Metrohm tiamo 1.1 Manual - Manual (Page 400)

372 Method
fast
For less critical rapid titrations.
user
Editing the individual titration parameters which affect the titration rate.
Measured value acceptance
(only visible for Titration rate = user )
Signal drift
0.1 ... [ 20.0 (slow) ] ... [ 50.0 (optimal) ] ... [ 80.0 (fast) ] ... 999.0 mV/min (Ti-
trando)
0.5 ... [ 20.0 (slow) ] ... [ 50.0 (optimal) ] ... [ 80.0 (fast) ] ... 999.0 mV/min (Ti-
trino)
off
Drift for accepting the measured value. off means that the measured value
will be accepted when the maximum waiting time has elapsed.
Min. waiting time
[ 0 (slow, optimal, fast) ] ... 999999 s (only Titrando)
The minimum waiting period is only important for drift-controlled measure-
ments. Measured value acceptance only takes place when the minimum
waiting time has elapsed, even when the measured value drift has already
been achieved. The drift continues to be checked while the waiting time is
elapsing.
Max. waiting time
0 ... [ 38 (slow) ] ... [ 26 (optimal) ] ... [ 21 (fast) ] ... 999999 s (Titrando)
0 ... [ 38 (slow) ] ... [ 26 (optimal) ] ... [ 21 (fast) ] ... 9999 s (Titrino)
If measured value drift is switched off or has not yet been achieved then the
measured value will be accepted after the maximum waiting time has
elapsed. If the waiting time has not been newly entered then a waiting time
that is suitable for the drift will be calculated automatically according to the
following equation:
Dosing of increments
(only visible for Titration rate = user )
Volume increment
0.0001 ... [ 0.05 (slow) ] ... [ 0.10 (optimal) ] ... [ 0.20 (fast) ] ... 9.9999 mL (Ti-
trando),
0.00 ... [ 0.05 (slow) ] ... [ 0.10 (optimal) ] ... [ 0.20 (fast) ] ... 9.999 mL (Titrino)
Small volume increments are used for the determination of blank values or
for very asymmetrical curves. A good guideline is 1/20 of the expected EP
volume. For steep jumps the volume increment should be nearer 1/100 of
the expected EP volume and for flat jumps nearer 1/10. Small volume in-
crements are used for determining blank values or with very asymmetrical
curves. The accuracy of the evaluation cannot be increased by using
smaller increments as the measured value alterations between two measur-
ing points are then of the same order of magnitude as the noise.
Dosing rate
0.01 ... 166.00 mL/min, [ maximum ] (Titrando)
0.01 ... 150.00 mL/min, [ maximum ] (Titrino)
Speed at which the volume increments are added. The maximum dosing
rate depends on the cylinder volume of the used exchange unit or dosing
unit.