BUCHI Encapsulator B-395 Pro - Manual (Page 39)

6 Operation
39 B-395 Pro Operation Manual, Version C
6 .4 Menu functions of the upper touch screen
Vibration (frequency and amplitude), electrostatic dispersion (voltage), and light intensity of the stro-
boscope lamp are controlled on the upper touch screen. When the Encapsulator is switched on, the
touch screen runs an initialization program for few seconds. Then the screen shows the start menu
(Screen 6.3) with three sub-parts (see screen 6-4 to 6-6) for frequency, electrode, and more options
concerning frequency and light intensity.
2 1 3 4
7 5 6
a On/off switch for frequency control.
 Indication of control parameter and status of control
(value or off).
 Button for passing to screen 6-4 for setting frequency
parameters.
 Button for storing set values: press twice within one
second. A sound indicates that the values are stored.
 On/off switch for electrode control.
 Button for passing to screen 6-5 for setting electrode
parameters.
 Button for passing to screen 6-6 for setting more
frequency parameters.
Screen 6-3: Start menu of the upper touch screen
The frequency regulation generates the appropriate elec-
tric oscillation in the vibration unit. Pressing on the (+) and
(–) buttons will change the frequency. Pressing the “on/off”
button activates or deactivates frequency. Pressing “Esc”
will return you to the start menu and the set value will be
kept.
Screen 6-4: Frequency regulation
The electrostatic dispersion unit is used to charge the
surface of the beads. The repulsion forces induced by the
equally charged surfaces prevent the beads from hitting
each other in flight, and from hitting each other as they enter
the hardening solution. The applied voltage often lies in the
range of 500 to 2000 V, depending primarily on the bead
size and the liquid flow velocity. In this way, the Encapsulator
B-395 Pro can routinely generate bead batches with homo-
geneity greater than 95 %.
Pressing on the (+) and (–) buttons changes the electrostatic
dispersion parameter. The system needs few moments to
reach the set value. Pressing “Esc” will return you to the
start menu and the set value will be kept.
Screen 6-5: Electrostatic dispersion unit