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Casella Sound Level Meter Type 2 Kit with Standard Items

Item #:
CEL-450-B2-K1
Brand:
Casella
Casella Sound Level Meter Type 2 Kit with Standard Items
$3,550.00
Qty

Discontinued

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Casella Sound Level Meter Type 2 Kit with Standard Items

Casella Sound Level Meter Type 2 Kit with Standard Items

$3,550.00

Discontinued


CEL-450-B2-K1 Sound Level Meter Type 2 Kit with Standard Items by Casella

The CEL-450 is a new concept in sound level meters offering the power of digital signal processing (DSP) technology in a small lightweight unit. The instrument provides all the features of a broadband meter while simultaneously offering the ability to measure noise levels in whole or third octave bands across a wide range of frequencies that cover the whole audible range. There are 6 models in the family covering the requirements of ANSI standards in the type 1 and type 2 categories. Broadband datalogging is provided as standard and dedicated pc download and control software completes the popular kits.

Key Benefits

  • Single 140dB ultra-wide dynamic range
  • Real time measurements in octaves from 16 Hz to 16 kHz
  • Real time measurements in third octaves from 12.5 Hz to 20 kHz
  • Simultaneous measurements of A, C and Z (linear) levels
  • Max, min, average, peak measurements
  • Q = 3, 4, 5 or 6 exchange rates available
  • Data logging intervals as fast as every 10 msec for broadband levels
  • 999 separate runs
  • Over 800,000 data points

Applications

  • simple noise surveys
  • industrial hygiene
  • measurements for OSHA compliance
  • machinery measurements
  • product noise reduction
  • transient event analysis
  • transmission loss
  • barrier investigations
  • selection of correct hearing protection devices

The major benefit of the CEL-450 is the ease with which it can make full range noise measurements in difficult situations such as those encountered with transient sources. These can include impacts, pass-by testing of vehicles, flyover tests for aircraft, shooting ranges and other similar difficult to measure noise sources. The ultra wide dynamic range of 140 dB means that it is not necessary to worry about selecting the right range as the meter is always on the right range. Noise parameters such as the max, min, average, peak etc. can be enabled or disabled depending upon the exact requirements of the task in hand. Data log the results from 10 msec to 30 minutes to collect time history of the level changes.

Operation and use

The new CEL-450 could not be any easier to use. It allows the operator to configure the measurements according to the most used settings and it will remember them in a non-volatile memory ready for the next time. Simply choose the appropriate frequency and time weightings and data-logging interval and save them in one of four User Setup stores. A factory default Setup comes as standard with the most often used settings already saved. Calibrate the input using an acoustic device and the meter is ready to go. Up to 999 separate measurements can be stored and recalled or downloaded to the included dB23 software. 11 full octaves or 33 third octave spectra can be captured in real time ensuring that none of the signal is missed compared to sound level meters with switching filters.
Broadband measured parameters Instantaneous level Lxy, maximum level Lxymx, minimum level Lxymn, average level Lxeq, exposure level LxE, peak level Lxpk, average level Lavg, TWA, LCeq-LAeq, LEP,D, takmaximal levels Ltm3 & Ltm5
Octave and third octave band measured parameters Instantaneous level Lxy, maximum level Lxymx, minimum level Lxymn, average level Lxeq, peak level Lxpk
Acoustic accuracy ANSI S1.4 (R1997) type 1 and type 2, IEC 61672:2002, IEC 60651: 1994, IEC 60804: 2000, IEC 61260: Class 0
Microphone details CEL-250 precision electret capsule for type 1 models, CEL-485 combined electret microphone and preamplifier for type 2 models
Broadband frequency weightings ‘A’, ‘C’ and ‘Z’ (linear, un-weighted, all-pass level)
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, up to 4 broadband time history profiles (user selected) 18 sampling times from 10, 20, 50, 100, 250, 500 msec 1, 5, 10, 15, 20, 30 sec 1, 5, 10, 15, 20, 30 min
Fixed duration for measurement 12 durations from 1, 5, 10, 15, 20, 30 min 1, 2, 4, 8, 12, 24 hour
Calibration method Manual or automatic set to user entered dB level, last 4 calibration details saved for review and verification of calibration stability
Configurations saved in memory 1 factory default plus 4 user setups saved per bandwidth (15 max)
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

Datasheets & User Manuals

Questions & Answers


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