This sound level meter is ideal for most environmental noise surveys, including boundary monitoring and BS4142 type assessments.

It is particularly good at making timed measurements. For example, it can make repeating 5 minute measurements of Leq and L90, also storing the level (LAeq) every second, giving a graph of the noise level over time.

If you need to carry out a frequency analysis of the noise levels then Real-Time 1/3 Octave Band Filters can be added (either at the time of purchase or at a later date).

This meter has a very wide span, which means there is no need to select the measurement range before starting work. It also means that the meter will pick up the quiet background level but be ready when a noisy car drives past.

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For short term environmental noise measurement where you only need the overall LAeq, Ln (L10, L90, etc.), LAmax and similar parameters, but where you still need repeatable and reliable Class 1 or Class 2 measurements, as demanded by most environmental noise standards.

The CEL621 range of meters has a fixed preamplifier, which reduces the cost for applications where a microphone extension cable is not needed.

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The Noise Nuisance Recorder consists of a Class 1 Sound Level Meter enclosed in a strong, lockable carrying case. As well as recording the noise levels, this unit records the actual audio, so you can listen to whatever was causing the noise.

The audio recording is started either by the remote controller or by automatic threshold trigger.

This unit is usually used for monitoring noise from neighbours: dogs barking, music, machinery.

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The outdoor noise monitoring kits offer protection against rain and other poor weather conditions, allowing for longer term surveys.

The kits consist of an outdoor microphone system, weatherproof carrying case, rechargeable battery, microphone extension cable and download cable.

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