Setting up Parameters via the Keypad
Particulate Pump: Enable or Disable
EVM Series User Manual
30
Particulate Pump: Enable or Disable
You may want to disable the particulate pump for situations in which the environment is too dirty for the
particulate optical engine or if you want to keep the engine and pump clean and dry from oily mists,
liquids, or fogs elements. Additionally, you may want to log other parameters, such as CO
2
, Toxic,
and/or temperature and humidity parameters and exclude the particulate measurements from a log
session. This is changeable in the particulate screen.
Enable/Disable the pump
1.
From the
Start
screen, select the
Setup
menu by pressing
▲
/
▼
Arrows
and press
Enter
.
2.
Press
▲
/
▼
Arrows
repeatedly until
Particulate
is selected and press
Enter
. (The particulate
setup screen will appear.)
3.
To enable/disable the particulate setting/pump, ensure
Particulate
is selected and press
Enter
.
4.
Press
▲
/
▼
Arrows
to select either Enabled or Disabled and press
Enter
. (Refer to Figure 3-7
to view a sample screen.)
5.
Press
On/Off/Esc
twice to return to the start screen.
Resetting the Gravimetric Filter
The Gravimetric accumulators display the calculated accumulated mass of particles and the
accumulated volume through the gravimetric filter (since the last time these accumulators were reset).
At the same time, the particles are actually collected in the gravimetric cassette in the back of the unit.
Typically the gravimetric accumulators are reset when the gravimetric cassette is replaced by the user.
Resetting gravimetric filter
1. From the Start screen (see Figure 3-2 for details), select Setup by using
▲
/
▼
Arrows
. Press
Enter
.
2.
Press
▲
/
▼
Arrows
to select the Particulate screen and press
Enter
. (The particulate screen
will appear.)
3.
To reset the Gravimetric filter, select the Grav. Mass/Grav. Volume fields by pressing
▲
/
▼
Arrows. Once selected, the Reset soft key will appear. Press this soft key to reset.
Reset soft key
Visible when grav. mass
menu item is highlighted
Displays accumulated
particulate mass & volume
Figure 3-12: Particulate setup screen
