MAWS HydroMet™ Systems for Meteorological and Hydrological ...

Chapter 3 __________________________________________________________________ Software
An Example of a Configuration Template for a Tabular Message
Alarms
The alarms function is also a completely user configurable feature.
Any measured or calculated parameter can be used for testing the user
set alarm criteria.
Example: It is possible to combine several alarm criteria (AND or OR
- type functions) e.g. to create an alarm when the wind direction is
more than 275 degrees and wind speed exceeds 20 m/s.
Whenever an alarm condition has been detected, a user configured
alarm message will be automatically sent to the specified
communication port(s). Alternatively, triggering an alarm can cause
logging of a user defined data group or set an excitation voltage e.g.
for controlling a relay. The system supports multiple alarm functions.
There are several alternative triggering functions for alarms such as
below minimum, above maximum or a combination of these limits.
In addition, the Alarm module can be used to dynamically adjust the
timer functions, such as the report transmission interval or measuring
intervals. For a more detailed description, see the Dynamically
Controlled Timer Functions section.
VAISALA ________________________________________________________________________ 35