MAGUS Metal D630 Metallurgical Digital Microscope

1 DESCRIPTION

PURPOSE

The MAGUS Metal D630 Metallurgical Digital Microscope is designed for observing the microstructure of metals and alloys, semiconductor materials, quality control of paint coatings, and studying other opaque objects. This universal microscope is suitable for confined spaces and allows height adjustment to meet production line requirements. The reflected light illuminator supports brightfield and polarization microscopy techniques. It is widely used in metallurgical, engineering, aerospace, nuclear, and energy industries, as well as in research laboratories and technical universities.

SPECIFICATIONS (TABLE 1)

Camera Specifications

* Not included in the kit, available on request.

** The magnification of the microscope can be increased by using additional (optional) eyepieces and objectives. The manufacturer reserves the right to make changes to the product range and specifications without prior notice.

MICROSCOPE KIT

The microscope kit includes the following main components:

• Stand with base and stage
• Microscope body with focusing mechanism and revolving nosepiece
• Reflected light illuminator
• Trinocular head
• Lamphouse
• Set of objectives and eyepieces
• Power supply unit
• Digital camera
• Set of spare parts and accessories
• Packaging
• User manual

See Section 7 of the User manual for a full kit contents. The general view of the microscope is given in Fig. 1.

2 COMPONENTS

MICROSCOPE BODY

The microscope body (9) is mounted on the stand (6), which is secured on the base (15). The focusing mechanism is located inside the microscope body. A mount on the front of the microscope body is used to install the revolving nosepiece (17) and the reflected light illuminator (3).

FOCUSING MECHANISM

The focusing mechanism features coaxial coarse and fine focusing knobs, and a coarse focusing tension adjusting knob, all mounted on the same axis. Focusing on the specimen is achieved by adjusting the height of the revolving nosepiece. Coarse focusing is done by rotating knob (11), and fine focusing by rotating knob (12) for precise adjustments. The fine focusing scale value is 2µm. The coarse focusing tension adjusting knob (10) allows adjustment of the coarse focusing tension for comfortable user experience, preventing spontaneous lowering of the revolving nosepiece. To prevent damage to the focusing mechanism, do not turn the left/right coarse/fine focusing knobs in opposite directions, and do not rotate the coarse focusing knob past its limit.

MICROSCOPE HEAD

The trinocular head (7) provides visual observation of the specimen image and is mounted on the reflected light illuminator (3). The interpupillary distance is adjusted by rotating the eyepiece tubes (48-75mm). The microscope head is inclined at 30°. Eyepiece diameter is 30mm. A diopter adjustment (8) on one eyepiece tube compensates for ametropia. An imaging system can be installed in the trinocular tube (5) using a C-mount adapter. A lever on the right side of the microscope body switches the light path to the trinocular tube (positions 100/0 and 0/100).

EYEPIECES

The microscope kit includes eyepieces (2) with long eye relief, suitable for use with or without glasses. Eyepiece diameter is 30mm. Eyepiece magnification is 10x with a 22mm field of view and 10mm eye relief. Optional eyepieces include 10x/22mm with a scale, 12.5x/14mm, 15x/15mm, 20x/12mm, and 25x/9mm.

REVOLVING NOSEPIECE

The revolving nosepiece (18) accommodates five objectives (17). Objectives are changed by rotating the knurled ring until the objective clicks into place. Do not rotate the revolving nosepiece by holding the objectives.

OBJECTIVES

The objectives are designed for infinity-corrected tube length with a parfocal distance of 45mm and a linear field of view of 22mm. They have a long focal length. Each objective is marked with its correction type, magnification, numerical aperture, tube length, and color code. The specifications are as follows:

If objectives are damaged, repair is recommended at the service center. Objectives are for imaging through air; do not use immersion oil.

REFLECTED LIGHT ILLUMINATION

The illumination system allows for Köhler illumination setup. The 30W halogen bulb is centered on three axes. The reflected light illuminator (3) has built-in field and aperture diaphragms, which are adjusted by rotating rings on the illuminator.

