Integrating Sound Level Meter / EN
19
08/15/16 Version No. 01
9. MEASUREMENT PROCEDURE
9-1 Sound level measurement
1. Press the
button to turn on the instrument. The initial state depends on the
condition the instrument was in before it was last turned off.
2. Press the “
”
button to select the desired frequency weighting. For normal
sound level measurements, select the “A” setting.
3. Press the “
”
button to select the desired time weighting (dynamic
characteristics). Normally, the “FAST” setting should be used.
4. When performing measurement according to IEC or other standards, the frequency
weighting and time weighting setting required by the standard should be selected.
5. Press the “
or
”
buttons to select desired level range. Choose a setting in
which the bar graph indication registers approximately the middle of the range. If the
“
OVER
” indicator appear during measurement, the upper limit of the selected
range has been exceeded. Increase the range setting until the symbol remains off
during measurement. Similarly, if the “
UNDER
” indicator appears, reduce the
range setting until the symbol remains off during measurement. Both indicators are
non-latching and will clear when the correct range is selected.
6. The numeric level indication shows the currently measured sound level. The
reading is updated once every second.
Press
button changed from current time “hour : minute : second” to current
date “year – month - day” displayed about 2 seconds.
7. Press the “
” button to record the maximum time-weighted sound level
encountered during a measurement period; the “MAX” indicator will blink appear on
the display. Press this button again to exit this mode.
9-2 Equivalent continuous sound level (Leq) measurement
Sound exposure level (SEL) measurement
Maximum sound level (SPL MAX) measurement
Minimum sound level (SPL MIN) measurement
Peak Hold sound level (PH) measurement
Percentile sound level (L05, L10, L50, L90 and L95) measurement
When using this meter in a mode other than sound level measurement, all
processing functions provided by the meter are carried out simultaneously. For
example, when equivalent continuous sound level measurement is selected, the
exposure level, and percentile level, are also determined.
