PureAire Monitoring Systems, Inc.
10
2.6 CO
2
System Default Factory settings
The
CO
2
Monitor is shipped with factory defaults for the alarm relay settings. The following are the
factory defaults:
Menu Function Factory Default
Menu Defined
Set 4-20mA loop
The mA output is set at the
factory using a calibrated
Fluke meter.
Use this function to adjust the
monitor’s 4mA, (Zero) and
20mA, (Span) to your PLC or
distributive control system.
Set Formats
LED and alarm relay
State **
Alarm 1 = Normal
Alarm 2 = Normal
Fault = Normal
Do you want the relays to
energize, (normal) or de-
energize, (fail safe) when the
alarm activates?
Set Alarm Threshold
Polarity
Alarm 1 = Normal
Alarm 2 = Normal
Audio = Not Available
Do you want to alarm at a level
higher, (normal) or lower,
(inverted) than the alarm
threshold?
Set Latching
Alarm 1 = Non-latching
Alarm 2 = Non-latching
Audio = Non-latching
Do you want the alarm to
automatically reset? (non-
latching) or do you want to
manually reset the alarm?
(latching)
Alarm Delay
Alarm = 5 seconds
Displayed as 05
How long do you want to wait
until the alarms activate?
Zero Suppression
0.0%
This function is Not Enabled
on the CO
2
monitor.
Set Alarm
Thresholds
Alarm 1 = 5,000ppm
Alarm 2 = 10,000ppm
At what level do you want to
alarm?
Set Alarm Hysteresis
Alarm 1 = 00 PPM
Alarm 2 = 00 PPM
For use when using the CO
2
monitor for control of valves and
process.
Sensor Adjustment
Set CO
2
Sensor span
CO
2
set to autocal on
CO
2
set to autocal off
Calibrate CO2 to 400ppm
For use when manually gas
calibrating the CO
2
monitor.
See Section 6.2
Manage Passwords
Factory default is
557
For use when changing the
password from factory default to
a new password of your choice.
NOTE
:
The built in relay settings may be changed by the user in the field. Refer to
Section 5.5.2
** NOTE:
The LED indicators on the front panel are connected directly to the alarm
relays.
