Vaisala HMT330 - Manual (Page 76)

User's Guide _______________________________________________________________________
74 ___________________________________________________________________ M210566EN-K
Factory Settings
Use the display/keypad to restore the factory settings. This operation
does not affect the adjustments. Only settings available in the menus are
restored.
1. Press any of the arrow buttons to open the Main Menu.
2. Select System
by pressing the ► arrow button.
3. Select Factory settings and press the REVERT button to confirm
your selection. Press the YES button to reset all settings to the
factory defaults.
See section General Settings on page 99 for a description of the other
menu options.
Configuring Display Alarms
The Display Alarm feature provides two independently configurable
alarms for transmitters with the display/keypad option. Each alarm tracks
a selected quantity, with freely configurable limit values. Each alarm also
has a configurable hysteresis value to prevent unnecessary triggering
when the measurement fluctuates around an alarm limit. The alarms can
be configured for any quantity supported by the transmitter. The
configuration of the Display Alarms can only be done using the
display/keypad option.
You can have the alarm activate inside or outside the specified range by
setting the limits correctly:
- To have the alarm activate when the measured quantity is outside the
specified range, set the Act. above limit higher than the Act. below
limit.
- To have the alarm activate when the measured quantity is inside the
range, set the Act. above limit lower than the Act. below limit.
The alarm limits are shown on the graph display as thicker dotted lines.
When a display alarm is activated, the automatic scaling of the graph
display always keeps the limits in view.