IKA RV 10 series Betriebsanleitung Seite 47

Menu (details)
1. Evaporator
Modes
Automatic: In this mode, the system will detect the actual eva-
poration by checking the temperature difference between water
input and water output. The default setting of the medium tem-
perature is 60 °C, the user can set the medium temperature ma-
nually. If the expected evaporation temperature is higher than 90
°C, please change the medium from water to oil, and use high
temperature medium, e.g. silicone oil. In this mode, measurement
will start automatically when the heating bath reaches the set
temperature, the temperature difference will be below a threshold
value, the water flow rate must be within 30-100 L/h, and the lift
moves down automatically. You can change the speed manually.
Manual: In this mode the user can set all values manually. When
the measurement is started the system is evacuated until it reaches
the set pressure value. The lift has to be moved manually.
Pump %: In this mode the pump can be run in a long term, set-
ting a value between 100 % and 1% of the possible pump speed.
Volume: This mode is used to distill a specific amount of the used
solvent. The measured values of the cooling water flow rate and
the cooling water temperature difference from the basis for a heat
balance calculation used to determine the quantity of distillate at
every stage of the distillation. The distillation process is stopped
when the specified quantity of distillate has been reached.
Solvent: Select the solvent you want to distill.
Target: Enter the amount, which you want to distill off.
Efficiency: Balancing requires a precise thermal efficiency to be
entered.
Adjustment: The efficiency is dependent on a combination of fac-
tors that affect the distillation process, so it is initially estimated.
The first time a distillation process is carried out should therefore
be used for adjustment. The actual efficiency will be recalculated
after the measurement based on the target volume and the actu-
ally distilled volume.
Program: This entry is a link to the "Programs" menu.
100 %:
Solvent: The distillation process is stopped when the measured
cooling water temperature difference falls below a threshold va-
lue, i.e. as soon as a solvent has been completely distilled off.
Drying: The cooling water temperature difference is not moni-
tored if this option is activated, e.g. use in processes for drying
powdered media.
Cleaning
Start after...: Set the minimum time that a measurement has to
run before the cleaning after the measurement is activated. The
cleaning process starts when the measurement has been running
for at least the set time.
Duration: Set the duration of the cleaning process.
Pump speed: The set pump speed in the cleaning menu is used to
set the speed of the pump during the cleaning process.
Higher speed causes partial vacuum in
NOTICE
the glassware if the system is closed.
High speed cleaning affects the pump
membrane lifetime.
Clean now: This starts the cleaning process manually.
Limits
Manual: This option allows user to set the permitting operating
vacuum range.
Pump %: This option allows user to set the permitting operating
pump speed range.
Hysteresis
The (vacuum) hysteresis value describes
the difference between the closing and
opening pressures for the vacuum valve.
Setting the hysteresis value too low can
have a negative effect on the vacuum
pump and the vacuum valve. The hyste-
resis function is only used for indoor vacuum or uncontrollable
vacuum pumps.
Automatic: Hysteresis is always 10 % of the actual pressure.
Manual: Manual value specification of hysteresis.
Solvent Library
User can select the solvent which will be
distilled, the parameters (such as, Name,
Formula, Bath temperature, Rotation
speed, Boiling point, Efficiency, Heat ca-
pacity, Enthalpy, Density and i-factor) will
be shown in the library. User can set the
evaporating bath temperature, efficiency and the rotation speed.
It is possible to add up to five new customized solvents to the
solvent list. The customized solvents appear in orange and can be
found on the top of the solvent library.
Name and formula: The name and the formula help to identify
the solvent.
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