CEL246 Data Logging Integrating Sound Level Meter

CEL240 Class 2 CEL246 Class 2 Integrating

The CEL246 meets the strict demands of the international sound level meter standards and is provided with a Calibration Certificate at no extra cost, so you can make your noise measurements with confidence. This is most important when using a meter in a hearing protection and conservation program.

See Specifications page for more details about the standards and noise measurement range.

Integrating - Averaging Sound Level Meter

A standard (non-integrating) sound level meter gives an instantaneous reading of the sound level. In an environment where the sound levels are changing continuously, as most are, it can be very difficult to average this by eye. The solution is to use an Integrating sound level meter such as the CEL246, which will give you a reading of Leq, which is the average sound level.

Due to the risk of underestimating the average sound level, especially if you fail to take into account the logarithmic nature of the decibel, many regulations advise or even demand the use of an Integrating Sound Level Meter.

The European and UK noise at work regulations require the use of an Integrating sound level meter. Please see the notes on the Applications page about Noise at Work and Peak (Loud Bangs) noise measurements.

Digital Technology and Graphical Display

The graphical display gives the option of viewing the sound level as a simple number (shown to the left) or as a graph, clearly showing the variation of noise over time (see main image).

The CEL246 uses the latest in digital technology - models using the older analog techniques tend to drift more over time and with temperature and air pressure changes. Sampling and digitizing the signal closer to the microphone ensures a much more stable sound level meter for repeatable measurements.

Data Logging and Download Software

The CEL246 stores the sound level to internal memory at a rate that can be set from 1 second to 10 seconds. It also stores a summary of the measurement, including start time, date, measurement duration, maximum sound level, Lavg and Leq.

CasellaDrive Software - When the meter is connected to the computer's USB port, this free application causes it to act like a memory stick, giving direct access to the measurement files. These are in the standard CSV format that can be loaded directly into Excel or similar program. More details... dB24 Software - This optional application displays the sound level in real-time on your computer screen. It can also store the sound level to disk every second. This can be useful for continuous noise monitoring where long term records are needed.

Optional dB24 Software

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