Reference, Installation, and Operations Manual

Section 6: Meter operation

3-9000-743 Rev S

June 2013

 

 

 

6.6.3Audit log

The Mark III meter stores an audit log record whenever any parameter affecting the gas flow measurement is modified. The audit log record indicates which data point changed, the date and time of the change, and both the ‘as-found’ and ‘as-left’ values.

The meter can store up to 3000 audit records. The user can select whether old, unread records can be overwritten by new records when the log becomes full via the data point DoOverwriteUnreadAuditLog. This point can be modified using the Daniel MeterLink Tools - Edit/Compare Configuration screen. The default is to overwrite old, unread records. Refer to Section 6.6.6 for information on reading records and marking records as read. The data point IsAuditLogFull indicates whether or not the audit log is full and cannot overwrite old, unread records.

The data points monitored for the audit log are as shown in Table 6-20below. The points are grouped and, within each group, are listed alphabetically.

The groupings are as follows:AGA8CalibrationChord ProportionsData LoggingExpansion CorrectionFlow Profile CorrectionFrequency, Digital and Analog SignalsGC InterfaceGeneralIndicatorsMeter InformationOptional FeaturesPressure and TemperatureSignal ProcessingTracking

For information on a particular data point, consult Daniel MeterLink online help. (There is a help topic for each data point. From Daniel MeterLink, click on Help, click on Mark III Registers

Audit log

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