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CEL240 Class 2 Sound Level Meter

using the sound level meter
CEL240 Sound Level Meter

Using It

The CEL240 Sound Level Meter is controlled using just two buttons, one to the left and one to the right. The graphical display ensures that operation and the selection of options is as easy as possible.


switch on1. Switch On

Ensure 3 x AA batteries are fitted on press the red button to switch the sound level meter on.

After a brief warm-period of just a few seconds, the meter will show the current sound level on the display.

The exact content of the display depends on how you set the meter up last time, as it remembers these settings for your convenience.

2. Calibration Check

Some regulations and guidelines state that the meter's calibration should be checked before making measurements, and that you should keep records of these calibration checks.

Fit the Calibrator over the microphone as shown on the right and switch it on. The meter automatically detects the presence and correct fitting of the Calibrator and then starts the calibration process, which only takes a few seconds.

calibration check
Calibration Check


3. Changing Settings

As the meter saves its settings, you should only need to do this occasionally. The left-hand button cycles through the following main settings:

Display Type Graph or numbers
Measurement Range 30 to 100 dB or 60 to 130 dB
Time Weighting Fast, Slow or Impulse
Frequency Weighting "A" or "C" weighting

The right-hand button is used to change the current setting of any of these parameters.

sound meter display

4. Make the Measurements

You can now read the sound level from the display.

In the example on the right, the meter is set to read the Fast Sound Level (LAF). The current level is 53 dB(A) and the maximum (since last reset) is 80.9 dB(A).

Press the reset button (right-hand button) to reset the max reading.


Type 2 / Class 2 Sound Level Meter
In stock
Kit with Meter, Calibrator and Case
In stock


Weekly Hire
Kit with higher spec. CEL244 Integrating Meter and Calibrator
More pricing information

CEL24x Range

Sound Level Meter
From £298.00
Logging Sound Meter
From £457.00
Logging Integrating Meter
From £602.00

How to Buy

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Click the button or call 0845 680 0312.

Purchase Order
Or by fax: 0845 680 0316.

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Prices and Ordering

The sound level meter is available alone or as part of a Kit, which includes Meter, Calibrator and Carrying Case.

Order Code
Price (GBP)
excl VAT
Type 2 / Class 2 Sound Level Meter
In stock
Kit with CEL240 Sound Level Meter, Calibrator, Windshield, Case
In stock


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