OPTO-EDU MDJ A13.2602 Manuale utente

A13.26 02

Student Biological

Instruction Manual

To ensure the safety and obtain satisfactory performance, please study this instruction manual thoroughly bef

ore start to use the instrument.

CONTENTS

1. Applications .......................................................................... 3

2. Specification ......................................................................... 3

3. Installation and Operation .................................................... 5

4. Maintenance ........................................................................ 7

5. Troubleshooting ................................................................... 9

Fig.1 MDJ200 Metallurgical Microscope

Fig.2 MDJ100 Metallurgical Microscope

1. Applications

The MDJ series Metallurgical Microscope is widely used for

identifications and analysis of the structures of different metals and alloys

in factories,colleges and scientific department.

2. Specification

2.1. Total Magnification

Objective

Eyepiece

5X 10X 20X 50X 80X

5X 25X 50X 100X 250X 400X

10X 40X 100X 200X 500X 800X

12.5X 50X 125X 250X 600X 1000X

16X 64X 160X 320X 800X 1280X

2.2. Objectives

Obj.Mark Obj.Type Magnification

Numerical

Aperture

(N.A.)

Working

Distance

（mm）

System

Colour

Ring

LPL5X/0.13

∞/0 LPL 5× 0.13 16.07 Dry Red

LPL10X/0.25

∞/0 LPL 10× 0.25 18.48 Dry Yellow

LPL20/0.40

∞/0 LPL 20× 0.40 8.35 Dry Light

Green

LPL50/0.70

∞/0 LPL 50× 0.70 1.95 Dry Light

Blue

LPL80/0.80

∞/0 LPL 50× 0.80 0.85 Dry Dark

Blue

Remark: 50×、80× are with spring

2.3. Eyepieces

Eyepiece

Mark Eyepiece Type Magnification Field Dia.

（mm）

Focus

（mm）

WF10×-20 Plan Wide Field 10× φ20 25

WF10×-18 Reticle Eyepiece

（0.1mm） 10× φ18 25

WF16× Plan Eyepiece 16× φ13 15.6

WF12.5× Plan Eyepiece 12.5× φ14 20

5× Huygenian Eyepiece 5× φ20 50

2.4. Stage

Three layer mechanical stage size:180mm×180mm。

X-Y travel range：30mm×30mm；

Division ：0.1mm；

Stage plate size：φ110mm

2.5. Filter set:

Green, Blue, Grey and White grass can be supplied

2.6. Inllumination

12V/20W halogen bulb, adjustable brightness

2.7. Nosepiece

Quadruple nosepiece

2.8. Head

a. Monocular Head

b. Seidentopf Binocular Head

Inclined 45°, Interpupillary Adjustable Distance Is 48-75mm,

Diopter Adjustable Range ±5.

2.9. Coaxial Coarse & Fine Focusing System

Coaxial coarse & fine focusing knobs, coarse stroke 42.4mm/rotation,

actual coarse stroke 12mm;

Fine stroke 0.2/rotation, fine division 0.002mm.

2.10. Anti-fungal systems

Eyepiece and objective is anti-fungal.

2.11. Power Supply

Input：100V～240V，47-63Hz；Fuse：5A 250V（φ5×20）.

3. Installation and Operation

3.1. Installation

3.1.1 Put the body upright on the table steadily.

3.1.2 Put the head into body.

3.1.3 Put out the dust cover from eyepiece tube,and insert available eyepiece into

eyepiece tube.

3.1.4 Turn around the coarse focusing knob to araise the stage.Remove the dust covers

of nosepiece and put the objectives into the holes in nosepiece as per the power of

objectives.

3.1.5 Put the available stage plate into the hole of stage, and insert the clamps into the

small holes of top face of stage.

3.2. Operation

Check the outside power voltage and make sure it is available then put the socket

into pocket.

3.2.1 Turn around the potentiometer then adjust the light to an applicable position.

3.2.2 Select the suitable sample and place it on the stage plate,make sure the observed

face down,and fix the sample

with clips. Turn around the

stage knob to make the sample

into optical path.

3.2.3 Hold the rim of nosepiece

and turn around to put a low

power objective(usually 10×)

into optical path then observe

the specimen with left eyepiece

by left eye and turn coarse

focusing knob to find the image,

then turn slowly fine focusing

knob to make the image clear. Fig.3

After that,put high power objective into the optical path.

3.2.4. Pupil Distance Adjustment and Diopter Adjustment

3.2.4.1 Interpupillary Distance Adjustment (As shown in Fig.3)

Interpupillary distance is different for everyone, so it is necessary to adjust

interpupillary distance before using binocular microscope. Please take the two

eyepiece tubes and turn until the rings observed by two eyes are in superposition

entirely.

3.2.4.2 Diopter Adjustment (As shown in Fig.3)

As focusing for binocular, user should observe right eyepiece by right eye, and make

the image clear by focusing adjustment, then observe the left eyepiece. At the same

time, adjust the diopter ring of the left tube to make the image in left eyepiece clear as

same as the right eyepiece.

3.2.5 Field Iris Adjustment (As shown in Fig.1 and Fig.4)

Turn the field iris ring to make

the image of field iris smaller

than the eyepiece field, and you

can see the image of the field iris.

Make the field iris center nearly

overlap the eyepiece view center

by adjusting the iris center screw.

Make the image of field iris

smaller than eyepiece field and

adjust again, make the field iris

more overlaps the eyepiece field.

