Meiji Techno ML7000 Series User manual

INSTRUCTION MANUAL
FOR ML7000 SERIES
Metallurgical Microscope Innity Optical System

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ML7000 Series Metallurgical Microscope Instruction Manual
Table of Contents
UNPACKING, ASSEMBLY, PREPARATION ............................ 4
Unpacking ............................................................... 4
Assembly................................................................. 4
OPERATION INSTRUCTIONS ................................................. 5
Optical Set-Up and Illumination............................. 5
POLARIZING FACILITY .......................................................... 7
Polarizer .................................................................. 7
Slide-in Analyzer ..................................................... 7
PHOTOGRAPHY AND TELEVISION ........................................ 8
Photography............................................................ 8
Camera Operation .................................................. 8
Television ................................................................ 8
MAINTENANCE AND CARE ................................................... 9
Bulb Replacement.................................................. 9
Care ......................................................................... 9
Cleaning ................................................................10

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ML7000 Series Metallurgical Microscope Instruction Manual
Fine Focus Control
Coarse Focus
Control
Focus Tension
Control Knob
Plug
Microscope Limb
Lamp Centering
Control
Clamp Screw
Binocular Body Inclined 30°
Diopter Adjustment Ring
Eyepieces
KHW10X
Binocular Clamp Screw
Analyzer Control Lever
Vertical Illuminator
Ball-Bearing Objective
Nosepiece
Objectives
Large Scan 4'' x 4''
Mechanical Stage
Stage Controls
Microscope Base
with Built-in Electronic
Transformer and Intensity
Control for 6V 30W
Halogen Light Source
Light Source On/Off and
Intensity Control
ML7000 Series
Metallurgical Microscopes Innity Optical System

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ML7000 Series Metallurgical Microscope Instruction Manual
UNPACKING, ASSEMBLY, PREPARATION FOR USE
Unpacking
All Meiji Techno Microscopes are usually supplied in an expanded polystyrene, 2-part case and this should be
used for storage, possible transport in the future, etc.
Unpack the microscope and its parts carefully. Do not throw away any boxes or packing materials until
contents of the shipping container have been checked against your order and the packing list sent.
Assembly
To mount the vertical illuminator (packed separately), loosen the clamp screw and insert the cone tting of the
illuminator into the recess on the top of the limb and push the cone tting toward and against the spring stop-
per ②gently until the illuminator slips into the position and fasten it with the clamp screw ①.
Now, the binocular or trinocular body can be mounted on the vertical illuminator.
To mount the body, loosen the clamp screw and insert the cone tting of the body into the recess on the top of
the illuminator and fasten it with the clamp screw.
Place the microscope and parts on a sturdy table or desk which gives rm and stable suppot. This should be
located where the atmosphere is as clean as possible avoid the places where ther is excessive dust, moisture,
heat, or fumes.
When in place insert eyepieces in the eyetubes of the binocular body and mount the objectives on the ob-
jective nosepiece, starting with the lowest magnication, then positioning the others to the right of the next
lowest magnication objective.
IMPORTANT!
Before plugging the illuminator into any electric outlet, make sure that transformers and illumination bases
supplied to you are suitable to the current available. (See voltage indication given at the back bottom of the limb.)

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ML7000 Series Metallurgical Microscope Instruction Manual
OPERATING INSTRUCTIONS
Optical Set-up and Illumination
After connecting the illuminator plug to the receptable ③at the back of the microscope limp, please follow as
indicated below:
[1] Turn on the illuminator. Place the specimen slide you wish to examine on the microscope stage and rotate
the nosepiece to bring the 10X objective into position for focus.
[2] Check to make sure that both the eld iris (a) and the aperture iris (c) are fully open.
[3] Focus down on your specimen slide until surface detail can be seen. Adjust the brightness of the built-in
light source, using the intensity control knob, left-hand on the base.
[4] BINOCULAR ADJUSTMENT
Comment: Using a binocular body is much more efcient and less tiring that monocular bodies, but it must be
adjusted correctly. When it is perfectly adjusted the images coming from the two eyepieces are “fused” into
one better image in eyes of the observer.
[5] After you have focused on the specimen, proceed as follows:
Move the sliders on which the two binocular eyepiece tubes are mounted in and out until the distance between
them is exactly the same as the distance between the pupils of the observers eyes (This is the interpupillary distance).

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ML7000 Series Metallurgical Microscope Instruction Manual
[6] When this is done, note the dimensions which is displayed in the window ⑥of the slider. Always remember
to set to this distance when using the microscope. It will be different for different observers, so they will have
to check the best setting for themselves.
[7] To get best focus with both eyes the eyetube heights should be adjusted to take into account the interpupil-
lary distance mentioned [5] and [6] above. First, set the tube Length Adjustment Ring ⑦to the reading which
corresponds to the dimenson shown in the binocular slider window. Do this for the left hand eyepiece only,
now focus to get the sharpest possible image in the left hand eyepiece, using the microscope ne adjustment.
Then turn the right hand Tube Length Adjustment Ring until the image is equally share in the viewer’s right eye.
As these rings function also for dioptric correction the dimension set may not, in this case, exactly correspond
to the window’s indication.
[8] Now turn the eld iris adjustment lever (a) until the eld iris is seen in the eld of view.
[9] Your light source may require centering adjustment if the eld of view seems unevenly illuminated. Cen-
tering controls are located on the side of the light source housing which is built in at the back of the incident
illuminator.
[10] CENTERING ADJUSTMENT
To move the bulb vertically, loosen Clamp Screw ⑧and turn the Backing Plate ⑨clockwise or counterclock-
wise slightly.
To move the bulb horizontally, turn the Lamp Centering Control ⑩
[11] Close down the eld iris (using the lever (a) on the incident illuminator) until the image of the eld iris is in
focus on the specimen. Then open it back out until the image of the iris disappears from the eld of view.

