Metrohm 900 Touch Control Manual - Manual (Page 63)

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8 Titrants
900 Touch Control
￭￭￭￭￭￭￭￭ 47
Cylinder volume
Cylinder volume of the dosing unit. It will be read out automatically on
dosing units with integrated data chips.
Selection 2 | 5 | 10 | 20 | 50
Default value 20
Serial no. cyl.
Serial number of the dosing cylinder. It will be read out automatically on
exchange or dosing units with integrated data chips. The number can be
changed manually at any time, e.g. when a cylinder is replaced.
Entry 8 digits maximum
[Valve disk]
Specify the shift direction of the valve disc (see Chapter 8.4.3, page 51).
[GLP test]
Define the time interval for the GLP test (see Chapter 8.6, page 56).
[PREP param.]
Enter the parameters for the preparation (see Chapter 8.4.1, page 47).
[Tubing param.]
Enter the parameters for the connected tubings (see Chapter 8.4.2, page
48).
8.4.1 Parameters for preparing (PREP) and emptying (EMPTY)
Titrant: Edit ▶ Dosing unit ▶ PREP param.
In the dialog Dosing unit / PREP parameters, you can adjust the
parameters for the execution of the Prepare (command PREP) and
Empty (command EMPTY) functions. The Prepare function is used to
rinse the cylinder and tubing of the dosing unit and fill it air bubble-free.
You should carry out this function before the first determination or once
per day. The EMPTY function empties the cylinder and the tubings of the
dosing unit.
Dosing port PREP/EMPTY
Dosing port through which the cylinder contents are ejected.
Selection Dosing port 1 | Dosing port 2 | Fill port | Spe-
cial port
Default value Dosing port 1
Dosing rate Dos. port 1
Rate used for the aspiration and ejection of the reagent via dosing port 1.
Input range 0.01 - 166.00 mL/min