Alarms and Events
The flow computer supports extensive alarming
capability to enhance operational efficiency and
improve the audit trail. Alarms are pre-allocated to
meter runs and stations for standard values such as
pressure, temperature, differential pressure, or
frequency as well as meter run and station flow rates.
In addition to these standard alarms, the FB2200
provides a number of user alarms that you can assign
to other database parameters simply by “filling in the
blanks” in user alarm templates in the FBxConnect
configuration tool. Storage is provided for the most
recent 1000 alarms in the alarm log.
The event log stores the significant events during
operation and can be configured to either store all
events in a single log of 2000 events or the user can
select to store the metrology/legal events in a separate
log from the operational events. With the latter option
the event log capacity is 1000 metrology events and
1000 operation events.
Automated Checksum Verification (ACV)
As an extended auditing feature, the flow computer
provides an option to perform online integrity checks
by generating firmware and configuration checksums.
The checksum is a 32-bit CRC number which is
routinely calculated and compared against the last
verified checksum. If a newly calculated checksum
does not match with the last verified checksum, the
system generates a checksum error and the flow
computer goes into an unverified state.
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