Table 5-1: API tables, process fluids, measurement units, and default reference values (continued)
Process fluid
API tables
(calculations)
(1)
Referred density
(API): unit and
range
Default
reference
temp
Default
reference
pressure API standard
Referred
density
(2)
CTL or
CTPL
(3)
(4)
23A 24A Unit: SGU
Range: 0.6110 to
1.0760 SGU
60 °F 0 psi (g)
53A 54A Unit: kg/m
3
Range: 610 to
1075 kg/m³
15 °C 0 kPa (g)
Generalized
products (gasoline,
jet fuel, aviation fuel,
kerosene, heating
oils, fuel oils, diesel,
gas oil)
5B 6B Unit: °API
Range: 0 to 85 °API
60 °F 0 psi (g) API MPMS 11.1
23B 24B Unit: SGU
Range: 0.6535 to
1.0760 SGU
60 °F 0 psi (g)
53B 54B Unit: kg/m
3
Range: 653 to
1075 kg/m³
15 °C 0 kPa (g)
Liquids with a
constant density
base or known
thermal expansion
coefficient
(5)
N/A 6C Unit: °API 60 °F 0 psi (g) API MPMS 11.1
N/A 24C Unit: SGU 60 °F 0 psi (g)
N/A 54C Unit: kg/m³ 15 °C 0 kPa (g)
Lubricating oils 5D 6D Unit: °API
Range: −10 to
+40 °API
60 °F 0 psi (g) API MPMS 11.1
23D 24D Unit: SGU
Range: 0.8520 to
1.1640 SGU
60 °F 0 psi (g)
53D 54D Unit: kg/m³
Range: 825 to
1164 kg/m³
15 °C 0 kPa (g)
NGL (natural gas
liquids) and LPG
(liquid petroleum
gas)
23E 24E Unit: SGU 60 °F 0 psi (g) API MPMS 11.2.4
53E 54E Unit: kg/m³ 15 °C 0 psi (g)
59E 60E Unit: kg/m³ 20 °C 0 psi (g)
(1) Each API table represents a specialized equation defined by the American Petroleum Institute for a specific combination
of process fluid, line conditions, and output.
(2) Referred density is calculated from line density. You must specify this table, either directly or by selecting the process
fluid and base density measurement unit.
(3) You do not need to specify this table. It is invoked automatically as a result of the previous table selection.
(4) CTL or CTPL is calculated from the result of the referred density calculation. A, B, C, and D tables calculate CTPL, which
is a correction factor based on both line pressure and line temperature. E tables calculate CTL, which is a correction
factor based on line temperature and pressure at saturation conditions (bubble point or saturation vapor pressure).
(5) The Thermal Expansion Coefficient (TEC) replaces the referred density calculation. Use the CTL/CTPL table instead.
Configuration and Use Manual Configure process measurement applications
MMI-20048166 April 2019
Configuration and Use Manual 55
To Next Page
Loading...
