3 General principles – analysis
3.2 Terms PIOX S72*
2022-05-15, UMPIOX_S72xV1-9EN
12
3.2 Terms
The transmitter can be used for the determination of the following physical quantities for analysis:
For the conversion of kg/m
3
to g/cm
3
and from metric to imperial units, see the menu item Special functions\Units
of measurement.
Tab. 3.1: Terms
term explanation
analyte components of a mixture which are to be chemically analyzed
matrix components of a mixture which are not to be analyzed
Tab. 3.2: 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
volume fraction Volume fraction volume fraction of the analyte in
the mixture
Vol%
vol%
ppm
mole fraction Mole fraction analyte proportion of the
mixture (mole fraction, particle
fraction)
mol%
ppm
analyte concentration Analyte concentr. analyte mass per volume of the
mixture at reference
temperature
g/l
matrix concentration Matrix concentration* matrix mass per volume of the
mixture at reference
temperature
g/l
density Density density at current fluid
temperature (operating density)
kg/cm
3
g/cm
3
pounds per gallon
standardized density Norm. density density at a reference
temperature (laboratory
density, reference density)
kg/cm
3
g/cm
3
pounds per gallon
standardized sound speed Std. sound speed sound speed at reference
temperature
m/s
* 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.
The values of the analysis quantity for analysis of customer specific data sets and standard data sets can differ from
each other.
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