9
The displayed function have the following meanings:
(1)
Instantaneous of sound pressure level
Press the SPL Key, start measure acoustic pressure.
Measuring range : 70-140dBA
If measure value is below 68.0dBA the display
will show - - - - dBA. (no value)
(2)
Noise exposure measured in a period
Press the DOSE key then press the START key to start
measuring accumulated noise exposure. The display will show
the %DOSE and annunciators. If you want to read the
accumulated running time, press the TIME Key and the display
will show the TIME annunciator. The colon will blink and
display hours and minutes. You can switch between DOSE
mode and run time mode at anytime.
If you want to stop measuring accumulated noise exposure,
press the STOP key and hold for 3 seconds and the
annunciator will also vanish.
Note: When the START key is pressed, the previously
measured data of DOSE and run time will be cleared.
(3)
Pause / Continue
When the STOP key is pressed, the measuring of noise
exposure will be interrupted in amid way and the
measurement data is held and the display show the
PAUSE annunciator. If the START key is pressed, the
measurement will be resumed from that point, the
PAUSE annunciator will vanish on the display.
In pause mode, measurement of instantaneous sound
pressure level mode can still operate.
When the instrument is to be out of use. Please, press the
key and hold until the display counts down from - - - 3 to - - - 0
and then blanks, power down procedures.
