06/05-W97-Neu
Instruction Sheet 662 161
Monocular Student Microscope (662 161)
1 Eyepiece
2 Tube with locking screw
3
4
5
6
7
8
9
10
11
Microscope head, rotatable
Triple nosepiece
Coarse focus
Condenser with iris diaphragm and filter holder
Fine focus
Fuses
Power switch
Illumination base
Stage with holding clips
12 Specimen guard, adjustable
Safety Notes
The illumination device conforms to the Safety Require-
ments for Electrical Equipment for Measurement,
Control and Laboratory Use according to DIN EN
61010 Part 1 and is constructed to Protection Class 1.
It is intended for use in dry areas which are suitable
for electrical apparatus or equipment.
1
Description
The monocular student microscope allows two-dimensional
viewing of objects such as thin sections of plant and animal
objects at between 40x and 400x magnification.
2
Included
When properly used, safe operation of the student microscope is ensured. Safety is not guaranteed however if the
apparatus is operated improperly or handled carelessly. If
there is a likelihood that safe operation is no longer possible, the apparatus must be immediately removed from
service (e.g., in cases of visible damage).
1 microscope
• Before start-up, inspect the housing for damage. In case
of malfunction or visible damage, take the lamp out of
service and secure it against unauthorized or unintended
use.
- Thread objectives into nosepiece, observing the correct
order.
- Rotate longest objective into the beam path and adjust
specimen guard so that the stage cannot contact the objective when raised in coarse or fine mode.
• Operate only using a suitable power supply.
• Plug only into receptacles having a grounded neutral
line.
• Unplug the device before replacing the lamp or fuse.
• Replace fuse only with one of equivalent rating.
1 dust cover
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First use
Instruction Sheet 662 161
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Seite 2/2
Technical data
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Magnification:
Viewing:
40×, 100×, 400×
45° monocular head, rotatable
by 360°
Eyepiece:
Widefield, 10×,
with pointer and eyepiece lock
Objectives:
4×/0.10; 10×/0.25; 40×/0.65
achromatic
Focusing:
Fine and coarse, coaxial with
slip clutch
Stage:
110 mm × 120 mm
with 2 slide clips
Illumination:
Built-in illuminator, 20 W
with blue filter and convex lens
0.65 condenser with iris diaphragm and filter holder
Condenser:
Power requirement:
230 V
Fuses:
2 × 0.16 slo-blow
Dimensions:
Weight:
135 mm × 175 mm × 370 mm
3.5 kg
5
Operation
Pre-setting the iris diaphragm:
- Turn on illuminator.
- Fully open iris diaphragm, turn objective (4x) into beam
path and remove eyepiece from tube.
- Close iris diaphragm until the visible light spot appears
sharp.
Changing the lamp
- First unplug the power cord and wait for the microscope to
cool.
- Unscrew the complete substage condenser assembly.
- Press lamp into the socket and remove by turning counterclockwise.
- Press new lamp into socket and lock in place by turning
clockwise.
- Reinstall complete substage condenser assembly.
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Changing the fuses
- Always unplug the power cord first!
- Unscrew both fuse holders by turning counter-clockwise
with a narrow object.
- Remove defective fuses and install new ones.
- Screw fuse holders back into the opening provided.
8
Storing
- Keep microscope clean and dust-free.
- Always leave objectives and eyepieces in the microscope.
9
Cleaning
- If the lenses become very dirty, use a soft cloth and a little
alcohol to clean.
- Clean internal lenses only with a soft brush.
- Reinsert eyepiece in tube.
Microscopy:
- Clip slide to stage using clips.
- Rotate objective into the beam path and move slide so that
the specimen is clearly illuminated.
- Look through eyepiece and use the coarse focus wheel to
focus the specimen.
- If necessary adjust the specimen guard to permit a greater
height for the stage.
- Use the fine focus wheel to view different levels of the
specimen.
If the specimen is receiving too much light and therefore
shows too little contrast, close the iris diaphragm slightly
(try to avoid closing the diaphragm more than half way).
- Rotate the turret to change to an objective with greater magnification.
- Readjust the fine focus if necessary.
LD Didactic GmbH . Leyboldstrasse 1 . D-50354 Huerth / Germany . Phone (02233) 604-0 . Fax (02233) 604-222 . e-mail: info@ld-didactic.de
by LD Didactic GmbH
Printed in the Federal Republic of Germany
Technical alterations reserved