Magus POL 850 User Manual

Polarizing microscope

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M AG US P OL 8 5 0
POL A R IZ IN G MIC ROS C O P E
U S E R M A N U A L

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Summary of Contents for Magus POL 850

  • Page 1 M AG US P OL 8 5 0 POL A R IZ IN G MIC ROS C O P E U S E R M A N U A L...
  • Page 2 928 E 124th Ave. Ste D, Tampa, FL 33612, USA +1 813 468-3001 contact_us@levenhuk.com Levenhuk Optics s.r.o. (Europe) V Chotejně 700/7, 102 00 Prague 102, Czech Republic +420 737 004-919 sales-info@levenhuk.cz Magus® is a registered trademark of Levenhuk, Inc. © 2006–2024 Levenhuk, Inc. All rights reserved. www.levenhuk.com 20241126...
  • Page 3: Safety Precautions

    Before using the microscope, please read this user manual carefully to study the instrument design, operation modes and procedures, operational limitations, and safety precautions. Due to the continuous improvements in the microscope design, this manual may not reflect minor design changes that do not affect the microscope performance and operation procedures.
  • Page 4 Bulb installation: – Do not touch the glass surface of the bulb with your bare hands. When installing the bulb, wear gloves or wrap the bulb with a cotton cloth. – Use a clean cotton cloth moistened with alcohol-based disinfectant to wipe dirt off the surface of the bulb.
  • Page 5: Table Of Contents

    Calculating the field of view 5 USING OPTIONAL EQUIPMENT Stage attachment Eyepiece with a scale Digital camera Calibration slide with a camera 6 TROUBLESHOOTING 7 SCOPE OF DELIVERY 8 CARE AND MAINTENANCE Replacing the bulb and the fuse Maintenance 9 MAGUS WARRANTY...
  • Page 6: Description

    MAGUS Pol 850 Polarizing Microscope has been designed and tested in accordance with the international safety standards. If properly used, the microscope is safe for the customer’s health, life, property, and the environment. Proper maintenance of the microscope is a prerequisite for its reliable and safe operation.
  • Page 7: Microscope Kit

    Coaxial coarse & fine focusing knobs on both sides Fine focusing scale value: 2μm Focusing mechanism Coarse focusing tension adjusting knob Coarse focusing lock knob Illumination method Transmitted and reflected light Built-in field diaphragm, centerable, height-adjustable Abbe condenser with NA 1.25, Transmitted light illumination with an adjustable aperture diaphragm and a flip-down lens Transmitted light polarizer...
  • Page 8 21 22 Fig. 1. MAGUS Pol 850 Microscope. View from the left 1. Eyepieces 12. Coarse focusing knob 22. Aperture diaphragm 2. Diopter adjustment 13. Coarse focusing lock knob 23. Beam splitter lever 3. Bertrand lens 14. Condenser focus knob 24.
  • Page 9 23 22 21 20 19 Fig. 2. MAGUS Pol 850 Microscope. View from the right 1. Interpupillary distance adjustment scale 13. Transmitted light polarizer 2. Eyepiece tubes 14. Stage centering screw 3. Intermediate attachment 15. Stage 4. Revolving nosepiece 16. Locking screw of the reflected light illuminator 5.
  • Page 10: Components

    COMPONENTS STAND The stand 16 (Fig. 1) has stable ergonomic design. Parts attached to the stand: – revolving nosepiece 4 (Fig. 2) with objectives 5 (Fig. 2) – stage 15 (Fig. 2) – condenser mount (not shown in Fig. 1 and 2) –...
  • Page 11: Eyepieces

    EYE PI ECES The microscope kit includes eyepieces 1 (Fig. 1) and an eyepiece with crosshairs. The eyepieces have long eye relief and are designed to work with or without glasses. Eyepiece diameter: 23.2mm. Eyepiece magnification: 10x. Field of view: 20mm. The 10х...
  • Page 12: Reflected Light Illumination

    REF LECTE D LIGH T IL LU MI NAT IO N The reflected light illuminator is shown in Fig. 3. Fig. 3. Reflected light illumination system 1. Illuminator locking screw 5. Lamp focusing knob 9. Color filters 2. Polarizer 6. Left/right lamp adjustment knob 10.
  • Page 13: Intermediate Attachment

    The aperture and field diaphragms should not be considered as a tool to adjust the image brightness. The brightness should be adjusted by changing the light intensity using the knob 9 (Fig. 2) for adjusting the halogen bulb brightness. Lamphouse The lamphouse 7 (Fig.
  • Page 14 The analyzer 4 (Fig. 5) is introduced into the optical path until it is fixed and removed by moving it to the rightmost position. The analyzer is rotated by the ring 6 (Fig. 5). Rotation angles in the range of 0–360° are measured on the scale on the disk 6 (Fig. 5) with a graduation value of 1° and vernier scale 5 (Fig.
  • Page 15: Transmitted Light Illumination

    T RANS M ITTED LI GHT I LLUM INAT I O N The transmitted light illumination system is given in Fig. 7. 1. Condenser locking screw 2. Flip-down lens of the condenser 3. Collector 4. Transmitted light polarizer 5. Locking screw of the transmitted light polarizer 6.
  • Page 16: Unpacking And Assembling

