Ametek Thermox CEM O2/TM, Руководство пользователя

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Controller / User Interface | 4-29
Alarm Set Points
This menu option allows you to set your alarm limits. Whether these
limits represent high or low alarms is defined using the Alarm Configure
menu option, although certain restrictions apply (see the “Alarm Config-
ure” section. Also, if you select Hydrocarbon Upset as the Sensor Config.
option from the Setup Key menu, Alarm 4 is fixed as both a high alarm
and the alarm that triggers during a hydrocarbon upset condition.
If an alarm triggers, an up or down arrow will appear to the right of the
process reading on the display (depending on whether it is a high or low
alarm). For example, if the first display line is showing % O
2
values, and
a high alarm occurs, an up arrow will appear to the right of the O
2
value.
If, for example, you set Alarm 3 for a high O
2
alarm and Alarm 4 for a
high O
2
alarm, and the O
2
value exceeds both the Alarm 3 and Alarm 4 set
points, two up arrows will appear next to the O
2
value on the display.
Defining alarm set points
Do the following to define your alarm set points:
1. Select Alarm Set Points from the Alarm menu.
Once you select the Alarm Set Points menu option, the system alerts
you that Alarms 1 and 2 are reserved for the watchdog and service
alarms, and are not software selectable. Press the Enter Key to con-
tinue to the configurable alarms.
2. Select whether you want to enter the Alarm 3 set point using a percent
or PPM value (this option won’t appear if Alarm 3 is not set to activate
based on an O
2
reading, but rather is set to activate based on the start
of a calibration or verification.
3. You will be prompted to define the Alarm 3 set point value:
Alarm #3= xx
New Value?
4. Enter the Alarm 3 set point value, then press the Enter Key (just press
the Enter Key if you don’t want to change the current value).
NOTE
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