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Home > Safety Products > Sound Meters > Casella Digital Sound Level Meter Kits

Casella Digital Sound Level Meter Kits

Provides precision accuracy measurements at the low cost of traditional analog instruments

Simple 2 button operation
Wide range from 30 to 130dB
A or C frequency weighting
Slow, Fast and Impulse time weightings
Current, highest and average noise level shown in display
Time history trend graphically displayed
USB output port to for simple data logging with pc or download of stored data
Auto calibration at selected decibel level
Scrolling sound level display
¼ inch threaded socket for tripod mounting applications
Model CEL-242 (50537-01)
Offers simple data logging of noise level readings for download to a computer
Model CEL-244 (50537-02)
Adds the time averaging functions for Leq and Lavg for OSHA measurements
Model CEL-246 (50537-03)
Features enhanced averaging version with simple data logging memory
Applications
Industrial hygiene measurements of noise in the workplace
Machinery noise surveys
Assessing hearing protectors using the NRR method
Transportation noise measurements
Building acoustic monitoring

Most sound meters incorporate a processing network that assigns relative importance to low-, middle-, and high-frequency signals. By comparing differently weighted measurements, you can isolate the source of problem sounds.
"A" Weighting attenuates the lower frequencies to approximate the response of the human ear, which is most sensitive to frequencies between 3000 and 4000 Hz.
"B" Weighting gives decibel readings of combined high- and middle-frequency signals. Use in conjunction with A weighting to isolate sounds that are causing a problem.
"C" Weighting reads all frequencies the same but gives a better response to higher frequencies than A or B weighting. Use to pinpoint problems when A or B weighted scale readings are very high.The CEL-240 series is a completely new range of sound level meters that combine the power of Digital Signal Processing (DSP) technology and simplicity and low cost of a traditional analog instrument. The meter has a low and high measurement range that covers a full 70dB on each setting and include A and C frequency scales and slow, fast and impulse time responses. A non-decaying maximum hold feature on every display captures and displays the highest sound pressure level of any noise until reset by the user. The optional software package is ideal for datalogging in spreadsheet format file for analyzing measurement data further.