BINDER KBF LQC 240 - Manual (Page 46)

KBF LQC (E5.3) 07/2014 page 46/114
9. Function of light measurement, and integration: Light Quantum
Control
The KBF LQC is equipped with fluorescent tubes for UVA and the visible spectral range. These fluores-
cent tubes can be turned on manually (switch in position “I“) using switches (10) and (11) located in the
left lateral control panel. Or they can be turned on by entering a dose target value in Manual Mode higher
than a dose value already reached. In Manual Mode the fluorescent tubes automatically turn off when the
respective dose target value is reached. The manual switches permit turning on the fluorescent tubes
independent from automatic turn-off (or to prevent automatically turning-off) and thus to attain dose target
values which are higher than the entered maximum dose. This permits turning on and off the UV and the
VIS tubes independently.
Intensity of illumination [LUX] and UV intensity [W/m
2 ] are measured by optical sensors in the inner
chamber (actual value display) and are integrated temporally (dose display), i.e. the doses of illumination
[MLUXh] and of UV intensity [Wh/m 2 ] increase every minute by the respective actual value. The position
of rocker switch (2) determines if the light values are displayed as actual values or as dose values. Actual
value display serves to help the user find a representative measuring spot after charging and to control
the correct function of the illumination equipment.
In Manual Mode, you can numerically enter target dose values for UVA and visible light. When the VIS
dose is reached the message LUX DOSE REACHED appears, when the UVA dose is reached the mes-
sage UVA DOSE REACHED is displayed. The according fluorescent tubes turn off automatically to avoid
exceeding the selected dose. Turning off is possible only if the corresponding switches (10) and (11) are
in position “OFF”. Otherwise exposure to illumination and integration continue even after the message
until the switches are manually set to position “OFF”.
As soon as the second dose is reached as well the message
LUX AND UVA DOSE REACHED appears
as an alarm message, and a buzzer sounds. The alarm message can be reset with the RESET key. The
alarm message can be seen in the Event List of the MB1 controller.
In Idle Mode and in Program Mode the display function of the actual values and the integrative function
can be used, but without automatically turning on/off the fluorescent tubes and without a preselected limit
of the doses.
9.1 Illumination measurement and temporal integration
Key switch (12) in the left lateral control panel serves to start and stop the integrative function and to re-
set the integrated values of UVA and VIS.
Position of the key switch “LIGHT INTEGRATOR” (12):
•
Position “OFF”: Integrative function off (key can be removed)
There is no integration. Previously reached integrated values, if any, remain stored but are not dis-
played.
Independent of the controller operating mode and of the position of rocker switch (2), the actual values
of UVA and VIS are displayed under X.
In Idle Mode and in Program Mode, 0.0 is displayed under W; in Manual Mode the respective dose
target values are displayed under W.
On the lower left part of the controller, the notifying message “
LIGHT INTEGR. OFF” is displayed al-
ternating with the units “LIGHT kLUX W/m 2 ”.
The illumination equipment can be turned on and off by hand with switches (10) and (11).
• Position “ON”: Integrative function on (key can be removed)
Integration takes place as soon as the key switch (12) is in position “ON” and at least one target dose
value other than 0.0 has been entered. With target dose value 0.0, the fluorescent tubes do not turn
on automatically. The illumination can be turned on and off with switches (10) and (11).