
7
Maintenance
6924-en_V1.3_09/20
87
Checking aerosol sensor zero point
To check the zero point, a special filter (HEPA filter) that holds back all parti-
cles from the air is placed on the aerosol inlet tube of the aerosol sensor.
The graphs
raw data distribution
and
time distribution
in the
calibration menu may not show any signals for several seconds. If signals
are shown, the aerosol sensor optical glasses may be polluted. If this is the
case, clean them.
1.
Use a hose to connect the HEPA filter to the aerosol inlet tube of the
aerosol sensor.
2.
Touch
sensor calibration
.
ð
The calibration menu containing two graphs opens:
raw data distribution
time distribution
ð
When no signals are shown in the graphs for several seconds, the
aerosol sensor is ready for use.
3.
Remove the HEPA filter.
Firmware
Mas-Q-Check
: Calibration menu with graphs containing no signals