Casella 490.B2 Octave Band Sound Level Meter Kit

Casella 490.B2 Octave Band Sound Level Meter Kit Tweet

You may still order back-ordered items.
This product is expected to ship after 02/28/2012.

Casella 490.B2 Octave Band Sound Meter identifies whether the noise level could have a detrimental effect

Item #: Q412-0490
Manufacturer: Casella USA
Manufacturer Item #: CEL-490.B2/K1
Product Type: Octave Band Sound Level

Your Price $4,494.95

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Features & Applications:

The Casella 490.B2 Octave Band Sound Level Meter Kit is the ultimate instrument for long term community noise measurements where wide changes in levels are expected to occur. Previous generations of noise meters require the user to make a decision on the likely noise levels to be expected during the measurement. Select too high a range and the low background levels will be missed. Choose to low a range and the important peak levels will cause overloads and consequent errors. The single 140 dB range available in the CEL-490 enable worry free measurements over the whole audio range without changing range. A wide range and all the frequency information collected simultaneously with the power of DSP filters.

The Casella 490.B2 Octave Band Sound Level Meter Kit comes into its own for difficult noise applications when rapid data recording is required. Spectral data capture as fast as 10 millisec per octave or third octave band spectrum ensures that even the most difficult transient sounds will be measured correctly with no loss of acoustic data integrity.

Kit Includes:

Real time octave band ANSI type 2 meter
CEL-110/2 acoustic calibrator
CEL-4672 foam windscreen
CEL-6722 attache style kit case
C6724 pc download cable
CEL-6813 dB23 pc software
4 x AA batteries for meter, 1 x 9V battery for calibrator and operator manuals

Features:

Single ultra wide 140 dB dynamic range
A, C & Z plus whole octave or third octaves depending on model variant
Full data logging as standard
Over 800,000 data point nonvolatile memory
Cumulative results for the whole of the run
Regular periodic results at user specified intervals
Time history profiles for built-in graphic level recording
Storage intervals up to 100 spectra per second for rapid data capture of transients
Slow, Fast & Impulse rms. responses plus Peak
Simple menu operation using keypad and icon controls
Menus in English, French, German, Italian and Spanish
Includes Certificate of Conformance

Applications:

Long term noise surveys
Reverberation time measurements
All types of general noise measurements
Frequency analysis of transient noise impulses
Workplace noise surveys
Transportation noise studies
ANSI/IEC type 1 & 2 models

Spec Summary:

Octave and third octave band measured parameters:	Instantaneous level Lxy, maximum level Lxymx, minimum level Lxymn, average level Lxeq, peak level Lxpk, 5 user selectable LN% values
Acoustic accuracy:	ANSI S1.4 (R1997) type 2, IEC 61672:2002, IEC 60651 : 1994, IEC 60804 : 2000, IEC 61260 : Class 0
Frequency response (Hz):	6.3 Hz to 30 kHz for -3 dB down points
Octave band center frequencies:	11 simultaneous bands with center frequencies 16 Hz to 16 kHz
Third octave band frequencies:	33 simultaneous bands with center frequencies 12.5 Hz to 20 kHz
Time weightings (response):	Slow, Fast and Impulse for rms.
Peak frequency weighting:	'A', 'C' or 'Z' separate from rms. weighting
Dynamic range for calculations:	140 dB
Noise floor (dB):	16.5 'A' weighted, 19.7 'C' weighted, 23.4 'Z' weighted
Maximum noise level (dB):	140 dB rms., 143 dB peak (with standard 50 mV/Pa CEL-250 mic)
Resolution (dB):	0.1 dB across whole range
DSP sampling rate (Hz):	67,200 Hz sampling with true rms. values calculated digitally
Histogram classwidth (dB):	143 x cells at 1 dB steps for full 140 dB range plus over-range and under-range cells (user selectable for broadband measurements)
Memory storage capability:	2 Mbytes (over 800,000 data points) 25,000 full octave spectra
Sampling intervals, in periods up to 14 parameters (user selected):	19 times from 10, 20, 50, 100, 250, 500 msec 1, 5, 10, 15, 20, 30 sec 1, 5, 10, 15, 20, 30, 60 min
Sampling intervals, up to 4 time history profiles (user selected):	18 times from 10, 20, 50, 100, 250, 500 msec 1, 5, 10, 15, 20, 30 sec 1, 5, 10, 15, 20, 30 min (profile interval time must be ¡Ü period times)
Fixed duration for measurement:	12 durations from 1, 5, 10, 15, 20, 30 min 1, 2, 4, 8, 12, 24 hour
Delayed start and stop for runs:	Up to 7 pairs of delayed timers can be set up to 30 days in advance
Calibration method:	Manual or automatic set to user entered dB level, last 4 calibration details saved for review and verification of stability
Configurations saved in memory:	1 factory default plus 4 user setups saved per bandwidth
Analog outputs:	AC signal 0.5 V rms. at 94 or 114 dB FSD (plus optional log DC output 0 to 2 V for 0 to 140 dB at 14.28 mV/dB)
Digital output:	Download or remote control of operations of meter via dB23 software
Baud rate for digital transfer:	8 settings from 9600 to 115200 baud
Screen languages:	English, French, German, Italian, Spanish menu selectable
LCD screen display:	128 x 64 pixel monochrome backlit display with icon indicators
Size:	13.4 x 4 x 1.5 in (340 x 100 x 40 mm)
Weight:	19.3 oz (550 gm)
Tripod socket:	Standard camera thread (1/4 inch)
Internal power supply:	4 off AA alkaline cells (15 hours typical max battery life for broadband, 12 hours typical for narrow band measurements)
External power supply:	12 V dc at 150 mA nominal via 2.1 mm power connector