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Reference, Installation, and Operations Manual Section 6: Meter operation
3-9000-743 Rev S June 2013
Log record access 227
6.4.2 Log record access
Due to the Mark III meter’s enhanced log retrieval methods, accessing log records via Modbus
communication is not supported. All log records (daily, hourly, audit, alarm, and system) are
accessible via Daniel MeterLink (see Section 6.6) when the optional Log Access feature is
enabled (see Section 4.1.4).
6.5 Optional gas chromatograph interface
The Daniel Mark III Ultrasonic Gas Flow Meter can optionally interface with any Daniel gas
chromatograph (GC) that supports the SIM2251 mode to read gas property data (such as for
AGA8, AGA10, energy rate, mass rate, and/or JuniorSonic™ profile correction calculations).
The following table lists the Gas Chromatograph SIM registers polled by the meter. Also refer to
Daniel Engineering Specification Part Number ES-17128-005 Rev. B.
Table 6-15 Gas Chromatograph Sim 2251 Registers
Sim 2251 Register Description
3034 Stream identifier
3041 Cycle time start - month (1-12)
3042 Cycle time start - day (1-31)
3043 Cycle time start - last two year digits
3044 Cycle time start - hour (0-23)
3045 Cycle time start - minutes (0-59)
3046 GC alarm bitmap 1
3047 GC alarm bitmap 2
3001 - 3016 Component codes
7001 - 7016 Mole fractions for corresponding component codes
7033 BTU (dry)
7034 BTU (sat)
7035 Specific gravity)
7038 Total unnormalized mole percent
7054 BTU (actual)
The gas chromatograph interface is an optional feature that requires both the Option Board
(for Serial Port C) and a valid GC feature key (see Section 4.1.5).