    3 UNPACKING AND ASSEMBLING 1. Unpack the microscope and check the scope of delivery using Section 7 of the User Manual. 2. Take out the stand and place it on a stable work table, remove packaging and dust cover. 3. Take out the reflected light illuminator. Install the illuminator on the microscope stand and secure it with an Allen wrench.
  • Page 17: Brightfield Observation Procedure

    BRIGHTFIELD OBSERVATION PROCEDURE SWITCHING ON T H E I LLU MI N ATI O N Before switching on the ON/OFF switch, make sure that the input voltage of the microscope power supply matches the local mains voltage. If not, do not switch on the microscope. Improper input voltage may result in a short circuit or fire. Turn the ON/OFF switch 2 to "–"...
  • Page 18: Adjusting The Eyepiece Tubes

    ADJ U STI N G THE E YE P I ECE T UB ES While looking through the right eyepiece (with your left eye closed), bring the specimen into focus. While looking through the left eyepiece (with your right eye closed) and not touching the focusing knobs, bring the specimen into sharp focus in the left eyepiece by rotating the diopter adjustment ring.
  • Page 19: Centering The Stage And Objectives

    – Rotate the knob 2 to carefully move the condenser up and down and place the condenser to the operating position. In the operating position of the condenser, the edges of the octagon-shaped image of the closed field diaphragm are sharp and the diffracted blue-green color at the edge of the diaphragm is directed beyond the edge of the diaphragm and not into the field of view.
  • Page 20: Transmitted Light Observations With A Polarizer

    Fig. 14. Centering the stage and objectives Use the two centering screws 3 of the stage, located on both sides, to move the target point to the center and align it with the center of the crosshairs. Make sure that the target point remains in the center of the crosshairs when you rotate the disk. If necessary, repeat all the operations described above until the target point set in the crosshairs remains centered when the stage is rotated.
  • Page 21: Observation Of Interference Patterns (Conoscopy)

    It is recommended to study the sample birefringence based on the observation of interference colors and determine its syngony based on the observation of the extinction character with the closed aperture diaphragm of the condenser and the maximum possible brightness of illumination. Compensators are used to determine the optical properties of minerals with weak birefringence.
  • Page 22: Reflected Polarized Light Observations

    – Bring the specimen surface into sharp focus. Moving the object, bring the cleanest section into the field of view. – Reduce the opening of the field diaphragm 2. – Verify the centering of the field aperture image relative to the center of the crosshairs. If necessary, center the image with two centering wrenches, having previously installed them in the sockets 7.
  • Page 23: Calculating The Total Magnification

    CALC ULATING T H E TOTA L M AG NI F I CAT ION The total magnification is the eyepiece power multiplied by the objective power. For example, if the eyepiece is 10х/22mm, and the objective is 40х/0.70, the total magnification of the microscope is 10х40 = 400х.
  • Page 24: Digital Camera

    We recommend entering the obtained data in a size chart: Objective magnification Eyepiece division value Using these data to determine the actual linear size of the specimen, you just need to count the number of divisions of the eyepiece scale aligned with the area of the specimen being measured, and multiply this number by the scale division value specified in this table.
  • Page 25: Calibration Slide With A Camera

    Adjust it as follows: – Set the beam splitter lever 5 to the eyepiece position. While observing the specimen through the eyepieces, find a distinctive point in the field of view (an easily identifiable target, such as point S in Fig. 19а), move the specimen on the stage so that the point is in the center of the field of view, as shown in Fig.
  • Page 26: Troubleshooting

    6 TROUBLESHOOTING Potential problems and remedies (Table 4): Problem Cause Remedy ELECTRI CAL COMP ONENTS The ON/OFF switch is off Switch on the ON/OFF switch The halogen bulb is damaged Replace the halogen bulb The fuse has blown Replace the fuse The circuit board connector has poor Have the connector repaired by a qualified No illumination in the field...
  • Page 27: Scope Of Delivery

    MECH ANI CAL C OMPONENTS The coarse focusing tension Adjust the coarse focusing tension adjusting knob is loosened, causing adjusting knob The image does not remain the revolving nosepiece to lower sharp during observation spontaneously The coarse focusing knob The coarse tension adjusting knob Loosen the tension of the coarse is too tight to rotate is overtightened...
  • Page 28: Care And Maintenance

    Calibration slide Optional Mechanical attachment Optional ACCESSORIES AND SPARE PARTS Set of Allen wrenches Allen wrench 12V/30W halogen bulb Fuse Microscope power cord Reflected light illuminator power cord Dust cover User manual CARE AND MAINTENANCE REPL ACING T HE B U LB AN D T H E FU SE Before replacing the bulb or fuse, turn the ON/OFF switch to "0"...
  • Page 29: Maintenance

    6. Periodic inspection: the microscope should be regularly inspected and serviced to maintain its performance. MAGUS WARRANTY MAGUS provides a 5-year international warranty from date of purchase (valid for the entire life of the instrument). The Levenhuk company warrants the product to be free from defects in materials and workmanship. The Seller warrants that the MAGUS product you have purchased meets specification requirements, provided that the Buyer complies with terms and conditions of transport, storage, and operation of the product.
  • Page 30 www.magusmicro.com...

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