Placement and Calibration of Sensors
Particulates Calibration (Zero Cal)
EVM Series User Manual
48
Zero/HEPA filter
Used for particulate zero cal.
Zero filter with coupler and vent opening
Insert the Zero Filter via the coupler into the “2.5”
vent opening.
Turret
Turn the turret so “PM” appears on the display of
the EVM. The raised section will align with the
“impactor” text.
Figure 4-6: Particulate zero cal with HEPA filter
2.
Adjust the turret/impactor to
PM
(refer to “Turret” in Figure 4-6).
3.
From the
Start
screen, press
▲
/
▼
Arrows
until
Calibration
is selected and press
Enter
.
Calibration
– select to open to
the Calibration set screen
Figure 4-7: Selecting calibration screen
4.
In the
Calibration
screen, press
▲
/
▼
Arrows
and select
PM
(for particulate matter).
NOTE
: If the impactor setting is incorrect, the instrument will flash a warning sign indicating
that you need to turn the impactor to “PM” before proceeding.
