IKA RV 10 control FLEX auto User Manual
Page 60
60
Starting automatic distillation
Press the Rotating/ Pressing knob with the “Start” or “Continue” field
selected. If the “100% distillation” or “Drying” options are active, then
the distillation will start immediately, provided that the necessary condi-
tions are fulfilled.
When the “Volume” distillation method is used, a further screen with
additional distillation parameters will be displayed.
Turn the Rotating/ Pressing knob to the right/left to select a menu
option.
Press the Rotating/ Pressing knob.
Turn the Rotating/ Pressing knob to change the value (the magnitude
of the change is dependent on the speed at which the knob is turned)
Press the Rotating/ Pressing knob again to complete the process.
Distillation
This field indicates the distillation method selected in Settings/Distillation
and cannot be changed.
Amount
Enter the amount, which the flask contains.
Distillate
Enter the amount, which you want to distill off.
Efficiency
Balancing requires a precise thermal efficiency to be entered.
The efficiency is dependent on a combination of factors that affect the
distillation process, so it must initially be estimated. The first time a di-
stillation process is carried out should therefore be used for calibration.
Following completion of the distillation process, determine the quantity
of distillate produced and calculate the actual heat rejection rate accor-
ding to the following formula:
η
th
. m
(calc)
η
P
=
m
(gem)
η
P
Actual efficiency
η
th
Estimated efficiency
m
(gem)
Measured quantity of distillate
m
(calc)
Specified (calculated) distillate quantity
For subsequent distillations, the actual calculated efficiency should be
entered; this will ensure that subsequent automatic distillations under
the same distillation and ambient conditions are performed with suffici-
ent precision.
End of automatic distillation
Automatic distillation will stop when the following conditions are met:
- Volume controlled
The specified quantity of distillate has been reached.
- 100% Distillation
The measured cooling water temperature has fallen below a target va-
lue, indicating that the solvent is fully evaporated.
The distillation can also be stopped manually:
Press the Rotating/ Pressing knob with the “Stop” display field selected.
"Auto-distillation mode with boiling point recognition" menu
"Auto-distillation mode with boiling point recognition" display screen
1. Operating mode display
2. Control field for solvent
3. Vacuum display (actual value)
4. Vacuum display (target value)
5. Control field for „Start/ Stop“ distillation
6. Timer display
7. Distillation progress indicator
(% of required quantity of distillate)
8. Vacuum-rotation-time graph
9. Display of flow rate, differential temperature, and condenser heat
rejection rate
10. Rotary speed display (target value) and speed measurement unit
11. Error message in case of fault, otherwise status indicator
Note: volume distillation is not possible as the solvent must be known
in this mode.
This mode allows selection of the bath temperature and speed of rota-
tion via the "Boiling point recognition" control field instead of selection
of the solvent.