Drawell B Series User manual

User Manual
Please read operating manual before installation and operation.
Technical Specifications are subject to change without notice
Drawell International Technology Limited
Shanghai Drawell Scientific Instrument Co.,Ltd
Add :Suite 1506,Lane581 XiuChuan Rd.,PuDong New Area,Shanghai,China
Tel : [phone]
Fax : [phone]
Web : www.drawell.com.cn
Email : [email protected]

To ensure the safety and obtain satisfactory performance, please study this
operation instruction thoroughly before your operation.
Biological Microscope
Operation Instruction
BSeries

1
Contents
1.Purpose ………………………………………………3
2.Specifications …………………………………………3
3.Installation ……………………………………………5
4.Operation ……………………………………………6
5.Maintenance …………………………………………11
6.Troubleshooting ……………………………………14
7.Outfits ………………………………………………16

2
Seidentopf Binocular Head
Quadplex Nosepiece
Objective
Clamp
Condenser Up-down Knob
Coaxial Coarse And
Electric Base
Eyepiece
Main Body
Stage
Stage Moving Konb
Condenser
Handle of Iris Aperture Power Switch And
Light Collector
Fig.1 B200 Binocular Biological Microscope
Fine Focusing Knob
Light Controller
Condenser Up-down Knob
Coaxial Coarse And
Electric Base
Eyepiece
Nosepiece
Objective
Fine Focusing Knob
Monocular Head
Main Body
Clamp
Stage
Condenser
Light Controller
Power Switch And
Light Controller
Fig.2 B100 Monocular Biological Microscope

3
1. Purpose
B series biological microscope is designed for teaching, clinical verify. The
series microscope with original style, steady structure, convenient operation and
clear image is suitable for observing various biological specimens, and mostly
applied in school, college, hospital and family.
2. Specifications
2.1 Total magnifications
Objective
Total Magnifications
Eyepiece
4X
10X
40X
100X
10X
40X
100X
400X
1000X
16X
64X
160X
640X
1600X
2.2 Objectives
Objective
Numerical
Aperture
(N.A.)
Objective Field
Resolving
Power
Working Distance
Objective
Field
Number
ф18
Field
Number
ф20
Achromatic
Plan
4X
0.10
4.5mm
5mm
2.8µm
13mm
16mm
10X
0.25
1.8mm
2mm
1.1µm
6.3mm
2mm
40X (S)
0.65
0.45mm
0.5mm
0.42µm
0.44mm
0.66mm
100X
(Oil) (S)
1.25
0.18mm
0.2mm
0.22µm
0.3mm
0.42mm
2.3 The other specification
2.3.1 Mechanical tube length: 160mm
2.3.2 Conjugate distance: 195mm
2.3.3 Head: Monocular, Inclined 30°, Rotable 360°, Eyepiece can be fixed,
Anti-fungal systems.

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Seidentopf binocular head 30°, Rotable 360°,
Interpupillary adjustable distance is 55-75mm,
Diopter adjustable range±5, Anti-fungal systems.
2.3.4 Nosepiece: Quadplex nosepiece
2.3.5 Mechanical stage: Size 142mm×134mm
X-Y travel 50mm×70mm
2.3.6 Focusing systems: Coaxial coarse and fine focusing knobs, Coarse stroke
22mm,
Fine division 2µm, Condenser up-down range 25mm
2.3.7 Condenser: Abbe condenser, N.A. 1.25, Adjustable aperture,
Aperture center is adjustable.
2.3.8 Mirror: Mirror diameterф52mm (optional)
2.3.9 Filter: Built in blue filer, ф38.5mm
2.3.10 Anti-fungal systems: Eyepiece and objective is anti-fungal, anti-fungal
system built in head.
2.3.11 Electric components: Input voltage AC85-265V, 50/60Hz
Output voltage DC1.2-6V
6V/20W halogen lamp
Rotation potentiometer with power switch
Fuse 2A ф5×20

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3. Installation
B series microscope is packed integrate, and it is convenient for installation.
Open the package carton, and insert eyepiece into the eyepiece tube of the head
(eyepiece for monocular microscope has been inserted before packing). If
objectives don’t be fixed, please take objectives out from objectives packing box,
and drive them into the holes of nosepiece orderly and tightly according to the
times.
Take out the oil bottle and dust cover, and place it properly for convenient use.

