lzos MBS-12 User manual

STEREOSCOPIC ZOOM
MICROSCOPE
MBS-12
Maintenance manual

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ATTENTION! The microscope optical head design can be somewhat
differ from those described in this maintenance manual but this does not
influence the performance and quality of the item.
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NOTES:

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1. DESCRIPTION OF USE AND PERFORMANCE
1.1 Purpose
The MBS-12 microscope is intended for observing solid objects in reflected light.
Field of application: botany, biology, medicine, mineralogy, criminalistics, archeology,
mechanical engineering, instrument making industry and other fields of science and
technology.
Zoom optical system of the microscope provides continuous variation of magnification in
scale range 1:10.
1.2 Technical specifications
1.2.1 Magnification, times, in the range from 5 to 102
1.2.2 Linear field of view, mm, in the range from 2.5 to 36
1.2.3 Eyepieces diopter adjustment, Dptr, within range ± 5
1.2.4. Operating distance, mm, not less 79
1.2.5 Illumination source halogen lamp 12V/20W
1.2.6 Overall dimensions in operating state
(disregarding illuminator), mm, no more 195 x 285 x 455
1.2.7 Weight of device, kg, not more 7.5
1.2.8 Gross weight of device in packing cardboard box, kg, not more 10
Information of precious and non-ferrous metals content
Aluminum – 4.53 kg
Brass – 0.31 kg
1.3. Microscope deliverables
1.3.1 Holder with zoom system and head optical lens 1 pc
1.3.2 Binocular attachment 1 pc
1.3.3 Operating table 1 pc
1.3.4 Power supply unit 1 pc
1.3.5 Illuminator 1 pc
1.3.6 Eyepiece 10x2 pc
1.3.7 Eyepiece 10x with scale 1 pc
1.3.8 Eyepiece 20x2 pc
1.3.9 Light filter 1 pc
1.3.10 Clamp 2 pc
1.3.11 Plate 1 pc
1.3.12 Flannel cloth 1 pc
1.3.13 Fused plug VP-1V 1.0 A/250 V 2 pc
1.3.14 Fused plug VP-1V 3.15 A/250 V 2 pc
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9. PACKING REPORT
The stereoscopic zoom microscope MBS-12, serial No____________________ has
b
een duly packed at the Manufacturing factory in compliance with the requirements
prescribed by the technical documentation.
Date of packing ____________________________
Packer is made ________________
43-05

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1.3.15 Halogen lamp MR16 12V/20W 2 pc
1.3.16 Case 1 pc
1.3.17 Maintenance manual 1 copy
1.3.18 Packing box 1 pc
1.4. Design and operating principle
1.4.1. General View of MBS-12 is presented in Fig. 1.
A
Without holder (position 9)
And illuminator (Position 4)
1 – holder with zoom system; 2 – binocular attachment; 3 – zoom magnification handle;
4 – illuminator; 5 – operating table; 6 – power supply unit; 7 – eyepiece; 8 – fixation
ring of illuminator bracket; 9 – illuminator bracket; 10 – clamp; 11 – binocular
attachment fastening screw; 12 – plate; 13 – focusing handle; 14 – optical head fixation
handle; 15 – stopper; 16 – stand.
Б- eyepiece tube; B – Head lens; Г– zoom system body
Fig. 1 – General View of microscope
The imagery in the microscope is provided by an optical system containing of the head
lens B; zoom system installed in the body Г;tube lenses placed in the binocular
attachment 2 and interchangeable eyepieces 7.
A required magnification factor is selected by changing of positioning of movable
components of the zoom system rotating the handle 3 and by positioning of
interchangeable eyepieces.
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5. MAINTENANCE
5.1. In case of transportation or storage of the microscope at low temperatures conditions
and transferring of it to a warm room keep 6 hours before unpacking.
5.2. Avoid of the microscope optical surfaces from dust or dirty. To clean dust use a clear
cambric napkin or a fur brush. To clean dirty use a cambric napkin wetted
by an alcohol.
In non operational time it is recommended to cover the microscope by a polyethylene case
provided with the microscope.
5.3. In case if the halogen lamp is failed keep the safety precautions noted in point 2.3,
disassemble the illuminator as it is noted in Figure 2. At first ease the fixture of the cord 6
b
y help of the bush 7 rounding it against clock hand, pull out the cord with the lamp 1 and
the chuck 4, change the lamp in the chuck, push the cord with the lamp inside the body,
fix the position turning the bush 7, tighten the seat flange 3.
To extend the life time of a halogen lamp there is recommended before setting in the
chuck to clean the contact pins by a soft napkin wetted in an alcohol.
6. STORAGE AND TRANSPORTATION
The microscope must be stored in a room at ambient temperature within the range
from + 5C° to + 40C°, at air humidity not more than 80% and in conditions where there
are no dust air, corrosive vapors and gases.
The microscope can be handled by covered transport means at temperature from -50C°
to +50C°. 7. WARRANTY
The factor of origin guarantees that MBS-10 microscope complies with the technical
specifications IAZU.201131.004TU at condition when all operational instructions,
storage, transportation and handling conditions are implemented.
Warranty period is 24 months from the date of the microscope setting to work
b
ut not more than 30 months from the date of shipment from a factory of origin
warehouse.
8. ACCEPTANCE CERTIFICATE
The stereoscopic zoom microscope MBS-12, serial No.___________________ meets the
technical specifications and has been found fit for service.
QCD Representative
«___» _________________200__

