CEL-240
Digital Sound Level Meter
KEY FEATURES:
§  Simple operation
§  Rugged design
§  High resolution display
§  Latest digital technology
§  Fully compliant with IEC 61672
§  Large measurement range
§  Maximum hold function
§  Automatic calibration
§  Greater than 35 hours battery life
§  2 year warranty
§  USB output to PC
Features
The CEL-240 has a simple user interface using two “softkeys”, which represent options at
the bottom of the screen, making the instrument very easy to use. Sound pressure and
maximum sound pressure are simultaneously displayed in either a numerical bargraph or
unique graphical time-history display (shown right).
dB24 Software
This optional software allows the instruments’ USB output to be logged and stored on a
PC in real-time. Sound pressure levels are stored by dB24 every second into a data file
compatible with PC based spreadsheet applications. dB24 offers a simple and affordable
way of logging the time-history of noise levels  over a desired period of time.
Technical Specification
Applicable standards:	IEC 61672: 2002 Class 2 IEC 60651 : Type 2 (1979) ANSI S1.4 : Type 2 (1983)
Measurement range:	30 – 130 dB RMS
Selectable ranges:	30 – 100 or 60 – 130 dB
Noise floor:	< 33 dB (A)
Time weightings:	Fast, Slow and Impulse
Frequency weightings:	A and C
Weight:	245 g including batteries
Dimensions:	72 x 212 x 31 mm
Batteries:	3 x 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:	0.85 V RMS @ FSD ‘A’ weighted
DC output:	0-1.3 V (Optional)
Operating conditions:	Relative humidity of 5 to 90% (non condensing) Temperature 0 to 40°C (Class 2) Atmospheric pressure of 65 to 108 kPa