STAGE

The XY mechanical stage (14) is fixed on the microscope base and moved using knobs (16). Stage size is 185mm×140mm, with a moving range of 35mm×30mm.

LAMPHOUSE

A connection adapter on the illuminator side is for mounting the halogen lamphouse (21). The lamp is centered using knobs (22). Ensure the power supply is off when removing the lamphouse. The lamphouse gets hot during operation; do not cover it or place objects on its surface to prevent fire.

POLARIZER/ANALYZER SET

The microscope includes a polarizer/analyzer set (built-in analyzer (20) and removable polarizer (20)) for polarized light observations. The polarizer rotates 0–360°.

COLOR FILTERS

A round slider with color filters (4) is included, offering five positions: yellow, green, blue, frosted glass, and a free slot. These filters help adjust color reproduction, improve color balance, and enhance image contrast and brightness.

3 UNPACKING AND ASSEMBLING

The assembly procedure is illustrated in Fig. 2.

Assembly Steps:

1. Unpack the microscope and verify the scope of delivery using Section 8.
2. Place the stand with the base and body of the microscope (1) on a stable work table, removing packaging and dust cover. Adjust the microscope body height by loosening the locking support collar knob (2) (Fig. 2b), raising/lowering the collar, and then loosening knob (4) to move the microscope body (3). Tighten lifting mechanism knobs to prevent unintentional lowering.
3. Mount the reflected light illuminator (2) and lamphouse (5), securing the illuminator with an Allen wrench and connecting the lamphouse and power cord.
4. Attach the trinocular microscope head (3) and eyepieces (4), ensuring they are tightly seated.
5. Connect the power supply unit (6) and its power cord.
6. Ensure all components are securely mounted.
7. Sort supplied accessories and tools for easy access.
8. Keep the packaging for potential transportation.

4 BRIGHTFIELD OBSERVATION PROCEDURE

SWITCHING ON THE ILLUMINATION

Before switching on, verify that the microscope power supply voltage matches the local mains voltage to prevent short circuits or fire. Turn the ON/OFF switch (1) to the 'I' position to light the bulb. Adjust brightness with knob (2) for comfortable viewing. Avoid prolonged use at maximum brightness to extend bulb life. Reduce light intensity to minimum before switching off.

USING THE BEAM SPLITTER LEVER

Check the beam splitter lever (1). When pulled out, the light path is directed to the trinocular tube.

PLACING THE SPECIMEN

Place the specimen (3) on the stage (4). Adjust the image using knobs (1 and 2) so the observed section is under the objective. The stage has a coaxial XY control system; knob (2) controls Y-axis movement, and knob (1) controls X-axis movement. The stage moving range is 35mm×30mm.

FOCUSING ON THE SPECIMEN

Use the coarse and fine focusing knobs for focusing, preferably with the 10x objective. Rotate the coarse focusing knob (2) upwards until the objective is close to the specimen. Slowly lower the objective while looking through the eyepiece until the specimen image appears. Stop rotating the coarse knob. Use the fine focusing knob (1) for a crisp image. The coarse focusing knob tension is adjustable via knob (3); clockwise rotation loosens tension, counter-clockwise tightens it.

ADJUSTING THE EYEPIECE TUBES

To compensate for ametropia, set the diopter adjustment ring (1) on the left eyepiece tube to '0'. Look through the right eyepiece (left eye closed) and focus. Then, look through the left eyepiece (right eye closed) and adjust the diopter ring (1) for sharp focus without touching the focusing knobs.

Adjust the interpupillary distance by rotating the eyepiece tubes (1) until a single circular image is visible when looking with both eyes (Fig. 8a, b).

CENTERING THE LIGHT SOURCE

The light source is typically centered by the manufacturer, but re-centering may be needed after transportation. Follow these steps:

1. Place a white paper sheet (approx. 40mmx50mm) on the stage and secure it with clips (1) (Fig. 9a).
2. Remove an objective and place the empty slot into the optical path (Fig. 9b).
3. Open the field and aperture diaphragms. A bright spot showing the filament will appear on the paper (Fig. 9f).
4. If the filament image is blurry, adjust the collector position with knob (7).
5. If the filament image is offset, use the lateral alignment knob (5) and vertical alignment knob (6) to center the light source.

