This sound level meter is ideal for most environmental noise measurement,
industrial noise surveys, and many other applications such as occupational
noise assessments.
It can also be switched into Octave or 1/3 Octave Band mode to
assess the frequency content of the noise.
The noise measurement process consists of:
Checking the meter's calibration. This is important for any
measurements that may be used for legal purposes.
Making the measurements, either broadband, octave or 1/3 octave
band mode.
Viewing the noise measurement results.
Presenting reports.
Checking the Calibration
Fit the calibrator onto the microphone as shown opposite.
Switch the Calibrator on.
Select Calibrate in the menu and press OK.
The meter will automatically check its calibration and make
any adjustments. If there are any major problems with the
meter or microphone capsule it will report an error.
The results of the calibration are stored and can be viewed
on the display or downloaded using the software provided.
Manual Noise Measurement
From the menu Select Broadband, Octave or 1:3
Octave mode.
Position the microphone.
Select a suitable measurement range using the key.
Press the key
to start the measurement.
In manual filtered mode, switch through the bands at
will.
To finish the measurement press the key.
The results of the measurement can be read from the display.
The measurement is automatically stored so that it can be
viewed again later or it can be downloaded to the software.
Making Automatic Timed Measurements
The Sound Level Meter can be set to make timed measurements.
Broadband - Timed and Repeating Measurements
Using the menu options, set the measurement time (e.g.
15 minutes).
Select the Repeat option to make multiple
noise measurements.
Press the key
to start the meter running.
The Sound Level Meter will now make repeating measurements,
automatically storing each one.
Octave and 1/3 Octave Timed Measurements
Using the menu options, set the measurement time (e.g.
5 minutes).
Press the key
to start the meter running.
The meter will automatically step through each of the octave
or 1/3 octave bands, covering the whole band in the time
selected.
Viewing the Noise Measurements
The noise measurements can be viewed on the meter's display
or you can connect the meter to a computer and download
them using the software and cable that are included.
The Deaf Defier software can store the results for further
analysis and present various noise reports. For more information
please visit the software web page.
Prices and Ordering
Order Code
Description
Price
Purchase
CR831C
Type 1 Sound Level Meter with 1/3 Octaves and Software
$4802.00
SC831C
CR831C Sound Level Meter, Calibrator and Software
$5411.00
CK831C
Noise Measurement Kit with CR831C, Calibrator, Software, Windshield and Case
key.
key
to start the measurement.
key.
