IKA RV 10 control FLEX - Manual (Page 44)

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Vacuum settings
 Turn the rotary/push knob to the right/left to select a menu option.
 Press the rotary/push knob.
 Turn the rotary/push knob to change the value (the magnitude of the
change is dependent on the speed at which the knob is turned).
 Press the rotary/push knob again to complete the process.
SET key: Exit menu and save changes.
ESC key: Exit menu without saving changes.
Hysteresis
The default settings for the hysteresis (as shown) are suitable for
use in most situations. The (vacuum) hysteresis value describes the
difference between the closing and opening pressures for the va-
cuum valve.
Time scaling
The time axis of the vacuum-rotation-time graph is scaled using the
value specified here. If the value = 0, then the time axis is scaled au-
tomatically.
Vacuum scaling
The vacuum axis of the vacuum-rotation-time graph is scaled using
the value specified here. If the value = 0, then the vacuum axis is
scaled automatically.
Vacuum meas. unit
Select between the units of measurement for a vacuum: mBar, Torr,
and hPascal.
Distillation settings
 Turn the rotary/push knob to the right/left to select a menu option.
 Press the rotary/push knob.
 Turn the rotary/push knob to change the value (the magnitude of the
change is dependent on the speed at which the knob is turned).
 Press the rotary/push knob again to complete the process.
SET key: Exit menu and save changes.
ESC key: Exit menu without saving changes.
Distillation method
Select between the automatic distillation methods “Volume” and
“100%”. This selection only has an effect during auto-distillation.
Volume
The measured values of the cooling water flow rate and the cooling
water temperature difference form the basis for a heat balance calcula-
tion used to determine the quantity of distillate at every stage of the di-
stillation. The distillation process is halted when the specified quantity
of distillate has been reached.
100%
The distillation process is stopped when the measured cooling water
temperature difference falls below a threshold value, i.e. as soon as a
solvent has been completely distilled off.
Drying
The cooling water temperature difference is not monitored if this option
is activated, e.g. use in processes for drying powdered media.
Heat rejection rate threshold
A limit value can be set for the heat rejection rate that is appropriate for
the condenser used; see "Worth knowing" section. The actual heat re-
jection rate is calculated during every distillation process. If the threshold
is exceeded, the distillation will be stopped and an error message dis-
played.
Maximum heat rejection rate
The maximum heat rejection rate achieved during the last distillation is
displayed. This value is for information purposes only.
RV 10.5001 connected?
If no RV 10.5001 is connected, then the cooling water flow rate will not
be monitored.
Flow rate control
It is also possible to deactivate the cooling water flow rate monitoring
when the RV 10.5001 is connected. This is necessary if, for example, a
dry ice cooler is used.
"Auto-distillation" mode is not available if the "Volume" distillation me-
thod is selected when flow rate control is switched off.
Quantity meas. unit
Select between millilitre and gram as the unit of quantity.