Metrohm 746 VA Trace Analyzer - Manual (Page 214)

5.4.4 SAMPLES
746 VA Trace Analyzer / 747 VA Stand
5-63
Parameter Range; Default value / Meaning
Method.call
XXXXXXXX
--------
11 characters;
Method call
For automatic call-up of a method, method name, stand number and
program run mode can be entered here. The entry must have the
following format:
xxxxxxxx.SR xxxxxxxx = Method name
S = Stand address ( 1...3 )
R = Run mode ( C,D,T )
( Calibration/Determination/
Test )
With this entry, all methods loaded in the method memory are dis-
played in the softkeys and can thus be taken over directly.
Method name XXXXXXXX is copied to the field Method.call .
Without entry of a stand number, the VA Stand set in the parameter
Stand address on the "MONITORING" page is used as default.
Without entry of the run mode, the program run mode set in the
parameter
Run mode on the "MONITORING" page is used as default.
The automatic method call functions only when the specified method
is present in the working memory.
Sample size/S0 1.0...9999.9 uL...L / ug...kg; - L
Sample size
Entry of the sample size (variable S0 ) in this column as either a volume
or weight is mandatory, otherwise the determination can not be
started (error message
Missing sample ). Entry of an asterisk * is also
possible, but only
• if no concentrations or dispensed volumes based on S0 need be
calculated, or
• if the instruction SMPL/F is used with the 695 Autosampler with
subsequent solution transfer to the auxiliary or measuring vessel,
or
• if the instruction CSOLN>M or CSOLN/F for calibration solutions is
used with the 695 Autosampler.
The use of S0 depends on whether work is performed with undiluted
or diluted samples:
• Undiluted sample, entry as volume
The entered sample size
S0 (in µ L, mL or L) is used as addition
volume for the SMPL instructions. The substance content in g/L is
identical to the calculated mass concentration
ρ
s
( Mass. conc. ,
see section 5.5.2).
• Undiluted sample, entry as weight
If the sample size is entered as a weight, the density must be
entered under
S2 in g/mL (with no entry, S2 = 1.000 is set
automatically). For calculation of the addition volume for the
SMPL instructions, the entered sample size
S0 in g is divided by
the density S2*1000 in g/L. To obtain the substance content in
g/g, the calculated mass concentration ρ
s
( Mass. conc. , see sec-
tion 5.5.2) is divided by S2*1000 (see section 5.6.4).