Proline Promass 83 PROFIBUS DP/PA Commissioning
Endress+Hauser 77
Calculation type “% MASS 2D” or “% VOLUME 2D”
For this type of calculation, the relationship between the two variables concentration and reference
density must be known (2-dimensional), e.g. by a table. In this way, the concentration can be
calculated from the measured density and temperature values by means of the following formula
(the coefficients A0, A1, etc. have to be determined by the user):
F06-83x-003
K Concentration
ρref Currently measured reference density
A0 Value from function (COEFFICIENT A0 (7032))
A1 Value from function (COEFFICIENT A1 (7033)
A2 Value from function (COEFFICIENT A2 (7034)
A3 Value from function (COEFFICIENT A3 (7035)
A4 Value from function (COEFFICIENT A4 (7036)
!
Note!
Promass determines the reference density by means of the density and temperature currently
measured. To do so, both the reference temperature (function REFERENCE TEMPERATURE) and
the expansion coefficients (function EXPANSION COEFF........) must be entered in the measuring
system.
The parameters important for measuring the reference density can also be configured directly via
the “Commissioning” Quick Setup menu.
Calculation type “OTHER 3D” or “OTHER 2D”
With this option, users can enter a free selectable designation for their specific concentration unit
or target parameters (see function TEXT ARBITRARY CONCENTRATION (0606)).
K = A0 + A1 + A2 + A3 + A4
⋅ ρ ⋅ ρ ⋅ ρ ⋅ ρ
423
ref ref ref ref
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