Casella CEL CEL24X User Manual
Page 18
Battery Life
Typically 35 hours.
Power Consumption
~65mA.
ELECTROMAGNETIC COM PATIBILITY
Instrumentation is designed and tested to comply with the following EMC and ESD
Standards:
IEC 61000-4-2
Testing and Measuring Techniques - Electrostatic
discharge immunity tests.
IEC 61000-4-3
Electrom agnetic compatibility (EMC) - Radiated
electromagnetic field tests.
IEC 61000-4-6
Electrom agnetic compatibility (EMC) - Immunity to
conducted disturbances induced by radio frequency
fields. Tested at 10V/m or greater.
EFFECTS OF AC POWER
FREQUENCY FIELDS
Less than ±0.5dB change in 74dB(A) 925Hz reference
level when subjected to 80A/m AC magnetic field at 50
and 60Hz.
DISPLAY
Resolution 128x128 Mono Graphics LCD.
Update Rate
0.5 seconds update rate.
CONNECTIVITY
USB
USB 2.0 via ‘mini B’ socket. For SPL output (software
required) weighted as per selected frequency and time
weightings.
AUX Socket (2.5mm stereo)
AC output provided for DAT tape / PC wav file recording
or headphone applications. Approx 0.5V RMS Full Scale
Deflection (FSD) ‘A’ weighted output on selected range.
Minimum load impedance 22kΩ. (Optional DC Output via
internal configuration, 0 to 3.3V DC for FSD on selected
range. Output corresponds to selected weighting, 2kΩ
Output impedance).
AC input used for electrical calibration, switched on via
configuration menu.
DATA STORAGE (CEL-242 & CEL-246 Models only)
Memory Size
419,000 Data Points.
Number of Measurements 100.
Maximum Data Points Per
Measurement
65,515.
File Storage Format
.CSV file compatible with MS Excel.
Parameters Stored
CEL-242: 1s sound pressure levels.
CEL-246: 1-10s average value, either Leq or Lavg
dependent on settings.
18