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Optical characteristics of the microscope (approximated values of magnification factors
and field of views) with use of each pair of the interchangeable eyepieces are presented
in Table 1.
Table 1 - Optical characteristics of the microscope
Characteristics of the
microscope Magnification of microscope. Field of view, mm Field of view, mm
Magnification of
eyepiece,
Magnification
of objective part
10x20x10x20x10x20x
0.5
1.0
2.0
3.0
5.0
5
10
20
30
50
10
20
40
60
102
40
20
10
6
4
25
12
6
4
2.5
24 12
Approximate value of interim magnifications is defined as Гm= βlens part x Гeye;
where Гm is the microscope magnification;
βlens part is the lens part magnification (Head lens + zoom system)
Гeye is eyepiece magnification
Values of βlens part are noted in the scale of the handle 3 of magnification changing
1.4.2. Zoom system
IN order to slightly change the microscope magnification in each of two optical tracts
forming a stereo imagery there is designed a zoom system that consists of two
immovable components and two movable ones. Movable components are being shifted
by guiding elements (clutch pins) with a complicated curvilinear profile. Clutch pins are
moved by handles 3; range of shifting is limited by stoppers located inside the body.
Attention!
1. Turn the handles 3 smoothly, do not apply jerky forces in the extreme
positions.
2. Do not turn the handles 3 in mutually antithetic directions.
1.4.3. Head lens
The lens B is attached to the body Гby a screw joint and when in operation shall be
tighten to stop.
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4 OPERATION PROCEDURE
4.1 General instructions
Place an object to the operating table of the microscope. Rotating the optical head per
the stand 16 set an approximate operating distance from an object to the head lens. Fix
the setting of the optical head using the fixation handle 14. Switch on the illumination.
Focus the microscope on an object by rotation of the handle 13 at that the handles of
magnification changing shall be set in a position correspondent to the maximum
magnification (figure 5 on the handle 3).
Move the handle 3 to another extreme position correspondent of the minimum
magnification of the zoom system at that time an image in the extreme position shall be
sharp. Any insignificant defocusing that may be occurred at interim values of the zoom
system magnification are compensated by vertical shifting of the microscope optical
head using the handles 13.
4.2. Operation 10x eyepiece with scale
The eyepiece has the diopter adjustment mechanism. In focal plane of the eyepiece
there is set scale factor with step 0.1mm.
In order to roughly assess a linear dimensions of an object one of the eyepiece tubes of
the microscope shall be set 10xeyepiece with scale. Using the dioter alignment
mechanism of the eyepiece there should be obtained a sharp image of the scale. Then
turning the handle 13 of focusing system one shall align a sharp image of the object. . In
the conversion table 2 there is noted how one scale factor is correspondent to a
dimensional value of an object at the microscope magnification.
Table 2 - Conversion table of the microscope magnifications
Magnifications in approx. numbers
noted on the handles of the zoom
system, times
One scale division 0.1mm corresponds a
measurement on an object
0.5
1
2
3
5
0.2
0.1
0.05
0.03
0.02
In order to determine approximate dimensions of an object (its linear dimensions) it will
suffice to count the number of the division of the scale which are laid in the measured
section of the object and multiply the obtained result by the number indicated in the
conversion. Table corresponding to the magnification of the microscope at which the
measurement is being performed.

