Casella Sound Level Meter Type 1 Kit with Standard Items

CEL-450-B1-K1 Sound Level Meter Type 1 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.