Delphin Expert Logger Manual page 133

Expert Logger
Mode : You may select between various methods
Offset
l
An offset shifts the curve by a fixed value, for example the given value is
added to the measurement value.
Offset and slope
l
Allows a shifting of the curve and an increase in its slope.
Quadratic
l
Generates a quadratic curve through the given points to linearise the meas-
ured values.
Linear interpolation
l
Set a table for converting measured values into display values. Linear inter-
polation takes place between the given points.
Spline interpolation
l
An optimal fitting polynomial 3rd degree (cubic spline) is determined using
spline interpolation for the given values which is then used to to convert the
measured values.
Info
You can use copy and paste to transfer data from an Excel table into
the dialog table. Position the cursor in the table's top left field of the
first row. Extra rows are created automatically when this is permitted
by the selected mode.
Click on a row and use the Del key to delete unwanted rows. Insert
extra rows in a linear interpolation using the Return key.
A created table can be exported and then re-imported later: Export
and Import.
Format information for export and import
To import or export a table, please note the following information.
A table file for a linearisation channel is indicated by the suffix ".tab". Fur-
thermore, these table files are constructed according to the following
scheme:
Row Text
1 Mode: X;"" Selection of the table mode
2 y1;z1
3 y2;z2
... ...
Please note
For the "Mode:" attribute, one of the following values can be entered for
"X" in the diagram shown above:
Expert Logger Manual
Januar 2018
Description
First calibration point
Second calibration point
Other calibration points
: The decimal separator "," is used for the values y and z.
133
Delphin Technology AG