126 CoriolisMaster FCB400, FCH400 CORIOLIS MASS FLOWMETER | OI/FCB400/FCH400-EN REV. E
… 9 Operation
… Concentration measurement DensiMass
Accuracy of the concentration measurement
The accuracy of the concentration measurement is determined
in the first instance by the quality of the matrix data entered.
However, as the calculation is based on temperature and density
(the input variables), the accuracy of the concentration
measurement is ultimately determined by the measuring
accuracy of the temperature and the density.
Example:
Density of 0 % alcohol in water at 20 °C (68 °F): 998.23 g/l
Density of 100 % alcohol in water at 20 °C (68 °F): 789.30 g/l
Concentration Density
100 % 208.93 g/l
0.48 % 1 g/l
0.96 % 2 g/l
0.24 % 0.5 g/l
Thus, the accuracy class of the density measurement directly
determines the accuracy of the concentration measurement.
Entering the concentration matrix
The concentration matrix for the DensiMass function can be
created in three ways:
1. The desired ABB matrix is indicated when ordering the
device. The device is then delivered with the
corresponding preconfiguration.
2. The matrix is created using a special software and
transferred to the device via the infrared service port
adapter.
3. The matrix is entered into the device manually as
described below.
For more information, please contact ABB Service or the sales
organization.
Manual input of the matrix
Enter the concentration matrix via the menu ‘Device Setup /
...Variable Matrix / ...Configuration’.
Data for the matrix must be available as described in chapter
Structure of the concentration matrix on page 128.
Step 1:
Menu ‘… / ...Variable Matrix’.
Parameter Description
Matrix Name Entry of a name for the matrix.
Alphanumeric, maximum 16 characters
Unit Name Entry of a name for the matrix concentration unit.
Alphanumeric, maximum 7 characters
Concentration Min Entry of the minimum and maximum
concentration limit for the matrix calculation.
Concentration Max
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