87
The operator may inspect the message list at any time, using the RESET/ACKNOWLEDGE
menu. As the operator goes through the list, if a message is marked with '
≡
' characters, this
indicates a new warning that the operator had not previously acknowledged. At the end of the
list the operator is asked to acknowledge the warnings with 'QUIT (YES)' prompt. If the
operator selects YES by pressing the
↵
key, the system will attempt to remove the warnings
from the list. If the source of a problem is still present (say mass flow is too high for example)
the warning can not be removed from the list. When the operator returns to the measurement
mode the display will have stopped flashing showing that all the problems detected so far have
been acknowledged. However, the status arrow will only be extinguished if there are no longer
any messages present in the list. It is also possible to indicate in the main display if so desired
(see section 6.12).
In summary
The display flashes if the meter has detected problems that have not been acknowledged by
the operator.
The status arrow is shown until all warnings have been acknowledged and cleared.
–
The warning message shown in the display, if cause is still present.
–
A warning is contained in the message list if :
The cause of the problem is still present.
The cause of the problem is no longer present, but the warning has not yet been
acknowledged.
–
A message shows three bars "
≡
" as long as it has not been acknowledged.
A complete list of warning messages and their causes are given on the following page.
