7NoiseMetersCEL24xSpecificationsStandards IEC61672-1 Class 2ANSI S1.4 Type 2CEL244/246: IEC60804 Type 2and ANSI S1.43 Type 2Range 30-100dB and 60-130dBFreq Wtg “A” and “C” weightingsNoise Floor Typically <33 dB(A)Time Wtg Fast, Slow and ImpulseOperating ConditionsHumidity 5 to 90% RH non-condensingTemp 0ºC - 40ºCPressure 65 to 108 kPaCalibration Auto calibration by 1kHz @ 114dB or94dB (e.g. CEL120/2)PowerExternal 5VDC (via USB mini B)Batteries 3 x AA Alkaline or NiMH rechargeableBattery Life Typically 35 hoursPower Approx 65mAConnectivityComputer USB 2.0 via mini B socket.AUX AC out, 0.5V RMS FSD. “A” weightedStorage (CEL242 and CEL246)Memory 419,000 data points100 measurements65515 points per measurement