6
4. Operation
4.1 Electric components
Make sure the supply voltage meets the instrument’s requirement, then plug in it.
Rotation potentiometer with power switch used by the instrument is for
protecting lamp.
4.2 Placing specimen (Shown in Fig.3)
Please place specimen on the stage, and the face with cover glass should be up,
then clip it with clamp. Clipping specimen should be careful in order to avoid
spoiling glass. Place specimen on the stage levelly, and make it into optical path
by adjusting vertical moving knob and horizontal moving knob.
4.3 Condenser (Shown in Fig.3)
4.3.1 Condenser up-down
Turn the condenser up-down knob to adjust the distance between condenser
front and the specimen, and change the equal illumination to obtain the best
brightness.
Mirror
Bracket
Mirror Base
Fig.4 Mirror
Clamp HandleSpecimenClamp Condenser
Vertical
Moving Knob
Horizontal
Moving Knob
Handle of
Iris Aperture
Condenser
Up-down Knob
Fig.3 Stage And Condenser

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4.3.2 Iris aperture adjustment
Stir the handle of iris aperture of condenser to
adjust size of iris aperture for adjusting the
contrast of the specimen.
4.4 Interpupillary distance and diopter
adjustment (Shown in Fig.5)
4.4.1 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.
▲B100 monocular microscope don’t need to be adjusted.
4.4.2 Diopter adjustment
As focusing for binocular, user should observe right eyepiece with right eye, and
make the right eyepiece clear by focusing adjustment, then observe the left
eyepiece, at the same time, adjust the diopter ring of the left eyepiece tube to
make the image of left eyepiece clear as same as the right eyepiece.
4.5 Focusing adjustment
Usually 10X objective should be used for focusing adjustment first. Take 10X
objective into bright path, then observe the specimen with right eyepiece by
right eye and turn coarse focusing knob to find the image, then turn slowly fine
focusing knob to make the image clear.
All objectives of our microscope are precisely adjusted, and approximate clear
image should be found with the other objectives after getting the clear image
Diopter Ring
Eyepiece
Interpupillary
Distance Scale
Fig.5 Interpupillary Distance
Adjustment And Diopter Ring
Eyepiece Tube

8
with 10X objective. If the image isn’t enough clear with the other objectives,
please turn fine focusing knob slightly to find the satisfactory image.
▲Don’t turn left 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.
4.6 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.
4.7 Usage of immersion oil objective
The 100X objective of B series microscope can be used for observation even if
without immersion oil. However, adding moderate immersion oil between the
front lens of 100X objective and the cover glass of specimen can make the
image clearer. Please pay attention that air bubble and impurity can’t be in the
Fig.6 Coarse A F F nd ine ocusing
Left Coarse
Left Fine
Right Fine
Right Coarse
Tension
Focusing Knob
Focusing Knob
Focusing Knob
Adjustment Ring
Focusing Knob
Knobs And TensionAdjustm ent Ring

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immersion oil, otherwise, the image would be affected.
First of all, take 40X objective which has been focused well out from bright path,
then take 100X objective into bright path. At this time, nosepiece or stage
moving knob should be turned slightly, and also slightly turn fine focusing knob
to clear away the air bubble of immersion oil, otherwise, the air bubble would
affect the image badly.
▲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)
▲Standard thickness 0.17mm cover glass should be chosen when high times
objective used, and thickness error should be within 0.01mm, otherwise, image
definition would be affected.
4.8 Mirror (Shown in Fig.4)
Mirror of B series microscope is optional, and it is used when electrical power
isn’t supplied.
Mirror doesn’t be suggested as illumination source when 100X objective used.
Take light collector down from base, then take mirror on base. Turn mirror to
make reflecting face to the light source, and make reflecting face and horizontal face
as 45°approximately to make the light to specimen as possible. The mirror has two
sides, one is a plane mirror, and the other one is a concave one. Concave mirror
is suitable for large-area outside light source, such as bright sky.
4.9 Points of attention after using
4.9.1 Power of microscope should be turned off after using, and the plug should

