Fisher-Rosemount 3095FT, Manual

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Rosemount Model 3095FT HART Flow Transmitter
4-18
Configuration
Flow
Gas Properties (N2)
The displayed gas properties screen is determined by the calculation
method selected in the Flow Parameters screen. If “AGA8 Gr-CO2-N2”
is selected, then the Gross Characterization Method, Option 2, is
displayed (Figure 4-7a). This method requires the entry of real gas
specific gravity, CO2 mole percent, and N2 mole percent, and also
allows entry of H2 mole percent, CO mole percent, and heating value.
H2 and CO are typically zero for natural gas applications.
NOTE
This gross characterization method does not require heating value.
However, heating value is required if energy rates or totals are to be
logged or displayed on the LCD meter.
The valid ranges for the Gas Properties (N2) screen selections are:
Real gas relative density (specific gravity) at base conditions
0.554000–0.900000.
CO2 (carbon dioxide) mole percent
0–30 percent.
N2 (nitrogen) mole percent
0–50 percent.
H2 (hydrogen) mole percent
0–10 percent.
CO (carbon monoxide) mole percent
0–3 percent.
Volumetric Gross Dry Heating Value at base conditions
477–1200 BTU/SCF.
30
95-
309
50
003
FIGURE 4-7a. Gas Properties Screen
(AGA8 Gr-CO2-N2).