SETTING UP KÖHLER ILLUMINATION

Proper illumination is crucial for image quality. Köhler illumination offers high resolution, artifact removal, and even illumination.

Setup Steps:

1. Place the 10x objective in the optical path.
2. Open the aperture diaphragm (3) and close the field diaphragm (1). A light spot will be visible (Fig. 10).
3. If the light spot is offset, use centering screws (2) with Allen wrenches to align the field diaphragm center with the field of view center (Fig. 10b).
4. Open the field diaphragm until its image fills the field of view (Fig. 10c).

The aperture diaphragm is pre-centered. Adjust its opening based on magnification: increase for low magnification, decrease for high magnification.

USING THE COLOR FILTERS

A round slider with color filters is installed on the reflected light illuminator. Choose the filter color to match the specimen and microscopy technique (brightfield or polarization). Rotate the slider to set the desired position. Color filters can smooth out optical distortions.

POLARIZED LIGHT OBSERVATIONS

Polarized light observations are used to study anisotropic materials like crystals and liquid crystals, useful in geology, mechanics, metallurgy, and electronics. The microscope kit includes a polarizer/analyzer set. To enable polarization observations, place the polarizer (2) and analyzer (1) into the optical path. Adjust the polarizer for a dark field of view and set light intensity for clear visibility of fragments. Reduce brightness after observations to prevent visual impairment.

CALCULATING THE TOTAL MAGNIFICATION

Total magnification = Eyepiece power × Objective power. For example, 10x eyepiece × 50x objective = 500x.

CALCULATING THE FIELD OF VIEW

Field of view = Eyepiece field number / Objective magnification. For example, 22mm / 50x = 0.44mm. A stage micrometer is used for accurate field of view determination.

5 USING OPTIONAL EQUIPMENT

EYEPIECE WITH A SCALE

An eyepiece with a scale or reticle allows comparative analysis of linear dimensions. The scale is installed in the field diaphragm plane of the 10x eyepiece. Use a stage micrometer (calibration slide) to determine linear dimensions in millimeters or microns. The calibration slide has a 0.01mm scale division. Calibrate the eyepiece scale for each objective by focusing the calibration slide scale and aligning scales. Determine the value of one eyepiece division using the formula E = TL/A, where E is eyepiece division value, T is stage division value (0.01mm), L is the number of stage micrometer divisions, and A is the number of eyepiece divisions. Enter data in a size chart. Measure specimen dimensions by counting eyepiece divisions and multiplying by the scale division value.

CALIBRATION SLIDE WITH A CAMERA

The calibration slide (stage micrometer) calibrates image analysis software for measurements. In calibration mode, capture images of the micrometer scale with each objective magnification, indicating the known distance. This establishes the image scale in actual units. Calibration involves placing the slide, selecting the objective and camera resolution, capturing a contrast image of the scale, using the 'Calibrate' function, entering the actual value, and saving the calibration factor. Any measurement unit can be selected later, and results will be recalculated.

6 TROUBLESHOOTING

ELECTRICAL COMPONENTS

OPTICS AND IMAGE REPRODUCTION

MECHANICAL COMPONENTS

7 SCOPE OF DELIVERY

The scope of delivery is detailed in Table 5.