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be pulled down. If immersion oil used, please clean objective and specimen soon.
Finally, cover microscope with dust cover.
4.9.2 Please take eyepiece and objectives out from microscope if user will stop
using it for a long time, and place eyepiece and objectives into drier with drying
agent. Cover microscope with dust cover.
5.Maintenance

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5.1 Clean microscope
5.1.1 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).
5.1.2 Alcohol and ether all are burnt easily, please take them away from fire. Be
careful for turn on and off power.
5.1.3 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.
5.1.4 Plastic should be cleaned by soft cloth with clear water.
5.2 Environment of using and placing
5.2.1 Microscope should be used and placed in a cool, dry, non-dust, non-shake
and non-corrosive gases environment.
5.2.2 Microscope should be used in environment of indoor temperature 0°-40°C
and maximum relative humidity 85%.
5.2.3 Removing humidity equipment is suggested to be installed when
microscope used in heavy humidity area to avoid fungus and mist damage
instrument.
5.2.4 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 microscope and worktable.

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Uscrew Knurledn
Lamp Adjustment Knurled
Pull Over
Bulb
Housing Cover,
Replace Bulb,
Close Cover
The Lamp
Cover
Thumb Screw
Thumb Screw
Fig.7 Replacement of Bulb
5.3 Replacement of bulb (Shown in Fig.7)
5.3.1 Turn off power, and pull out plug.
5.3.2 Wait the bulb become cool.
▲ Please be sure that the bulb is cool, then follow by the operations.
5.3.3 Lay aside the microscope reliably, unscrew the knurled thumb screw of the
lamp housing cover on the underside of base.
5.3.4 Pull over the lamp housing cover.
5.3.5 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.
5.3.6 Close the lamp housing
cover, and screw the knurled
thumb screw.
▲After working for above 10
Power WireFuse Cap
Fig.8 Replacement of Fuse

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hours continuously, better cut off the microscope about 30 minutes.
5.4 Replacement of fuse (Shown in Fig.8)
5.4.1 Cut off power of microscope, and pull out the plug.
5.4.2 Unscrew fuse cap in the back of base, take out old fuse.
5.4.3 Replace a new fuse, then screw the fuse cap.
5.5 Stop to use microscope, please cut off power, cover the dust cover, and place
it in a cool and dry environment.
5.6 B-LED biological microscope
5.6.1LED illumination specification:
Available LED using time: Above
10,000 hours
Working Voltage: 3.1V
Maximal working electrical current:
30mA
Maximal power dissipation: 120mW
Luminous intensity: Above 6cd
5.6.2LED bulb replacement:
Cut off power: Pull out the power plug off socket, and confirm power cut off
Put out bulb cover: Put out the bulb cover off the up-cover of the baseLED
bulb replacement: Pull up the LED bulb with plug and out off the bulb socket,
then insert the replacing bulb with its plug into the bulb socket
Bulb Cover
LED bulb
Bulb plug
Bulb socket

