OPTO-EDU A13.2603 User manual

A13.26 03
Metallurgical Microscope
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. Specifications .................................................................................................... 2
2. Installation & Operation .............................................................................. 3
3. Maintenance ...................................................................................................... 4
4. Trouble Shooting ............................................................................................... 6

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Fig.1 MIT 100 binocular metallurgical microscope
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1 Seidentopf Binocular head ○ 2 E-pi Unit ○ 3 Screw C
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4 Eyepiece ○ 5 Screw B ○ 6 Nosepiece
○
7 Objectives ○ 8 Stage Plate ○ 9 Stage
○
10 Base ○ 11 Lamp house ○ 12 Aperture Diaphragm Ring
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13 Spot ○ 14 Screw A ○ 15 Coarse and fine focusing knobs
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16 Stage adjusting knobs ○ 17 Potentiometer

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Fig.2 MIT 100 trinocular metallurgical microscope
Purpose:
MIT series upright metallurgical microscope is designed for factories, universities and relative
research institutes. The series microscope with original style, steady structure, convenient
operation and clear image is suitable for observing various metallurgical specimens and IT
material.
1. Specifications
1.1 Total magnifications
Objective
Eyepiece
5X 10X 20X 50X
10X 50X 100X 200X 500X
10X (reticule) 50X 100X 200X 500X
12.5X (optional) 62.5X 125X 250X 625X
16X (optional) 80X 160X 320X 800X

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1.2 Objectives (used with 10X eyepiece)
LPL
Objective
Numerical
Aperture
(N.A.)
Objective
Field
(ф18)
Definition
(μm)
Working
Distance
(mm)
5X 0.13 3.6mm 2.58μm 16.07
10X 0.25 1.8mm 1.34μm 18.48
20X (s) 0.40 0.9mm 0.84μm 8.35
50X (s) 0.70 1mm 0.48μm 1.95
1.3 Mechanical tube length: 160mm,
1.4 Conjugate distance: Infinity
1.5 Head: Seidentopf Binocular or Trinocualr, Inclined 30°, Rotable 360°,
Anti-fungal systems. Interpupillary Adjustable Distance Is 48-75mm,
Diopter adjustable range ±5.
1.6 Nosepiece: Quadplex nosepiece
1.7 Mechanical stage: Size 125mmx115mm
Stage Plate Size: 200mm×140mm
X-Y travel 76mm×35mm
1.8 Focusing systems: Coaxial Coarse and Fine Focusing Knobs, Coarse stroke 22mm,
Fine division 2µm
1.10 Electric components: Input voltage AC100-240V, 47-63Hz
Output voltage DC3-12V
5WLED Warm Lamp
Rotation potentiometer with power switch
Fuse 5A ф5×20
2. Installation & Operation
2.1 Installation
a) Loose the two screws(A), put down the binocular (trinocular) head, then connect the illuminator
with the stand and tighten the two
screws(A).
b) Connect binocular (trinocular)
head with the front of the
illuminator, then tighten the three
screws(B).
c) Connect the power plug of lamp
house with the socket of the base,
and tighten the screws of the socket.
d) Put the eyepiece into the eyepiece tube. Fig.3
2.2 Confirm the voltage is available, then take power.
1) Turn potentiometer, and make the light to the lowest position. Open the power switch, and
adjust the potentiometer to get the available light.
2) Sample placing:

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Put the sample onto the stage plate, turn the stage knob to put the sample into the light path.
3) Put 10X objective into light path, turn coarse focusing knob, observe from right eyepiece with
right eye, then turn slowly fine focusing knob to make the image clear after finding image.
4) Put the other objectives into the light path.
5) Interpupillary distance and diopter adjustment
2.3 Interpupillar distance adjustment:
Interpupillar distance is different for
everyone, so interpupillary distance
should be adjusted before using
binocular microscope. Please take the
two eyepiece tubes to turn until the
bright rings observed by two eyes are
in superposition entirely.
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1 E-pi illuminator unit
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2 Screw
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3 Back of lamp house
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4 Adjusting screw
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5 Left fine knob
○
6 Left coarse knob
○
7 Tension adjusting ring
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8 Fuse
○
9 Socket
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10 Power supply
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11 Potentiometer
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12 Right fine knob
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13 Right coarse knob
3. Maintenance Fig.4
3.1 Clean microscope
3.1.1 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).
3.1.2 Alcohol and ether all are burnt early, please take them away from fire. Be careful for turn on
and off power.
3.1.3 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.
3.1.4 Plastic should be cleaned by soft cloth with clear water.

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3.2 Environment of using and placing
3.2.1 Microscope should be used and placed in a cool, dry, non-dust, non-shake and non-corrosive
gases environment.
3.2.2 Microscope should be used in environment of indoor temperature 0°-40°C and maximum
relative humidity 85%.
3.2.3 Removing equipment is suggested to be installed when microscope used in heavy humidity
area to avoid fungus and mist damage instrument.
3.2.4 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.
3.3 Replacement of bulb
3.3.1 Turn off power, and pull out plug.
3.3.2 Wait the bulb become cool.
▲ Please be sure that the bulb is cool, then follow by the nest operations.
3.3.3 Lay aside the microscope reliably, unscrew the knurled thumb screw of the lamp housing
cover on the underside of base.
3.3.4 Pull over the lamp housing cover.
3.3.5 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.
3.3.6 Close the lamp housing cover, and screw the knurled thumb screw.
▲After working for above 8 hours continuously, better cut off the microscope about 30 minutes.
3.4 Replacement of fuse
3.4.1 Cut off power of microscope, and pull out the plug.
3.4.2 Unscrew fuse cap in the back of base, take out old fuse.
3.4.3 Replace a new fuse, then screw the fuse cap.

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4. Troubleshooting
In the period of using 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 broken 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
isn’t 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
Brightness of view field
isn’t enough or is
Uneven
Lens (objective,eyepiece,
condenser, light collector)
has dust
Clean it
Position of condenser is
too low Higher condenser

MIT100 Binocular Metallurgical Microscope