User Manual

424 Method
• Filling rate with different cylinders
When you use two dosing devices with different cylinder volumes
(Dosing cylinder 2 > Dosing cylinder 1) the filling rate of the larger cyl-
inder must be at the minimum:
Filling rate 2 >= Filling rate 1 • (V
Dosing cylinder 2
/ V
Dosing cylinder 1
)
• Rule for dosing rate
The dosing rate must not exceed 75 % of the filling rate of the smaller
cylinder. This corresponds to the following values (at the maximum fill-
ing rate):
Cylinder volume Max. dosing rate Max. flow rate
Exchange unit Dosing unit Exchange unit Dosing unit
1 mL 2.25 mL/min --- ca. 130 mL/h ---
2 mL --- 5.00 mL/min --- ca. 300 mL/h
5 mL 11.25 mL/min 12.50 mL/min ca. 670 mL/h ca. 750 mL/h
10 mL 22.50 mL/min 25.00 mL/min ca. 1.3 L/h ca. 1.5 L/h
20 mL 45.00 mL/min 50.00 mL/min ca. 2.7 L/h ca. 3.0 L/h
50 mL 112.50 mL/min 124.50 mL/min ca. 6.7 L/h ca. 7.5 L/h
Sensor
Measuring input
[ 1 ] ... 2
(835, 836, 842)
[ 1 ] (855)
[ 1 ] ... 2, diff.
(Titrino)
Selection of the measuring input to which the sensor is connected.
Sensor
Sensor name, [ pH electrode ]
Selection of the pH sensor from the list of sensors defined in the sensor ta-
ble. The calibration data for the sensor will be adopted for the determina-
tion.
Temperature measurement
Type of temperature measuring (only Titrando):
continuous
A temperature sensor must be connected. The temperature is measured
continuously.
[ automatic ]
If a temperature sensor is connected then the temperature will be meas-
ured continuously. Otherwise the manually entered
Temperature (tab Titra-
tion parameters
) will used.
off
The temperature will not be measured. The
Temperature (see Titration pa-
rameters) which has been entered manually will be used.
Stirrer
Stirrer
[ 1 ] ... 4, off
(only Titrando)
Selection of the stirrer.
off means that no stirrer will be used.
Stirring rate
-15 ... [ 8 ] ... 15
(only Titrando)
Setting the stirrer speed. The direction in which stirring takes place changes
as the sign in front of the stirrer speed changes.
Switch off automatically
[ on ], off
(only Titrando)
If this option is enabled, the stirrer will be switched off automatically when
the command is finished.