Environmental Monitoring Equipment & Supplies • Sales, Rental & Service by Enviro-Equipment — Charlotte, North Carolina USA

  • Simple operation for quick and easy sound measurements.
  • Two selectable measurement ranges, 30-100 or 60-130 dB.
  • Meets ANSI S1.4 and IEC 61672 class 2 (IEC 60651 where appropriate) standards.
  • Easy to calibrate on site with 120 series field calibrator.
  • Datalogging model available.

A simple survey instrument such as the 24x Series Sound Level Meter is ideal for general noise measurements like walk through surveys, spot checks on machinery or testing of fire alarms. Using the latest digital technology the sound level meter is able to give the highest levels of accuracy and performance.

Model Selection CEL-240 CEL-246
Instantaneous and maximum levels
Logging of 1s levels*  
Selectable logging interval of 1-10s*  
Averaging (Leq or Lavg)  
Compliance with ANSI S1.4, IEC 61672, 60651
Compliance with ANSI S1.43, IEC 60804  
* requires dB24 software to access data stored on CEL-246 model



Selectable Ranges

30-100 or 60-130 dB

Noise Floor

< 33 dB (A)

Time Weightings

Fast, Slow and Impulse

Frequency Weightings

A and C


245g including batteries


72 x 212 x 31 mm


3x AA Alkaline or rechargeable

Battery Life

Greater than 35 hours

External Power

5V via USB 2.0 'Mini B' socket

Tripod Mount

1/4" Whitworth socket

AC output

0.85V RMS @ FSD 'A' weighted (Optional 0 - 1.3V DC instead of AC can be specified when ordering)

Operating conditions

  • Relative Humidity: 5 to 90% (non condensing)
  • Temperature: 0 to 40 °C
  • Atmospheric Pressure: 65 to 108 kPa