Metrohm 917 - Page 285

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28 Parameter
917 Coulometer
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271
NOTICE
The concentration, validity of the titer and the working life of the titrant
are ignored.
Selection Selection of configured titrants | not defined
Default value not defined
not defined
No check takes place.
Filling rate
Rate at which the dosing cylinder is filled.
Input range 0.01 - 166.00 mL/min
Selection maximum
Default value maximum
maximum
The maximum filling rate depends on the cylinder volume (see chapter
31, page 294).
However, in order to ensure uninterrupted dosing, the following points
must be taken into account:
￭ Use the highest possible filling rate in order to keep the filling times as
short as possible. The filling rate should be decreased for viscous liq-
uids.
￭ When you use two buret units with different dosing cylinders, the fill-
ing rate for the larger sized cylinder must be at the minimum:
= filling rate in mL/min for the larger sized cylinder
= filling rate in mL/min for the smaller cylinder
= cylinder volume in mL of the buret unit of the second dosing
device
= cylinder volume in mL of the buret unit of the first dosing
device
Example:
Dosing device 1: volume = 20 mL, filling rate = 50 mL/min
Dosing device 2: volume = 50 mL
Filling rate 2 ≥ 50 mL/min · 50 mL / 20 mL ≥ 125 mL/min