Metrohm 900 Touch Control Manual - Manual (Page 465)

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29 Parameters
900 Touch Control
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: Filling time in s
: maximum filling rate in mL/min
: current filling rate in mL/min
: Filling time for one cylinder volume:
￭ 20 s (exchange unit)
￭ 18 s (dosing unit)
The maximum filling rate depends on the cylinder volume of the exchange
unit / dosing unit attached (see Chapter 32, page 488). The approximate
filling times (including valve switching) are given in the table below for
various cylinder volumes (exchange unit and dosing unit) at different filling
rates:
Cylinder vol-
ume
Filling time in s
max. 100 mL/min 50 mL/min 10 mL/min
1 mL 24 / – – – –
2 mL – / 22 – – –
5 mL 24 / 22 – – 34
10 mL 24 / 22 – – 64
20 mL 24 / 22 – 28 124
50 mL 24 / 22 34 64 304
Application example
1 L reagent is to be dosed within 1 hour with a 50 mL exchange unit.
How large is the dosing rate?
Conditions:
: Total duration = 60 min
: Dosing volume = 1,000 mL
: Filling time = 24 s (assumption: max. filling rate)
:
Cylinder volume = 50 mL
Calculation of the number of filling procedures: