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Configure Gas Chromatograph parameters
Section 5: Calibrate and configure the meter
3410 Series Gas Ultrasonic Meters Operations Manual
January 2018
3-9000-777 Rev E
5.11
Configure Gas Chromatograph parameters
Use the
Meter|Field Setup Wizard
menu and enable the
View Gas Chromatograph setup
checkbox. Configure the following parameters to setup a serial port as a Modbus master for
polling a GC.
•
Serial Port - Select which serial port will be connected to the GC. While the port is
configured for communications to a GC, it will not act as a Modbus slave device for
communications from Daniel MeterLink or a SCADA system.
•
GC protocol - Select the protocol for which the GC is configured. The Daniel Gas Ultrasonic
meter uses 7 data bits, Even parity, and 1 stop bit for ASCII Modbus and 8 data bits, No
parity, and 1 stop bit for RTU Modbus.
•
GC baud rate - Select the baud rate for which the GC is configured.
•
GC comms address - Enter the Modbus ID of the GC.
•
GC stream number - Enter the stream number for the gas composition the Daniel Gas
Ultrasonic meter will read.
•
GC heating value units - Select the units for which the heating value is configured in the
GC.
–
Btu/ft3
–
kJ/m3
–
kJ/dm3
–
MJ/m3
–
kCal/m3
–
kWh/m3
•
GC heating value type - Select the type of heating value the GC will return.
–
Btu-Dry
–
Btu-Saturated
–
Btu-Actual
•
Gas composition on GC alarm - Select which gas composition the Daniel Gas Ultrasonic
meter will use if the GC goes into alarm.
–
Fixed - if selected, the meter will start using the fixed gas composition stored in the
meter
–
Last Good Value - if selected, the meter will use the last gas composition collected
from the GC before the GC started to report alarms.