MICROSCOPE

MAIN COMPONENTS

• Stand with base and stage
• Microscope body
• Reflected light illuminator
• Lamphouse
• Trinocular microscope head
• Revolving nosepiece
• Power supply unit
• Polarizer/analyzer set
• Color filter slider

REPLACEABLE PARTS

• Infinity plan achromatic objective: PL L 5x/0.12 WD 26.1mm
• Infinity plan achromatic objective: PL L 10x/0.25 WD 20.2mm
• Infinity plan achromatic objective: PL L 20x/0.40 WD 8.8mm
• Infinity plan achromatic objective: PL L 50x/0.70 WD 3.7mm
• Infinity plan achromatic objective: PL L 40x/0.60 WD: 3.9mm (Optional)
• Infinity plan achromatic objective: PL L 60x/0.70 WD: 2.1mm (Optional)
• Infinity plan achromatic objective: PL L80x/0.80 WD: 1.2mm (Optional)
• Infinity plan achromatic objective: PL L 100x/0.85 (dry) WD 0.4mm (Optional)
• 10x/22mm eyepiece with eye relief (2)
• 10x/22mm eyepiece with a scale (1) (Optional)
• 12.5x/14mm eyepiece (2) (Optional)
• 15x/15mm eyepiece (2) (Optional)
• 20x/12mm eyepiece (2) (Optional)
• 25x/9mm eyepiece (2) (Optional)
• C-mount camera adapter (1)
• Eyecups (2)
• Monitor (1) (Optional)
• Calibration slide (1) (Optional)

ACCESSORIES AND SPARE PARTS

• Head locking screw (1)
• Set of Allen wrenches (1)
• Allen wrench (1)
• 12V/30W halogen bulb (1) (In the lamphouse)
• Fuse (1)
• Microscope power cord (1)
• Reflected light illuminator power cord (1)
• Dust cover (1)
• User manual (1)

DIGITAL CAMERA

• Digital camera (1)
• USB cable (1)
• Flash drive with drivers and software (1)
• User manual (1)

8 CARE AND MAINTENANCE

REPLACING THE BULB AND THE FUSE

Before replacing the bulb or fuse, turn the ON/OFF switch (1) to '0' (off) and unplug the power cord. Wait approximately 30 minutes for the bulb to cool down.

1. Replacing the bulb

• Unplug the power cord from the connector.
• Loosen the lock screw with a screwdriver and remove the back cover of the lamphouse (Fig. 16b).
• Remove the faulty lamp (2) and install a new one.

Use a cloth when installing the bulb to avoid fingerprints, which shorten its life. Install the cover on the lamphouse and secure it with a screw. Connect the power cord, turn the ON/OFF switch (1) to '-' position, and center the lamp as described previously.

2. Replacing the fuse

The fuse is in the connector. Loosen the screw (1) of the fuse socket, remove the faulty fuse, and install a new one. Plug the power cord into the AC outlet and turn the ON/OFF switch to '-' position to check the fuse for proper operation.

MAINTENANCE

1. After use, switch off the power supply. If the microscope will not be used for an extended period, switch off the power supply.
2. Keep the microscope clean. Do not install the dust cover until the microscope has completely cooled down and dried.
3. Cleaning lenses: Remove dust with a soft brush. For significant contamination, use a soft cloth moistened with a mixture of alcohol and ethyl ether (20-30% alcohol, 70-80% ethyl ether) or a special O-xylene solution. Wipe lenses from the center outward (Fig. 18).
4. Cleaning surfaces: Wipe with a clean soft cloth. Significant contamination can be removed with a neutral detergent. Do not use organic solvents (e.g., alcohol, ethyl ether) on the microscope stand, as this may damage the coating.
5. Cleaning the camera: Blow off dust and small particles with a soft brush, then clean the surface with a soft, clean cloth moistened with alcohol or ether.
6. Storage: When not in use for a long time, switch off the power, wait for the lamp to cool, cover with a dust cover, and store in a dry, ventilated, clean place away from acids, alkalis, or steam to prevent mold. Applying rust-preventive coating to moving parts is recommended.
7. Periodic inspection: Regular inspection and servicing are recommended to maintain performance.

9 MAGUS WARRANTY

MAGUS provides a 5-year international warranty from the date of purchase. Levenhuk warrants the product to be free from defects in materials and workmanship. The Seller warrants that the MAGUS product meets specification requirements, provided the Buyer complies with transport, storage, and operation terms. The warranty period for accessories is 6 months from the date of purchase.

For more information on warranty terms and conditions, visit www.magusmicro.com.

For warranty service, contact your nearest Levenhuk representative office.