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6.Troubleshooting
In the period of using B series microscope, if there is any trouble occurs, please
referring to the following sheet listing some common troubleshooting，and
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.
Lens (objective, eyepiece,
condenser, light collector) has
dust.
Clean it
Position of condenser is too low
Higher condenser
Image isn’t clear
(contrast or definition
isn’t enough).
Cover glass of specimen
doesn’t meet the requirement
Use required thickness
cover glass (0.17mm)
Cover glass of specimen isn’t in
up direction
Place specimen correctly
Surface of objective lens is
dirty (especially it is easy for the
front lens of 40X
objective to dip in immersion
oil)
Clean it
Immersion oil isn’t used for
100X objective (oil)
Use immersion oil
Immersion oil doesn’t meet
the requirement
Use immersion oil
supplied by us
There is bubble in immersion oil
Clear the bubble way
Size of iris aperture isn’t
proper
Adjust the size of iris
aperture
Position of condenser is too low
Readjust the position of
condenser

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One side of image is dark
or image is moving as
focusing.
Objective isn’t in correct
position.
Make the objective in
correct position.
Specimen isn’t placed
correctly
Place specimen levelly on
stage and clip it with
clamp.
Objective touches
specimen as changing
low times objective to
high times objective.
Cover glass of specimen isn’t
in up direction.
Place specimen correctly
Cover glass doesn’t meet the
Requirement.
Use required thickness
cover glass (0.17mm)
Image observed by two
eyes aren’t in
superposition entirely.
Interpupillary distance isn’t
adjusted correctly.
Adjust interpupillary
distance according to two
eyes.
It is easy for eyes to be
tired during observing.
Diopter isn’t adjusted
correctly
Readjust diopter

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B Series Biological Microscope Outfits
Items
Specification
B104
LED
B203
LED
B204
LED
B203
LED
TR
B204
LED
TR
Eyepiece
WF 10X-18 mm
●
●●
●●
●●
●●
WF 10X-18 mm(With Pointer)
○
○
○
○
○
WF 16X-13 mm
○
○○
○○
○○
○○
WF 10X-18 mm(Reticule 0.1 mm)
○
○
○
○
○
Achromatic
Objective
4X
●
●
●
10X
●
●
●
40X(S)
●
●
●
100X/1.25 (Oil) (S)
●
●
●
20X
○
○
○
60X (S)
○
○
○
Plan Objective
4X
●
●
10X
●
●
40X/0.65 (S)
●
●
100X/1.25 (Oil) (S)
●
●
20X
○
○
60X(S)
○
○
Monocular Head
Inclined 30°, Rotatable 360°
●
Seidentopf
Binocular Head
Inclined 30°,Rotatable 360°,
Interpupilary Distance 50-75mm
●
●
Seidentopf
Trinocular Head
Inclined 30°,Rotatable 360°,
Interpupilary Distance 50-75mm,
Light Distribution: 20:80
●
●
Nosepiece
Quadplex
●
●
●
●
●
Focusing Knobs
Coaxial Coarse and Fine Focusing Knobs
●
●
●
●
●
Mechanical Stage
Stage Size:120mmX115mm,
Travel:50mmX70mm
●
●
●
●
●
Condenser
Abbe N.A. 1.25(Iris Diaphragm)
●
●
●
●
●
Dark Field Ring
Available For 4X-40X Objective
○
○
○
○
○
Polarizing
Attachment
Analyzer /Polarizer
○
○
○
○
○
Mirror
Plano-concave mirror
○
○
○
○
○
C-mount
1X/ 0.5X （Focus Adjustable）
○
○
Base
LED Illumination Systems（non-rechargeable）
●
●
●
●
●
LED Illumination Systems
（rechargeable）
○
○
○
○
○
6V 20W Halogen Lamp,
Wide Voltage: 100V-240V
○
○
○
○
○
Note: "●"In Table Is Standard outfits, "○" Is Optional Accessories.
Packing Size: 337mm×242mm×417mm Gross Weight: 7 kgs Net Weight: 5.5 kgs
Technical Specifications are subject to change without notice.

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Drawell International Technology Limited
Shanghai Drawell Scientific Instrument Co.,Ltd
Add : Suite 1506,Lane581 XiuChuan Rd.,PuDong New Area,Shanghai,China
Tel: [phone]
Fax: [phone]
Web : www.drawell.com.cn
Email : [email protected]