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236 Hourly log
Section 6: Meter operation Reference, Installation, and Operations Manual
June 2013 3-9000-743 Rev S
6.6.2 Hourly log
The Mark III meter stores an hourly log record once per hour on the hour. The meter can store up
to 2400 hourly records (100 days’ worth). The user can select whether old, unread records can
be overwritten by new records when the log becomes full via the data point DoOverwriteUn-
readHoulyLog. 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
IsHourlyLogFull indicates whether or not the hourly log is full and cannot overwrite old, unread
records.
The data points included in the hourly log and the corresponding log action are as shown in the
table below. Data points required by the API Chapter 21 standard are marked with an asterisk
(*). (Refer to Section 6.6 for information on the log action types.) 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 Reference, select the Index tab,
start typing the data point name until the desired point is highlighted, and then click the
Display button.)
Table 6-19 Hourly log content
Data Point Log Action
PosVolFlow*
Totalize and Snapshot
NegVolFlow*
Totalize and Snapshot
PosVolBase*
Totalize and Snapshot
NegVolBase*
Totalize and Snapshot
PosEnergy Tot alize
NegEnergy Tot alize
PosMass Tot alize
NegMass Tot alize
FlowTemperature*
Flow-Gated
FlowPressure*
Flow-Gated
AbsFlowPressure*
Flow-Gated
AccumFlowTime*
Tot alize
AvgSndVel*
Flow-Gated
CompAvgMeterSndVel Snapshot (the value is itself an hourly
average)
CompAvgAGA10SndVel Snapshot (the value is itself an hourly
average)