KERN OBE 101, Инструкция пользователя

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11 OBE-1-BA-e-1611
4
Assembly
4.1 Microscope head
Inside the packaging the microscope head is already mounted but inclined towards
the rear. In order to turn it to the front you must loosen the fixing screw on the tube
connection point and after the turning fix it again with the screw. In case of removing
the head completely from the housing, you should always make sure that you do not
touch the lenses with your bare fingers and that no dust enters the apertures.
4.2 Objectives
All four objectives are already mounted to the nosepiece. After removing the
protective foil they are ready for use. They are ranged in such a way that if you turn
the nosepiece clockwise, the objective with the next higher magnification appears.
When the objectives need to be dismounted, you should always make sure that you
do not touch the lenses with your bare fingers and that no dust enters the apertures.
For objectives which are marked “OIL”, you must use an immersion oil with the
lowest level of inherent fluorescence.
4.3 Eyepieces
You must always use eyepieces with the same magnification for both eyes. These
are already placed onto the tube connectors and each is fixed with a small silver
screw under the eyepiece on the tube connectors, so that they are turnable but you
cannot pull them out of the tube. When changing the eyepieces, you must loosen
these screws and once the new eyepiece is fitted, then they must be re-tightened.
You should always make sure that you do not touch the lenses with your bare fingers
and that no dust enters the apertures.
4.4 Condenser
The condenser is firmly fixed onto a holding ring (condenser holder) underneath the
microscope stage. The lever for the aperture diaphragm is directed towards the front.
There is the ability to adjust the height of the condenser, but not to centre it. We
recommend that you use the course adjustment knob to bring the specimen stage to
its uppermost position when you need to remove the condenser. Then use the focus
dial of the condenser to move the condenser holder to a low position. In this way the
condenser can be taken off after loosening the three screws on the holding ring.
If the microscope has no focus dial for the condenser, the height adjustment is
done by turning the condenser on its vertical axis.
You should avoid touching the optical lenses with bare fingers.