
Chapter 4 ________________________________________________________________ Operation
VAISALA _______________________________________________________________________ 71
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 92 for a description of the other
menu options.
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 a freely configurable low and high limit. 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.
An alarm is activated when the selected quantity goes higher than the
high limit, or lower than the low limit, much in the same way as the
relays. When an alarm is activated, an alarm note is displayed on the
display, and the lights of the display will blink.
0802-041
Figure 46 Display Alarm Active
Multiple alarms can be active at the same time; the alarm that was
triggered first will be shown on the display. The next active alarm is
revealed when the currently shown alarm is acknowledged by pressing
the OK button.
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