Sutron Corporation X-Link Operations & Maintenance Manual, Rev 1.63 5/24/2016 pg. 65
6.1.1.
Alarm Settings
6.1.1.1.
Alarm 1, Alarm 2, and Alarm 3
Each of these settings can have one of the following values
Off
Hi
Low
ROC
These settings are used to determine what kind of computation is made when
checking a sensor for alarms. Read on for a complete explanation.
6.1.1.2.
Threshold 1, Threshold 2, and Threshold 3
The threshold is a value that is compared to the sensor reading in order to
determine whether to go into or out of alarms.
6.1.1.3.
Deadband
The
Deadband,
along with the
Threshold
value is used to compute whether the
measurement will go
out of
alarms
.
6.1.1.4.
Alarm Tx Mode
Alarm Tx Mode
determines whether transmissions are made when the station
goes (into alarm) or (when it goes into
and
out of alarm).
If the
Alarm Tx Mode
is
Tx In
, the station will only make a transmission when
it goes into alarm.
If the
Alarm Tx Mode
is
Tx In And Out
, the station will make a transmission
when it goes into alarm and it will make another transmission when it goes
out of alarm.
ROC alarms setup for
Since Last Tx
do not generate out of alarm events or
transmissions.
6.1.1.5.
Alarm Logging
If Alarm Logging is set to Every Measurement, the system logs on the
Measurement Interval.
If Alarm Logging is set to Use Logging Interval, the system logs on the Logging
Interval.
This setting is only relevant if the customer setup the
Measurement Interval
to
be more frequent than the
Logging Interval
. In that case, the system can be
configured to log more frequently when it is in alarm.
Here is an example of a system setup to log more frequently while in alarms. The
system is set up to read the temperature sensor every two minutes and check
for alarms. If the temperature exceeds 20 degrees, the system will go into alarm.
