Configure process measurement
Table 5-12
Standard concentration curves and associated measurement units
continued
Curve name
Description
Density unit
Temperature
unit
Concentration
unit
HFCS 90
Curve represents a hydrometer scale
for HFCS 90 (high fructose corn
syrup) solutions that indicates the
percent by mass of HFCS in solution.
g/cm3
°C
%
5.10.3
Derived variables and calculated process variables
When you configure the concentration measurement application, your choice of
Derived Variable
determines the process variables that will be calculated by the application.
Table 5-13 lists the options for
Derived Variable
, and the set of process variables that are calculated
for each option.
Table 5-13
Derived variables and calculated process variables
Calculated process variables
Derived Variable
Description
Density at
reference
tempera-
ture
Standard
volume
flow rate
Specific
gravity
Concen-
tration
Net mass
flow rate
Net
volume
flow rate
Density at reference
temperature
Mass/unit
volume,
corrected to a
given reference
temperature
ü
ü
Specific gravity
The ratio of
the density
of a process
fluid at a given
temperature to
the density of
water at a given
temperature.
The two given
temperature
conditions do
not need to be
the same.
ü
ü
ü
Mass concentration
derived from
reference density
The percent
mass of solute
or of material in
suspension in
the total solution,
derived from
reference density
ü
ü
ü
ü
96
Micro Motion 9739 MVD Transmitters
