Omax M8244 Manual de usuario

User Manual

Dual Head Binocular

Compound Microscope

Model M8244

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Table of Contents

i. Caution……..……………………………………………………………1

ii. Care and Maintenance……….………………………………….….…2

1. Component Illustration………………………….…………………..…3

2. Installation ……………………………………………………………...4

3. Operation……………………….………………………….…………....6

4. Specifications…………………….…………………………………......8

5. Troubleshooting Guide….................................................................9

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i. Caution

1. Find the “UP” sign and place the Styrofoam container on your table or bench so

that the arrow upward. Open the shipping carton carefully to prevent any

accessory, i.e. objectives or eyepieces, from dropping and being damaged.

2. Do not discard the molded Styrofoam container. The container should be retained

should the microscope ever requires reshipment.

3. Keep the instrument out of direct sunlight, high temperature or humidity, and dusty

environments. Ensure that the microscope is located on a smooth, level and firm

surface.

4. If any specimen solutions or other liquids splash onto the stage, objective or any

other component, disconnect the power cord immediately and wipe up the spillage.

Otherwise, the instrument may be damaged.

5. Important: the lamp, lamp housing and adjacent parts will become very hot. Do

not touch these parts until they have completely cooled. Never attempt to handle a

hot halogen bulb.

6. All electrical connectors (power cord) should be inserted into an electrical surge

suppressor to prevent damage due to voltage fluctuations.

7. For safety when replacing the halogen lamp or fuse, be sure the main switch is off,

unplug the power cord, and only replace the halogen bulb after the bulb and the

lamp house has completely cooled.

8. Confirm that the input voltage indicated on your microscope corresponds to your

line voltage. The use of a different input voltage other than that as indicated will

cause severe damage to the microscope.

9. Important: The two thumb screws on the viewing head block are for locking the

two viewing heads. If you want to remove the viewing head, turn the thumb screw

counter clockwise while holding the viewing head with another hand to prevent it

falling off.

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ii. Care and Maintenance

1. Do not attempt to disassemble any component including eyepieces, objectives or

focusing assembly.

2. Keep the instrument clean; remove dirt and debris regularly. Accumulated dirt on

metal surfaces should be cleaned with a damp cloth. More persistent dirt should be

removed using a mild soap solution. Do not use organic solvents for cleansing.

3. The outer surface of the optics should be inspected and cleaned periodically using

an air stream from an air bulb. If dirt remains on the optical surface, use a soft cloth

or cotton swab dampened with a lens cleaning solution (available at camera

stores). All optical lenses should be swabbed using a circular motion. A small

amount of absorbent cotton wound on the end of a tapered stick makes a useful

tool for cleaning recessed optical surfaces. Avoid using an excessive amount of

solvents as this may cause problems with optical coatings or cemented optics or

the flowing solvent may pick up grease making cleaning more difficult. Oil

immersion objectives should be cleaned immediately after use by removing the oil

with lens tissue or a clean, soft cloth.

4. Store the instrument in a cool, dry environment. Cover the microscope with the

dust cover when not in use.

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1Components Illustration

1. Eyepiece

2. Diopter Ring

3. Eyepiece Tube

4. Viewing Head H

5. Nosepiece

6. Objective

7. Slide Holder

8. Mechanical Stage

9. Condenser

10. Condenser Focus Knob

11. Light Collector

12. Base

13. Viewing Head V

14. Thumb Screw V

15. Thumb Screw H

16. Viewing Head Block

17. Thumb Screw

18. Body

19. Tension Collar

20. Coarse Focus Knob

21. Fine Focus Knob

22. Stage Knobs

23. Intensity Dial

24. Power Switch

12 24

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2Installation

2.1 Installation of the binocular dual view head

1) Loosen the thumb screw (17) on the top of the body (18) and remove the plastic

cover.

2) Remove the cap on the dovetail of the binocular viewing head block (16).

3) Insert the dovetail of binocular viewing head block (16) into the socket of the body

(18); tighten the thumb screw (17).

Caution: Do not release the head from your hand grip until you are sure the head is

installed securely.

2.2 Installation of the eyepieces

Remove the protective caps from the eyepiece tubes (3). Insert the eyepieces (1) into

the eyepiece tubes (3).

2.3 Installation of the objectives

1) Adjust the coarse focus knob (20) until the mechanical stage (8) is at its lowest

position.

2) Install the 4x objective into the nosepiece. Then in a clock-wise direction, rotate the

nosepiece and install each succeeding higher magnification objective.

Note: When changing the objective magnification, rotate the

objective nosepiece until you hear a “click” sound. This ensures the

objective is centered in the optical light path.

2.4 Installation of glass filter

1) Swing out the filter holder under the condenser (9).

2) Insert the filter into the holder, swing the holder in.

2.5 Changing the halogen bulb

1) Turn the power off and disconnect the power cord.

2) Allow some time to cool down the lamp.

3) Turn over the microscope on its side; find the bulb compartment at

the bottom.

4) Open the cover of the bulb compartment by loosening the thumb

screw. Take out the dead bulb and insert the new bulb. Be sure

the pins on the bulb are completely inserted into the lamp socket.

