level meter is a little more accurate than a Type 2 model. It is also more expensive. If you are using the meter exclusively for occupational noise measurements then the regulations are quite clear: Type 2 is adequate. For this reason we recommend the Type 2 model.

However, if you need to make other noise measurements, such as noise emitting from your factory into the local environment, then it might be wise to go for a Type 1 meter. In these instances the local enforcement authority may expect measurements made with a Type 1 meter.

In summary: For occupational noise measurements go for Type 2.

If you want a bit more information then please visit our FAQ page about Class / Type.

With this option fitted the meter stores a summary of each measurement along with a time history (gives a graph of the noise levels throughout the measurement). It comes with software and download cable.

A very useful option as it makes storing results and presenting reports easier. This option can be added at a later date without returning the meter.

With this option fitted, the meter splits the spectrum into bands to provide information about the frequency content. Meters with the Octave Band option always have the Data Logging option fitted too.

The option is very useful when monitoring areas with very high noise levels. The octave band measurements are used by the software to calculate the level at the ear when wearing different hearing protectors. This option can be added at a later date without returning the meter.