Make the field iris bigger until the Fig.4

image of field iris disappears out of the eyepiece field .

3.2.6 Aperture Iris Adjustment (As shown in Fig.1 and Fig.5)

Turn aperture iris ring and change the size

of aperture iris to change the contrast of

the sample.

Put out the eyepiece and observe through

tube, and adjust the aperture iris to make

the aperture iris image fills 70%-80%of

the objective aperture.

After the above points, please choose

available objective, eyepiece and filter as

per the sample, and adjust aperture iris, Fig.5

bright, focusing knobs to get the clear image.

3.2.7 Usage of the tension adjustment ring (Shown in Fig.6)

The tension adjustment ring can adjust the tension of the coarse and fine focusing unit

to prevent the stage from sliding down automatically and to improve the comfort of

operation. Rotation clockwise makes tension decrease, and by contraries, rotation

counterclockwise makes tension increase.

▲Don’t turn lest and right coarse and fine focusing knobs with different

direction with power at the same time, if so, the focusing system will be damaged.

▲Don’t directly pull objective to turn nosepiece when user changes the different

objectives, if so, optical quality of microscope possibly be affected. The right way

is to take the tooth-like part of the nosepiece to turn it, and make the objective

into correct position and into the bright path.

3.2.8 Usage of Digital Camera

3.2.8.1 Get the clear

image, then put out

the eyepiece.

3.2.8.2 Connect the

camera adaptor with

camera, then insert

the adaptor into the

tube, and fix it with

screw.

3.2.9 Usage of

immersion oil

objective

If you must to use oil

objective, it is

necessary that adding

moderate immersion oil Fig.6

between the front lens of

the oil objective and the sample. Please pay attention that air bubble and impurity

can’t be in the immersion oil, otherwise, the image would be affected.

▲After immersion oil used, the oil of specimen and the microscope

surface should be soon cleaned by absorbent cotton, lens paper, gauze

or soft cotton cloth with moderate mixture of pure industrial alcohol and

ether (proportion 1:4) .

4.Maintenance

4.1 Clean microscope

4.1.1 Don’t touch the lens with hand, Dust on lens should be cleaned by soft brush or

absorbent cotton or cleaned by absorbent cotton, lens paper with the mixture of

alcohol and ether (proportion 1:4).

4.1.2 Alcohol and ether all are burnt early, please take them away from fire. Be careful

for turn on and off power.

4.1.3 Don’t clean painted metal and galvanizing metal with organic solvent such as

alcohol, ether or the mixture of the both. Silicon cloth or soft cleaning preparation is

suggested to clean it.

4.1.4 Plastic should be cleaned by soft cloth with clear water.

4.2 Environment of using and placing

4.2.1 Microscope should be used and placed in a cool, dry, non-dust, non-shake and

non-corrosive gases environment.

4.2.2 Microscope should be used in environment of indoor temperature 0°-40°C

and maximum relative humidity 85%.

4.2.3 Removing equipment is suggested to be installed when microscope used in

heavy humidity area to avoid fungus and mist damage instrument.

4.2.4 Please pay attention to prevent microscope from violent shake and vibration in

application and in carrying. Don’t drag it on the surface of worktable to avoid damage

to microscope and worktable.

4.3 Replacement of bulb

4.3.1 Turn off power, and pull out plug.

4.3.2 Wait the bulb become cool.

▲ Please be sure that the bulb is cool, then follow by the nest operations.

4.3.3 Lay aside the microscope reliably, unscrew the knurled thumb screw of the lamp

housing cover on the underside of base.

4.3.4 Pull over the lamp housing cover.

4.3.5 Pull out the bulb should be replaced, hold a new bulb with silk cloth to avoid

fingerprint and dust affect bulb brightness and service life, and insert fully the contact

pins into the bulb socket.

4.3.6 Close the lamp housing cover, and screw the knurled thumb screw.

▲After working for above 10 hours continuously, better cut off the microscope

about 30 minutes.

4.4 Replacement of fuse

4.4.1 Cut off power of microscope, and pull out the plug.

4.4.2 Unscrew fuse cap in the back of base, take out old fuse.

4.4.3 Replace a new fuse, then screw the fuse cap.

5. Troubleshooting

In the period of using MDJ microscope, if there is any trouble occurs,

please referring to the following sheet listed some common

troubleshooting resolve them.

Trouble Causation Remedy

Switch on but

bulb dark

Plug is unreliable Plug in again

Bulb is bad Change bulb

Fuse is broken Change fuse

Bulb is flickering

or brightness

is unsteady

Bulb is unstable Insert it again

Bulb is broken Replacing bulb

Brightness of view

field is not

enough or is uneven

Bulb specification doesn’t

meet

the requirement

Replacing bulb

Brightness isn’t adjusted

correctly

Adjust Rotation

potentiometer

Objective isn’t in correct

position

Make the objective in

correct position

The size of iris aperture is

too small

Adjust the size of

iris aperture

Lens (objective, eyepiece,

Condenser, light collector)

has dust

Clean it

Image isn’t clear

(contras or definition

isn’t enough)

Size of iris aperture

isn’t proper

Adjust the size of

iris aperture

Image observed by

two eyes aren’t in

superposition

entirely.

Interpupilary distance isn’t

adjusted correctly

Adjust

interpupilary

distance according

to two eyes

It is easy for eyes to

be tired during

observing

Diopter isn’t adjusted

correctly

Readjust diopter

Indice

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