CiDRA SONARtrac PW VF-100 - Manual (Page 158)

20834-01 Rev 04 Page 8-14
8.3.3.2 Critical
Critical indicates an alarm condition in which the output of the meter
can no longer be considered valid. This is indicated by the red alarm
LED on the transmitter being constantly on and constant relay closure
output to the DCS.
The measurement result should be discarded and closed loop controls
switched to manual during a critical alarm.
The alarm can be cancelled either manually or will clear automatically
when the alarm condition is no longer present depending on the menu
option selected (see below).
8.3.3.3 Manual Clear
The Manual Clear
function under ‘Alarm Control’ has options of
‘Disable’ and ‘Enable’. In the ‘Disable’ mode the alarm will
automatically clear when the alarm condition no longer exists. In the
‘Enable’ mode, the alarm must be reset manually by opening the front
door of the transmitter and pressing the ‘Exit’ button.