Metrohm 900 Touch Control Manual - Manual (Page 466)

29.15 Dosing and Liquid Handling
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450 ￭￭￭￭￭￭￭￭
900 Touch Control
: maximum number of filling procedures of the dosing cylin-
der
: Dosing volume = 1,000 mL
:
Cylinder volume = 50 mL
In accordance with this formula, the dosing cylinder must be filled 20
times.
If the division results in a whole number, then the last filling procedure
need not be taken into account. In our example, the dosing cylinder must
be filled 19 times. There is no dosing during this time, i.e. the actual dos-
ing time is:
Calculation of the actual dosing time:
effective dosing time
: Total duration = 60 min
: Number of required filling procedures of the dosing cylinder =
19
: Filling time = 24 s (assumption: max. filling rate)
In accordance with this formula, the actual dosing time is 52.4 min.
This results in the following dosing rate:
Calculation of the required dosing rate:
: required dosing rate in mL/min
: Dosing volume = 1,000 mL
: Total duration = 60 min
: Number of required filling procedures of the dosing cylinder =
19
: Filling time = 24 s (assumption: max. filling rate)
According to this formula, dosing must proceed at a dosing rate of 19.1
mL/min.
Parameterization: