CASELLA CEL CEL-450 - Page 64

Total linear A-weighted measurement range:
25 to 140dB.
Frequency Response:
6 Hz to 30 kHz (upper and lower 3 dB frequencies)
with Digital sampling rate: 67.2 kHz.
Time Weightings:
S, F and I according to IEC 61672-1, with only one selected at a
time.
RMA Frequency Weightings:
A, C and Z satisfying IEC 61672-1 2002 Class 1.
Filter weightings are derived simultaneously via DSP.
Correction Filters:
Built in correction filters for Random Incidence microphones.
Reference Microphones:
20
o
C Air temperature,
101.325 kPa Atmospheric pressure,
65% Relative humidity,
114.0 dB Nominal reference level.
Operating Environmental Conditions:
Temperature range (Class 1): -10 to +50
o
C,
Temperature range (Class 2): 0 to +40
o
C,
Humidity: 5 to 90% RH in the absence of condensation.
Atmospheric pressure: 65 to 108 kPa.
Storage Environmental Conditions:
Temperature range: -25 to +60
o
C,
Humidity: 0 to 90% RH in the absence of condensation.
Atmospheric pressure: 65 to 108 kPa.
Page 64 - CEL-450/490 Operators Handbook
Specification