BestScope BS-3012 Series User manual

BS-3012 Series Stereo
Microscope
User Manual
BS-3012A BS-3012B
It is recommended strongly that you study this manual thoroughly before using the
microscope. Retain this manual in an easily accessible place near the work table for
future reference.

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Contents
1. Before use ...............................................................1
2. Nomenclature .........................................................2
3. Assemblage .........................................................3
4. Operation.................................................................4
5. Configuration chart ..................................................7
6. Technical parameter................................................8
7. Trouble shooting....................................................10

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1. Before use
1-1 Notice
1)Microscope ought to be place in a dry and clean place. Do not expose the microscope
in the sun directly. Avoid high temperature and violent vibration.
2)Microscope is a precision instrument, so handle with care, avoiding impact or abrupt
movement during transportation.
3)To keep the image clear, do not leave fingerprints or stains on the surfaces of the lens.
4)Never turn the left and right focusing knob in the adverse direction at the same time,
otherwise the microscope will be damaged.
1-2 Maintenance
1)All lenses must be kept clean. Fine dust on the surface of the lens should be blown
off with hand blower or wiped off gently with a soft lens tissue; Fingerprints or oil
marked on it should be wiped off with a tissue moistened with a small amount of a 3:7
mixture of alcohol and ether.
2)Never use the organic solution to clean the other surface (especially the plastic
surfaces). If necessary, please choose the neutral detergent.
3)Do not take the microscope apart for fearing that it is damaged.
4)After using, cover the microscope with the dust-cover provided and store it in a dry and
clean place free from moisture to prevent rust.
5)To keep the performance of the microscope, please check it periodically.

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2. Nomenclature
Eyepiece
Diopter adjust
ring
Handle
Focusing knob
Binocular Head
Objective
Incident illumination
Clip
Top light
brightness
adjustment knob
Glass stage
Bottom light brightness
adjustment knob
Stand

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3. Assemblage
Eyepiece shield
Eyepiece
Head
Illumination device
Illumination lock-screw
Head lock-screw
Bracket
Clip
Glass stage
Bracket lock-screw Base

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4. Operation
* The following figures may not be exactly the same as real product, just help you to
understand the microscope operations.
4-1 Use the glass stage
1) Press the glass stage on the sunken place then the other
side of the glass stage will be lifted.(Fig.1)
4-2 Adjust the tightness of the focusing arm
Fig. 1
1) If you want to adjust the tightness of the focusing arm,
you can hold one of the focusing knob and turn another
one to opposite direction to attain a suitable tightness. The
tightness relies on the direction to be turned. The
clockwise direction is tight, otherwise, is loose.(Fig.2 )
2) The suitable position of the tightness can make the
adjustment more comfortable and prevent the focusing
bracket from slipping down by its weight during the
observation. (Fig. 2)
4-3 Set the specimen slide
①
1) Set the specimen in the center of stage plate. If necessary,
clamp the slide with the clips.
2) Turn on the light.
4-4 Adjust diopter and focus
Fig. 3
1) Turn the focusing knob and observe the specimen through
the right eyepiece till the image of the specimen is clear.
2) Observe the specimen through the left eyepiece and
adjust the diopter adjustment ring ①till the image is
clear.(Fig. 3)
4-5 Adjust the interpupillary distance
Fig. 4 Adjust the prism housing along the arrow of the Fig.4 till
the observation is comfortable.

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4-6 Use eyepiece shields
1) For user who does not wear glasses, hold the diopter
adjusting ring to prevent them from rotating and turn the
eyepiece till the eyepiece shield fit the observer well.
2) For user who wears glasses, take the eyepiece shields
off before observation.
①
4-7 Install and remove the optional eyepiece
micrometer
③②1) Turn and remove the mounting ring ②from the
eyepiece.(Fig.5)
2) Clean the eyepiece micrometer ①, and mount it to the
mounting ring with the inscription side downward.
Fig. 5
3) Gently screw the mounting ring to hold the eyepiece
micrometer into the eyepiece till tightening ②securely.
①③4) To remove the eyepiece micrometer, screw down the
mounting ring and take out of the micrometer, and wrap
it in clean soft paper for storage.
②
4-8 Install the illumination device
Fig.6
1) Insert the illumination device①in the bracket with the
protrudent side toward the lock-screw②and tighten
the lock-screw.(Fig.6)
2) Put the plug into the socket of the pillar stand ③.