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1.4.4. Binocular attachment
Additional (tube inside) lenses and Schmidt prisms are installed in the binocular
attachment 2.
Setting up of an interpupilary distance to fit eye base of an observer is carried out by
bringing together or pulling apart of eyepiece tubes БThe binocular attachment 2 is
fastened to the body Гusing bayonet joint with fixture by a screw 11. In operation
condition the screw shall be tighten to stop.
The interchangeable eyepieces are installed in the eyepiece tubes.
1.4.5 Microscope table
On the stand 16 of the microscope table there is fixed the optical head by the fixation
handle that always should be tighten. which should always be tightened.
The microscope focusing to an object is made by handles 13 turning of the optical head
relative to the microscope table along the guide “dovetail” (Fig. 1).
Attention! Never turn the handle 13 in mutually antithetic directions.
To prevent an accident dropping of the optical head of the microscope on the stand
there is the stopper 15 fixed in the required position using a clamping screw. The table
has a round window where the plate 12, two holes for the clamps 10 and three holes for
the substage ST-12 are installed in. ST-12 is not a deliverable item of this microscope
and is procured separately. One of the side of the plate 12 is painted in white color and
intended for viewing at dark objects, the other one is black that intended for viewing of
light objects.
1.4.6. Illuminator
The illuminator 4 is installed in the slot of the bracket 9 and allows illuminating of an
object with different sides. The bracket 9 is fixed in a proper position with help of screw
ring 8.
A disassembled illuminator is presented in Fig. 2 and consists of lamp 1, body 2, seat
flange 3, chuck 4, spring 5, cord 6, and bush 7.
Figure 2 – Illuminator
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The deliverables of the microscope composes a light filter that is screw jointed to the
seat flange 3of the illuminator.
The illuminator power can be controlled changing lamp power voltage.
1.4.7. Power supply unit
The power of the illuminator lamp is provided through the power supply unit 6(Figure
1) from AC points of 220 V using the cord with the plug of the side ground contact. The
cover of the power supply unit has a connecter of 12V for the illuminator switching on
(by means of two prongs). The side walls of the power supply unit have a toggle switch,
a lamp voltage regulator handle, holders of safety devices (of fused plugs) of 1.0A and
3.15A.
2 SAFETY PRECAUTIONS
2.1 The microscope is intended for indoor operation under conditions of absence of
increased electrical danger. The conditions increasing the mentioned danger are:
a) increased humidity and dustiness of air;
b) current-conducting floor: metal, brick, reinforced-concrete;
c) temperatures above 400C.
2.2 Regularly, before connecting the microscope to the power mains, the safety of the
cord insulation, power supply unit and illuminator should be checked.
2.3 The lamp and the fused plugs (safety devices) are required to be changed when the
illuminator and the power supply unit are switched off.
3 PREPARATIONS FOR USE
If the instrument is delivered indoors from cold, unpack it six hours after bringing it
inside.
After unpacking the instrument is needed to be prepared for the o
p
erating and assemble
the microscope to the status noted in Figure 1.
In doing that the binocular attachment 2 is to be jointed to the body Гof the zoom
system using the crew 11.
The selected eyepieces 10xand 20xare installed in the tubes Б
b
inocular attachment
priory having set the zero diopter value in scale of the eyepiece.
The illuminator 4 is installed in the slot of the bracket 9 and is connected via two prongs
to the power supply unit 6. The plate 12 and two clamps 10 are positioned at the
operating table 5.