UMPIOXR400V2-7-1EN, 2012-07-01
57
13 Program RMKoeff
13.2 Calculation of Characteristics and Coefficients
The characteristics will be generated by polynomials of grade 1...3 from a data table or from a test series.
•
Click button GET IT FROM YOUR SAMPLES (see Fig. 13.3).
•
A window will be opened (see Fig. 13.4). Enter the values of the test series.
Fig. 13.4: Example of a test series
The X axis quantity is the refractive index nDT related to a standard temperature. The Y axis quantity is the
required process parameter. The process parameter and its unit of measurement are user defined, e.g. concentra-
tion in w%, g/l or mol/l.
•
In box TYPE OF FITTING, enter the type and degree of the polynomial function to be used to fit the curve to the
measurement data.
The measurement range shown in the diagram can be entered manually or generated using the program RMKoeff.
•
Clear the two boxes FROM TABLE and AUTOMATIC if the measurement range of the diagram is to be entered
manually.
•
Select the two boxes FROM TABLE and AUTOMATIC if the measurement range of the diagram is to be
defined by the program.
•
Press OK.
The determined coefficients will be displayed in the boxes K0 to K3.
The created data record can be tested. Enter pairs of values for the refractive index and temperature in box 13 (see
Fig. 13.3).
By pressing the right
mouse button and click
on the option SAVE
THIS TABLE, the data
table can be stored.
fit to a polynomial of
degree 1