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4-9 Adjust the brightness of the bottom light
1) Turn the adjustable light knob according to the sign
marked on the base, along the clockwise the
brightness will be increased, otherwise it will be
weakened. (Fig.9)
Fig.7
4-10 Replace the lamps
1) Press the stage on the sunken place then the other
side will be lifted. (Fig.8)
2) Take the lamp out of the lamp socket.
3) Plug a new lamp into the lamp socket thoroughly.
4) Recover the stage plate.(Fig.8)
Fig.8
Note: ①Before replacing the lamps, turn off the power
first.
②Avoid violence while the lamp is plugged into
the lamp socket.
4-11 Replace the fuse
1) Screw the fuse tube out with a screwdriver and pull the
fuse out of the tube ①.
2) Remove the fuse and mount it in an adverse way.(Fig.
9)
①
Fig. 9

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5. Configuration chart
5-1 BS-3012 Series Configuration
Configuration
Model
Parts
Specification
BS-3012A
BS-3012B
WF10X/20mm
●
●
WF15X/15mm
○
○
Eyepieces
WF20X/10mm
○
○
1X/W.D.100mm
○
○
2X/W.D.100mm
●
●
3X/W.D.100mm
○
○
Objectives
4X/W.D.100mm
●
●
0.5X, W.D.: 165mm
○
○
1.5X, W.D.: 45mm
○
○
Auxiliary Objective
2X, W.D.: 30mm
○
○
Viewing Head
Binocular Head, Inclined at 35°, 360° rotatable,
Interpupilary Distance 55-75mm
●
●
Focusing arm
76mm
●
●
Without illumination
●
Stand
With incident and transmitted LED illumination
●
Ring fluorescence
Light
8W, 110V/220V ring fluorescence light
○
○
Box
Inside foam, Outside carton
●
●
Note: “●” Standard outfit, “○” optional.

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6. Technical parameter
6-1 BS-3012 series optical parameter
Eyepiece
Eyepieces (option)
WF10X/20mm
WF15X/15mm
WF20X/10mm
Objective
Working
Distance
(mm)
Mag.
Objective
field
Mag.
Objecti
ve field
Mag.
Objective
field
1X
10X
20
15X
15
20X
11
2X
20X
10
30X
7.5
40X
5
3X
30X
6.7
45X
5
60X
3.3
4X
100
40X
5
60X
3.75
80X
2.5
6-2 Auxiliary objective for BS-3012 series(Used to extend the
magnification)
Auxiliary objectives
Magnification
Working distance (mm)
0.5X
0.5X
165
1.5X
1.5X
45
2X
2X
30
Working distance is fixed regardless of the magnification factor.
Total mag.=Objective mag. X Eyepiece mag.X Auxiliary mag.
Eyepiece field
Diameter of field of view (mm)=
Objective mag. X Auxiliary objective mag.
Photo adapter mag.=Objective mag.X Auxiliary objective mag.X Photo eyepiece
mag.

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6-3 Configuration parameter of BS-3012 series
Model
Parts
BS-3012A/B(1X,2X)
BS-3012A/B(1X,3X)
BS-3012A/B
Objective
magnification
1X, 2X
1X, 3X
2X, 4X
Working distance
100mm
Observation angle
45°
Interpupillary distance
adjustment
55-75mm
Diopier adjustment
Range of single adjustment:±5D
Head
Mount for auxiliary
objectives
Screw hole: M48*0.75
Eyepiece
Field of view
φ20mm
Mount the head
Mount the head in the bracket hole whose diameter isφ76mm
Focusing device
The degree of adjustable by rotating the focusing knob.
Range of single adjustable: 49 mm
Glass stage
Diameter: φ95mm
Main
body
Clips
Put it on the base from top

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7. Trouble shooting
The microscope can’t achieve full performance because of unfamiliar using. This
following table will give some advice to help you make good use of the microscope.
Trouble
Cause
Remedy
Interpupillary distance is not correct
Re-adjust it
Diopter adjustment is not correct
Re-adjust it
1. Double images
Magnification of each eyepiece is
not the same size
Mount the same size
eyepiece
Dirt on the specimen
Clean the specimen
2. Dirt appears in the field of
view
Dirt on the surface of eyepiece
Clean the surface
3. Image is not clear
Dirt on the surface of the objective
Clean the objectives
Diopter adjustment is not correct
Readjust the diopter
4. Image is not clear while the
focus changing
Focus is not correct
Readjust the focus
5. The focusing knob is not
smooth
The focusing knob is too tight
Loosen it to a suitable
position
6. The head slipping down by
itself during observation
The focusing knob is too loose
Tighten it to a suitable
position
7. Incision image appears in the
field of view or of the video view
The pole is not in correct position
Pull or push it to the correct
position
Diopter adjustment is not correct
Adjust the diopter
8. Eyes fell tired easily
Brightness of light is not correct
Adjust the brightness
No power in
Check the connection with
the power supply
The bulb was not insert correct
Insert it correctly
9. Bulb does not work when the
switch is on
Bulb is wrong
Replace with a new one
Use the wrong bulb
Replace with a correct one
10. Bulb is burned out suddenly
The voltage is too high
Control the voltage or use
voltage regulator
Use the wrong bulb
Replace with a correct one
11. Brightness is not enough
The voltage is too low
Increase the input voltage
The bulb will burn out soon
Replace with a new one
12.The bulb flickers or the
brightness is unstable
The bulb was not inserted correctly
Insert it correctly