CASELLA CEL CEL-240 - Electromagnetic Compatibility; Data Storage

Battery Life Typically 35 hours.
Power C onsumption ~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 ‘m ini 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 22k Ω . (Optional DC Output via
internal
configuration, 0 to 3. 3 V DC for FSD on selected
range. Output corresponds to selected weighting, 2k Ω
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.
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