HP LC2000r - NetServer - 128 MB RAM Dokumentacja Strona 46

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Linearity
Linearity calculates a linear regres-
sion using the least square error for
the model y = a + bx. Linearity can
be carried out by multiple injections
and multiple determinations. Figure
30 shows the planning dialog of
checkpoint “linearity”.
Planning data
Determination method:
Regression weighting:
unweighted, weighted 1/x,
weighted 1/x
2
or
Proportionality ( test for
validity of one point
calibrations)
Other data:
Number of levels
Y-units
Multiple injection possible
Multiple determination
possible
Output settings for calculations
Residual standard deviation
Method standard deviation
Calibration function
The calibration function is the cor-
relation between the expected value
of the test characteristic, e.g. the
extinction (see DIN 55350 part 13),
and the content, e.g. a mass concen-
tration. You can choose the maxi-
mum degree of curve fit for the cali-
bration curve. 1st order is standard
and 3rd order is the maximum
(cubic curve). Figure 31 shows the
planning dialog of checkpoint “cali-
bration function”
Planning data
Number of levels
Unit of values
Curve fit display 1-3
Multiple injection possible
Multiple determinations
possible
Figure 30
Planning dialog of checkpoint “Linearity”
Figure 31
Planning dialog of checkpoint “Calibration Function”
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