5) You may also loosen the two screws on the cover to adjust the

position of the bulb to get centered and even brightness.

6) Screw the cover on.

Caution: Before you turn over the microscope, be sure to take the

eyepieces off and be certain that the viewing heads are securely

locked by the thumb screws.

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2.6 Replacing the fuse

1) Turn off the power and disconnect the power cord.

2) Turn over the microscope on its side; find the fuse at the bottom of the base.

3) Turn the fuse holder counter-clockwise to take it off, insert new fuse, and then turn it

on clockwise.

Caution: Before you turn over the microscope, be sure to take the eyepieces off and be

certain that the head is securely locked by the thumb screw.

2.7 Installing the mirror (optional, your model may not have one)

1) Unplug the power cord.

2) Screw off the light collector Lens (11) on the base.

3) Screw the black disc onto the base and then insert the mirror into

the hole at the center of the black disc. You may try to get

reflected ambient light on either side of the mirror with different

angles for best result.

Note: The mirror is only used when there is a power failure or you are in the field and no

power is available.

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3Operation

3.1 Adjusting illumination

1) Connect the power cord and turn on the power switch (24).

2) Rotate the variable intensity dial (23) to increase or decrease the brightness.

3.2 Placing specimen

1) Place the slide on the mechanical stage (8).

2) Use the slide holder (7) to gently secure the slide. Turn the X and Y adjustment knobs

(22) to position the specimen for viewing.

Caution: Be sure not to allow an objective to touch a specimen slide when changing

objectives.

3.3 Focusing

1) With the 10x objective in position, raise the mechanical stage using the coarse focus

knob until the specimen is close to the objective

2) Turn the coarse focus knob until the specimen is in focus.

3) Then use the fine focus knob to obtain a sharp image. You may now switch to

another magnification objective.

Tips: To prevent your specimen slide from making contact with an objective, raise the

stage to its highest position without contacting the 100x objective, then tighten the upper

limit mechanical stage lever.

3.4 Condenser focusing

Turn the condenser focus knob (10) to raise or lower the condenser. The condenser

is raised when using high magnification objectives and lowered when using low

magnification objectives.

Note:

The centering of the condenser and the light axis of the objective are factory adjusted.

Do not attempt re-adjustment.

The highest position of the condenser has been factory adjusted. Do not attempt

re-adjustment.

3.5 Adjusting iris diaphragm

Slide the Iris diaphragm lever left or right to adjust the

aperture size.

Note: The iris diaphragm is designed to adjust the aperture

size, not to adjust brightness.

3.6 Adjusting interpupillary distance

While observing with both eyes, hold the left and right eye

tubes, slide in and out the tubes. The interpupillary distance is correct when the left

and right fields of view converge completely into one image.

3.7 Adjusting eyepiece diopter

1) Using the 10x objective and your right eye only, observe your specimen through the

Iris Diaphragm Lever

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eyepiece and bring it into focus by adjusting the focus knobs (20,21).

2) Then observe the specimen with your left eye only through the left eyepiece. If the

specimen is not in focus, rotate the diopter ring (2) until a sharp image is obtained.

3) Since both sides are adjustable, you may also do the above in the opposite way, in

other words, left eye first and right eye second.

3.8 Adjusting tension knob

The tightness of the tension adjustment collar (19) has been pre-set at the factory. If

the mechanical stage (8) drops by itself, rotate the tension adjustment collar (19)

located inside the focus knob (20) on the power switch side until the tension is in

maintained.

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4Specifications

General

Model M8244

Total Magnification 40X, 64X, 100X, 160X, 400X, 640X, 1000X, 1600X

Viewing Head Dual viewing head, binocular, inclined 45º, swiveling 360º

Interpupillary distance 55-75mm

Adjustable diopter on both eyepiece tubes

Eyepieces 2 pair of wide field eyepieces WF10X/18

Objective Tube Length 160mm

Nosepiece Revolving quadruple

Objectives Achromatic 4X, 10X, 40X (spring), 100X (spring, oil)

Condenser Abbe, NA=1.25, w/ iris diaphragm and filter holder

Rack and pinion adjustment

Focus Mechanism Coaxial coarse and fine focusing knobs on both sides w/ limit lock

Minimum fine focusing adjustment at 0.002mm, range 28 mm

Stage Large double layer mechanical stage

Dimension: 5-1/2” x 5-1/2” (140mmx140mm)

Movement range: 3” x 2” (75mm X 50mm)

Illumination Transmitted: 6V/20W, Halogen, Variable intensity

Power Supply AC 110V, 60HZ

Net Weight 12.6 lb (5.7 kg)

Eyepieces

Designation Magnification Field of View Focal Length

Wide Field 10X 18mm 24.94mm

Objectives

Magnification Numerical

Aperture Thickness of

slide cover Focus Working

Distance Working

Mode

4X 0.10 0.17mm 31.04mm 37.5mm Dry

10X 0.25 0.17mm 17.13mm 7.316mm Dry

40X(S) 0.65 0.17mm 4.65mm 0.632mm Dry

100X(S, Oil) 1.25 0.17mm 2.906mm 0.198mm Oil

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