Metrohm 746 VA Trace Analyzer - Manual (Page 302)

5.6.3 SUBSTANCES
746 VA Trace Analyzer / 747 VA Stand
5-151
Parameter Range; Default value / Meaning
M.conc./cm 0.001...999.99 ng...kg/L;
Axis scaling for plot of calibration curve
Here, the scale in g/L per cm for the plot of the x axis of the calibration
curve (
ρ
eff
) can be entered. In the absence of an entry, the entire curve
is plotted within 10 cm.
M.conc.begin auto, zero; auto
Begin of x axis for plot of calibration curve
Selection of the begin of the x axis (mass concentration) for the plot of
the calibration curve:
auto Automatic selection of the begin
zero Begin fixed to 0 g/L
V0.CSoln. 0.1...50.0 mL; 5.000 mL
Addition volume of calibration solutions
Volume of every calibration solution that must be added to the meas-
uring vessel.
If work is performed with the 695 Autosampler, an asterisk
* can be
entered here in place of a volume. However, this is admissible only if
the instruction
CSOLN/F with subsequent solution transfer to the
auxiliary or measuring vessel is used.
If calibration curves of several substances are recorded simultane-
ously,
V0.CSoln. must be the same for every substance.
Coefficients display only
Coefficients
Title for coefficients of the calibration curve.
Y.offset -999.9...999.9 e-20...e+20;
Intercept of calibration curve
Display of the intercept of the calculated calibration function of type
linear or nonlin in A, W or s. This value can be changed manually.
This value can be used in formulae as KY: ( = sub-
stance name) for further calculations.
Slope -999.9...999.9 e-20...e+20;
Slope of calibration curve
Display of the slope of the calculated calibration function in AL/g,
WL/g or sL/g. This value can be changed manually.
With non-linear curves, Slope represents the slope in the linear region
(see also Curve type ).
This value can be used in formulae as KS: ( = sub-
stance name) for further calculations.
Nonlin. -999.9...999.9 e-20...e+20;
Non-linearity factor
Display of the non-linearity factor of the calculated nonlinear calibra-
tion function in [Al/g]
4 , [WL/g] 4 or [sL/g] 4 (see also Curve type ). This
value can be changed manually.
This value can be used in formulae as KN: ( = sub-
stance name) for further calculations.