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Reference, Installation, and Operations Manual Section 6: Meter operation
3-9000-743 Rev S June 2013
Audit log 239
6.6.3 Audit 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 Tab le 6- 20 below. The points are
grouped and, within each group, are listed alphabetically.
The groupings are as follows:
• AGA8
• Calibration
• Chord Proportions
• Data Logging
• Expansion Correction
• Flow Profile Correction
• Frequency, Digital and Analog Signals
• GC Interface
• General
• Indicators
• Meter Information
• Optional Features
• Pressure and Temperature
• Signal Processing
• Tracking
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