9 Measurement
9.1 Parameter input PIOX R721
2021-09-01, UMPIOXR721V1-3EN
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9.1.4 Selection of the physical quantity for analysis
A model, describing a substance system consisting of analyte and matrix, was developed in the FLEXIM laboratory. This
model enables the calculation of the physical quantity for analysis from the measured refractive index and the fluid tem-
perature.
• Select the physical quantity for analysis.
• Press ENTER.
This display will not be indicated if Other fluid is selected.
.
• Enter the operating point for the physical quantity for analysis.
• Press ENTER.
Tab. 9.1: Physical quantities for analysis
Physical quantity for analysis display description unit of measurement
mass fraction Mass fraction mass fraction of the analyte in
the mixture (mass fraction,
weight proportion)
M%
wt%
ppm
mole fraction Mole fraction analyte proportion of the
mixture (mole fraction, particle
fraction)
mol%
ppm
volume fraction Volume fraction volume fraction of the analyte in
the mixture
Vol%
vol%
ppm
concentration analyte Analyte concentr. analyte mass per volume of the
mixture at reference
temperature
g/l
concentration matrix Matrix concentration matrix mass per volume of the
mixture at reference
temperature
g/l
density Density density at current fluid
temperature (operating density)
kg/m³
g/cm³
pounds per gallon
standardized density Norm. density density at a reference
temperature (laboratory
density, reference density)
kg/cm³
g/cm³
pounds per gallon
normalized refractive index Norm. refrac. index refractive index at reference
temperature
-
Notice!
The analysis quantity Matrix concentration is only displayed in the menu Parameters\Select analysis
quant. if a fluid is selected in which analyte and matrix are miscible in any proportion.
Notice!
For the conversion of kg/m³ to g/cm³ and the display from metric to imperial units, see the menu item
Miscellaneous\Units of measurement.
Parameters\Select analysis quant.
Parameters\Select analysis quant.\...\OP analysis quantity
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