User guide

Chapter 3: Alarms

About Alarms

Users with Full Control, Configure Alarms, and Configure

Custom Threshold permissions can set alarm limits, and,

when conditions exceed these limits, alarms are triggered

which notify key staff of the condition. Staff with Acknowledge

Alarms permissions or higher then acknowledge alarms in

viewLinc.

All transactions are recorded in the Event Log and the

Historical database.

There are several types of alarms in viewLinc: threshold

alarms, communication alarms, event log validation alarms,

and logger sampling alarms. If you are using validatable

loggers, you may also receive logger validation alarms and

calibration alarms.

Using viewLinc, you can customize the alarm information that

is issued for threshold, communication and logger alarms by

configuring them from the System | Loggers tab.

Threshold Alarms

Threshold alarms notify users when conditions (such as

temperature and relative humidity) are outside acceptable

limits.

Threshold alarms are not enabled by default. To trigger

threshold alarms when certain thresholds are exceeded,

users with assigned permissions must configure them.

Communication Alarms

Communication alarms notify users when communication

between a host (Logger Host or viewLinc Server) and its data

loggers is down. This may be because viewLinc Server can

not communicate with the logger, or the data logger

connection to a host has been severed. Communication

alarms serve as a system health test, alerting you if there is a

problem that might disrupt viewLinc monitoring and alarming.