CESVA DC112 - Beginning a Measurement; Function Display

DC112d/DC112
User’s manual
17
2.3.2 Beginning a measurement
First of all, ensure that the sound level meter has no measuring process in progress ( ). If it
has (
or ), press to stop it.
Next, set the DC112d/DC112 to dosimeter mode and choose the screen you want to display
(numerical, numerical with projected values, spectrum analyser or time history), with the
key.
Once you have selected your screen, press
to start the measurement process.
2.3.3 Function display
The DC112d/DC112 measures all functions simultaneously.
Described below are the different ways of displaying the acoustic functions for the
assessment of noise in the workplace while measurement is taking place. If you change the
kind of display (screen) or the octave band selected (spectrum analyser screen),
measurement will continue uninterrupted.
Numerical screen
This screen shows, in real time, the following information:
• Daily noise exposure level (L
EX,8h
) with frequency weighting A.
• Sound Exposure (E).
• Noise dose (DOSE).
• Equivalent continuous sound pressure level with A and C frequency weightings
corresponding to the measurement time (L
At
and L
Ct
).
• Peak sound pressure level with C frequency weighting corresponding to the measurement
time (L
Cpeak
).
• Criterion level (L
C
)
• Measurement time (t).
By pressing
the projected parameters are displayed.
The projected parameters determine the sound exposure if the level measured remains
constant during the projection time.
The projected parameters allow the evaluation of the sound exposure for measurement times
shorter than the set projection time t
p
.