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ML7000 Series Metallurgical Microscope Instruction Manual
[12] Now adjust the aperture iris (using lever (c) on the incident illuminator), closing it down slowly while observ-
ing the eld of view. A point will be reached where there is a sudden distinct drop in brightness of eld of view.
When this occurs, open up the iris slightly, just until the brightness condition reverses, but no more.
[13] This procedure should be followed each time objectives are changed.
[14] The tension control knob is provided to allow the individial user to adjust the focus tension to his/her own
preference. Tension may be increased by turning the knob with a counterclockwise motion. A lighter tension
may be set by turning clockwise.
POLARIZING FACILITY
Polarizer
The Polarizing lter with mount ⑪ is used by inserting in one of the lter ⑫slots on the vertical illuminator
when polarizing microscopy is required.
Slide-in Analyzer
The Analyzer ⑬is mounted in an in-tube slider which moves the analyzer in and out of the optical path and
rotates between 0° and 90° by the lever ⑭. When “in” and at 45 ° position, and with the polarizing lter in
the lter slot, these elements are said to be “crossed” and the eld of view is said to be “extinguished”. In this
condition the eld of view is dark - except for optically active elements in the eld, which rotate the angle of
polarization and thus become visible against a dark background

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ML7000 Series Metallurgical Microscope Instruction Manual
PHOTOGRAPHY AND TELEVISION
Photography
Photographic documentation of microscope visual images is most conveniently achieved by using the trinocu-
lar (photo-binocular) bodies for use with 35mm SLR Camera or PMX100 Large Format Camera.
In the case of the ML series of biological, metallurgical and polarizing microscopes a trinocular body is
equipped with a sliding switch-over beam-splitter component which either (1) allows all of the light to go to the
visual eyepieces or (2) directs 80% of the image-forming light upwards to the lm plane of a 35mm SLR cam-
era, while still sending 20% of the light to the binocular eyepieces
In the system, the MA150/50 or MA150/60 Camera Attachment should be used with the SLR camera of your choice.
Please note that one of the large range of T2 Adaptor Rings suiting to your camera should be ordered separately.
These adaptor rings are intended to compensate for the small differences in effective distance of the lm lane
in your camera - so as to ensure that photographs are optimally sharp, and achieved without wastage of lm in
trial shots and experimentation.
In addition special low-power camera eyepieces (2.5X, 3.3X, and 5X) are available and recommended - these will
give you maximum eld coverage on your specimen while using the convenient and economical 35mm lm format.
Camera Operation
[1] Fix your 35mm SLR camera, T2 Adapter and a photo (camera) eyepiece on the MA150/50 or MA150/60
Camera Attachment, then mounting this assembly on the straight tube of the trinocular body.
[2] Pull out the lever on your trinocular body so as to send the image both to the camera and the visual eyepieces.
[3] Rotate the adjustment ring on the straight tube so as to set correctly for optimum conditions of simultane-
ous visual observation and photography.
Television
For television the MA151/10 C-mount should be used, threaded into your TV camera, then placed and adjust-
ed on straight tube of your trinocular body.
Adjustment can then proceed as per paragraph [3] above. You should understand that the comparatively large
magnication factors inherent in most TV camera/monitor systems will restrict your eld of view (while blowing
up total magnication).
A correct optical set-up and adjustment is of course, crucial to obtaining a good TV monitor image, but keep in
mind that the monitor controls for brightness and contrast adjustment are also important and should also be
experimented with in order to obtain the best monitor image.

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ML7000 Series Metallurgical Microscope Instruction Manual
MAINTENANCE AND CARE
Bulb Replacement
When changing light bulbs in the illuminators, always disconnect the plug from the electrical source. Never
work on the electrical system without rst disconnecting.
The bulb is held in a socket block inserted in the light source housing at the back of the incident illuminator.
Screw ⑧and turn the backing plate ⑨clockwise to the slot. Then pull out the Backing Plate (9) from the light
source housing.
[2] After making certain the old bulb is cool to the touch, remove it by pulling straight out of its socket. Do not
twist as the lamp pins may break off and become lodged in the socket.
[3] Handle the new bulb only with tissue paper or the plastic in which it is wrapped and insert the two pins into
the two holed in the socket.
DO NOT HANDLE WITH BARE FINGERS - BULBS MAY EXPLODE WHEN HEATED IF NOT
HANDLED CORRECTLY.
Care
Always cover the instrument with plastic dust cover provided when the microscope is not in use.
Keep eyepieces in the microscope body at all times in order to prevent dust from falling on the internal optics.
Store the microscope in a safe, clean place when not in use for an extended period of time.

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ML7000 Series Metallurgical Microscope Instruction Manual
Cleaning
Clean exposed lens surfaces carefully with a pressurized air source, soft brush or clean soft cloth. Too much
nger pressure may damage lens coatings.
To remove oil, ngerprints and grease smudges, use the cleaning cloth moistened with a very small amount of
alcohol or xylene.
Immersion oil should always be promptly cleaned from high power oil immerion objectives after every use.
Painted or plastic surfaces should be cleaned only with a cloth moistened with water and a small amount of detergent.
DO NOT ATTEMPT TO MAKE ADJUSTMENTS TO THE INTERNAL OPTICS OR MECHANICS!
If the microscope does not seem to be functioning properly or you have questions about its operation, call your
supplier (or/and authorized repair service) for advice.