Fisher-Rosemount 3095FT, Manual

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Rosemount Model 3095FT HART Flow Transmitter
4-16
The Model 3095FT calculates the gas compressibility factor using
either gross or detail characterization methods. Gross characterization
is a simplified method that is acceptable for a narrow range of pressure,
temperature, and gas composition. Detail characterization covers all
pressure, temperature, and gas composition ranges for which A.G.A.
computes compressibility factors.Table 4-1 identifies the acceptable
ranges for both of these characterization methods.
TABLE 4-1. Acceptable Ranges:
Gross vs. Detail Characterization Methods.
User
Interface
Abbreviation
Variable
Gross
Method
Detail
Method
Pressure 0–1200 psia
(1)
(1) The Model 3095FT sensor operating limits may limit the pressure and temperature
range.
0–20,000 psia
(1)
Temperature 32 to 130 °F
(1)
–200 to 400 °F
(1)
Specific Gravity 0.554–0.9 0.07–1.52
Heating Value 477–1200
BTU/SCF 0–1800
BTU/SCF
N2 Mole % Nitrogen 0–50.0 0–100
CO
2
Mole % Carbon Dioxide 0–30.0 0–100
H
2
S Mole % Hydrogen Sulfide 0–0.02 0–100
H2O Mole % Water 0–0.05 0–Dew Point
He Mole % Helium 0–0.2 0–3.0
C1 Mole % Methane 45.0–100 0–100
C2 Mole % Ethane 0–10.0 0–100
C3 Mole % Propane 0–4.0 0–12
iC4 Mole % i-Butane 0–1.0 0–6
(2)
(2) The summation of i-Butane and n-Butane cannot exceed 6 percent.
nC4 Mole % n-Butane 0–1.0 0–6
(2)
iC5 Mole % i-Pentane 0–0.3 0–4
(3)
(3) The summation of i-Pentane and n-Pentane cannot exceed 4 percent.
nC5 Mole % n-Pentane 0–0.3 0–4
(3)
C6 Mole % n-Hexane 0–0.2 0–Dew Point
C7 Mole % n-Heptane 0–0.2 0–Dew Point
C8 Mole % n-Octane 0–0.2 0–Dew Point
C9 Mole % n-Nonane 0–0.2 0–Dew Point
C10 Mole % n-Decane 0–0.2 0–Dew Point
O2 Mole % Oxygen 0 0–21.0
CO Mole % Carbon Monoxide 0–3.0 0–3.0
H2 Mole % Hydrogen 0–10.0 0–100
Argon Mole % Argon 0 0–1.0
NOTE
Reference conditions are 14.73 psia and 60 °F for Gross Method.