PureAire Monitoring Systems, Inc.
25
This is the menu at which to adjust the fault alarm relay state on the Air Check
O
2
Monitor.
To change this value, push the joystick right to display the relay state. The display will
Indicate
INVERT.
Pushing the joystick down will change the relay state from INVERT
to NORMAL. Press
ENTER
to accept the value.
After entering the relay state, the display will default back to the Set Formats menu.
The display will scroll the following:
5.5.3 Set Alarm Threshold Polarity
(Only available on O
2
monitor with Relays)
Alarm Threshold Polarity determines if an alarm concentration is set above or below a
threshold value. For example, if an alarm of 19.0% for Oxygen is selected, the Alarm
Threshold Polarity must be set to
Invert
for the monitors alarm to activate when the
reading goes below 19.0%. For toxic and corrosive gases selecting a
Normal
setting
for the Alarm Threshold Polarity means that the system will alarm when the gas
concentration exceeds, goes above, an alarm set point. This menu will permit the
selection of the alarm polarity. To access this menu from the “Set Formats” menu, push
the joystick down to display the
Set Alarm Threshold Polarity
adjustment menu. This
will scroll on the digital display.
Push the joystick right to access the first sub menu;
Set Alarm 1 Polarity
will
scroll on the display. This is the menu at which to adjust the first level alarm polarity
state on the Air Check O
2
Monitor.
To change this value, push the joystick right to display the relay state. The display will
Indicate
INVERT.
Pushing the joystick down will change the relay state from INVERT
to NORMAL. Press
ENTER
to accept the value.
..Set Formats...
20.9
INVERT
20.9%
NORMAL
20.9%
..Set Alarm Threshold Polarity.
.
20.9%
..Set Alarm 1 Polarity...
20.9%
NOTE:
The
menus
highlighted in
light gray are
only used for
O2 monitors
with the Alarm
Relay Board
They are
displayed on
the O
2
monitor
and their
function is
disabled.
