Metrohm 746 VA Trace Analyzer User Manual
Page 313
5.6 Method Specifications
746 VA Trace Analyzer / 747 VA Stand
5-162
Parameter
Range; Default value / Meaning
Instrument variables
The following instrument variables can be used in formulae:
C##
Common variable C01...C18 from the working
memory (see section 5.4.5). The common vari-
ables can be used to exchange results between
different determinations.
ED:
Difference of the mean values of the evaluation
quantities (
I.delta
,
P.delta
or
t.delta
) for the
specified substance
and variation
.
The numeric value put out refers to the basic
unit A, W or s.
ES:
Standard deviation of evaluation quantities
(
Std.dev.
) for the specified substance
and variation
. The numeric value put out
refers to the basic unit A, W or s.
EU:
Mean value of peak voltages (
U
) or half-wave
voltages (
U/2
) for the specified substance
and variation
. The numeric value
put out refers to the basic unit V.
EV:
Mean value of evaluation quantities (
I.mean
,
P.mean
or
t.mean
) for the specified substance
and variation
. The numeric value
put out refers to the basic unit A, W or s.
MA:
Standard addition mass (
Add.mass
) for the
specified substance
. The numeric
value put out refers to the basic unit g.
MC:
Mass concentration
ρ
s
(
Mass conc.
) for the
specified substance
. The numeric
value put out refers to the basic unit g/L.
MD:
Total scatter (
MC.dev.
) of mass concentration
ρ
s
for the specified substance
. The nu-
meric value put out refers to the basic unit g/L.
ML:
Scatter due to calibration (
Cal.dev.
) of mass
concentration
ρ
s
for the specified substance
. The numeric value put out refers to the
basic unit g/L.
MS:
Substance mass (
Mass
) in the measuring vessel
for the specified substance
. The nu-
meric value put out refers to the basic unit g.
KD:
Mean scatter (
Mean deviat.
) for calibration and
standard addition curve of the specified sub-
stance
. The numeric value put out re-
fers to the basic unit A, W or s.
KN:
Non-linearity factor (
Nonlin.
) for calibration and
standard addition curve of the specified sub-
stance
. The numeric value put out re-
fers to the basic unit [AL/g]
4
, [WL/g]
4
or
[sL/g]
4
.