Yokogawa 415 Steam and Gas - Manual (Page 15)

General Gas
Gases: Handles most gases for which the critical
temperature, pressure and SG are known.
Compressibility: Calculated using Redlich-Kwong equation.
Display: Corrected Volume (m 3 or ft
3
).
Mass (kg or lbs).
Temperature Range: -273°C (-450°F) to 800°C (1472°F).
(RTD has a more limited range.)
Pressure Range: 0 kPa abs (0 psia) to 100,000 kPa (10,000
psia).
Natural Gas
Calculations: Uses NX-19 equation to calculate
supercompressibility Fpv.
Displays: Corrected Volume (m 3 or ft
3
).
Mass (kg or lbs).
Temperature Range: -40°C (-40°F) to 115°C (240°F).
Pressure Range: 101.325 kPa (14.69 psia) to 34,380 kPa (4985
psia).
SG Range: 0.554 to 1.000.
Carbon Dioxide: 0 to 15% mole.
Nitrogen: 0 to 15% mole.
Steam
Displays; Mass (kg or lbs)
Energy (MJ or BTU x 1000).
Calculations: Uses 1967 IFC Formulation equations to
calculate specific weight and enthalpy of
steam.
Steam Type: Saturated and Superheated.
Temperature Range: 20°C (68°F) to 800°C (1472°F).
(RTD has a more limited range.)
Pressure Range: 1 kPa (abs) (1 psia) to 100,000 kPa (10,000
psia).
Specification 13