Cofemo BK-POL Operation Manual

To ensure the safety and obtain satisfactory performance, please
study this operation instruction thoroughly before your operation.

BK-POL

Polarizing Microscope

Operation Manual

Contents

1.Purpose

……………………

1

2.Specification

……………………

1

3.Parts Name

……………………

3

4.Installation

……………………

5

5.Operation

……………………

6

6.Maintenance

……………………

6

7.Troubleshooting

……………………

8

Outfits

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10

-1-

1.Purpose

BK-POL polarizing microscope is for the field of metallurgy, geology and

minerals.

BK-POL polarizing microscope is with gypsum(λ), mica (λ/4)sample,

quartz wedge and attachable mechanical stage. It is an ideal

instrument that has perfect function and quality.

2. Specification

2.1 Total Magnification

Objective

Eyepiece

4X

10X

20X

40X

60X

10X

40X

100X

200X

400X

600X

2.2 Objectives (Non-stress plan objective)

Magnification

N.A.

Thickness of the glass cover

4X

0.10 10X

0.25

0.17

20X(S)

0.40

0.17

40X(S)

0.65

0.17

60X(S)

0.80

0.17

2.3 Eyepiece

Type

Magnification

View Field Diameter (mm)

Cross Eyepiece

10X

20/18

Normal Eyepiece

10X

20/18

-2-

2.4 Mechanical Tube Length: ∞

2.5 Head: Seidentopf binocular (trinocular) head 30°,

Interpupillary adjustable distance is 50-75mm.

Diopter adjustable range ±5,

Anti-fungal systems.

2.6 Intermediate: 360°part division for analyzer, 2°30’per scale, lock

system

Bertrand Lens (center adjusting)

Gypsum(λ), mica (λ/4)sample, quartz wedge

2.7 Nosepiece: Quadplex or quintuple nosepiece (center adjusting),

nosepiece spanner.

2.8 Revolving Round Stage: Diameter Φ158mm, 360° part scale, 6’per

scale.

2.9 Focusing System: Coaxial coarse and fine focusing knobs, coarse

stroke 22mm.

Fine division 2µm, condenser up-down range 22mm

2.10 Condenser: Abbe condenser, N.A. 1.25, adjustable aperture,

aperture center can be adjustable.

360°part division for polarizer, 5° per scale, lock system

2.11 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

2.12 Filter: Blue (Amber, green, neutral filter optional)

-3-

3. Parts Name

Tube Fixing Hole

Eyepiece

Trinocular Head

C-mount Fixing Screw

Head Thumb Screw

Diopter Adjuster

Bertrand Lens Slip

Complementary Inlet

Analyzer

Centering
Nosepiece

Revolving Round Stage

Condenser

Polarizer

Field Diaphragm
Revolver

Aperture
Diaphragm
Centering

Condenser Thumb
Screw

Main

Body

Fixing

Screw

Main

Bod

Stage
Centering
Screw

Right Coarse
Focusing

Right Fine

Focusing Knob

Potentio

-meter

Clamp