KERN OSF-4 User Instructions
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KERN OSF-4 User Instructions

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User instructions
Stereo microscope
KERN
Version 1.0
01/2015
OSF-4-BA-e-1510
OSF-4
OSF 430, OSF 431, OSF 434, OSF 435
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-mail: info@kern-sohn.com
Tel: +49-[0]7433- 9933-0
Fax: +49-[0]7433-9933-149
Internet: www.kern-sohn.com

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Summary of Contents for KERN OSF-4

  • Page 1 KERN & Sohn GmbH Ziegelei 1 Tel: +49-[0]7433- 9933-0 D-72336 Balingen Fax: +49-[0]7433-9933-149 E-mail: info@kern-sohn.com Internet: www.kern-sohn.com User instructions Stereo microscope KERN OSF-4 OSF 430, OSF 431, OSF 434, OSF 435 Version 1.0 01/2015 OSF-4-BA-e-1510...

  • Page 3: Table Of Contents

    KERN OSF-4 Version 1.0 01/2015 User instructions Stereo microscope Table of contents Before use ..................3 General notes ..........................3 Notes on the electrical system ....................3 Storage ............................4 Maintenance and cleaning ....................... 5 Nomenclature ................6 Basic data ..................8 Assembly ..................

  • Page 4: Before Use

    If you are using an extension cable, then the mains cable you use must be earthed. When carrying out any procedures whereby you come into contact with the electrical system of the device, such as, for example, changing the bulb, only carry out these procedures when the power is disconnected. OSF-4-BA-e-1510...

  • Page 5: Storage

    In most cases, if dust and dirt gets inside the optical unit of a microscope this can cause irreversible errors or damage. The best way to store accessories which consist of optical elements, such as, for example, eyepieces and objectives, is in a dry box with desiccant. OSF-4-BA-e-1510...

  • Page 6: Maintenance And Cleaning

     Special cleaner for optical lenses  Special optical cleaning cloths  Bellows  Brush When handled correctly and checked regularly, the microscope should give many years of efficient service. Should repairs still be necessary, please contact your KERN dealer or our Technical Department. OSF-4-BA-e-1510...

  • Page 7: Nomenclature

    2 Nomenclature Using the OSF 430 as an example OSF-4-BA-e-1510...
  • Page 8 Special features of OSF 434, OSF 435 The focus dial has a coarse adjustment knob and a fine adjustment knob OSF-4-BA-e-1510...

  • Page 9: Basic Data

    WF 10x Ø 20 mm Ø 20 1x / 2x / 3x mechanical (transmitted light) 1W LED (reflected light); 0,21W LED OSF 435 Binocular WF 10x Ø 20 mm Ø 20 1x / 2x / 4x mechanical (transmitted light) OSF-4-BA-e-1510...

  • Page 10: Assembly

    Additional optional attachments:  The eye cups supplied with the microscopes can be fitted to the eyepieces. (see section 5.6) OSF-4-BA-e-1510...
  • Page 11 Assembled stereo microscope OSF-4-BA-e-1510...

  • Page 12: Operation And Functionality

    5.3 Adjusting the magnification As the KERN OSF-4 series covers stereo microscopes (without zoom), we will describe how to set the magnification using the integrated and rotating objective. For the devices in this series, you can select between two (OSF 430, OSF 431) or three (OSF 434, OSF 435) different magnification factors at any time.

  • Page 13: Dioptre Adjustment And Focussing

    8. In order to get the highest level of accuracy when adjusting the focus, you should repeat steps 4-7. 9. In this way, the object being observed will be in focus on any magnification setting. OSF-4-BA-e-1510...

  • Page 14: Adjusting The Stand

    On one hand, this function can help to make it easier to adjust the focus and on the other hand it can prevent the microscope head from slipping down unintentionally. In this way you can avoid possible damage which could occur if the objective lens and the object being observed should collide. OSF-4-BA-e-1510...

  • Page 15: Using Eye Cups / High Eye Point Eyepieces

    In order to maintain hygiene, we would therefore recommend that you clean the eye cups regularly (e.g. with a damp cloth). Eye cups High Eye Point eyepiece (identified by the glasses symbol) OSF-4-BA-e-1510...

  • Page 16: Lighting Control

    The lighting units which are suitable for devices of the OSF-4 series, are goose neck lighting units (see figure). These are available as LED as well as halogen versions and also have an on/off switch or different controller.

  • Page 17: Changing The Bulb

    / Ø 74.5 mm ● ● ● ● OZB-A4814 External For information on external lighting units, please see the Kern Optics main catalogue, from illumination page 68 and visit our website www.kern-sohn.com ● = Standard configuration ○ = Option OSF-4-BA-e-1510...

  • Page 18: Trouble Shooting

    The torque of the focus wheels is set too high The microscope head slips down The torque of the focus wheels is set too low while you are viewing the object Eyes get tired easily The dioptre adjustment is not correct The brightness adjustment is not correct OSF-4-BA-e-1510...

  • Page 19: Service

    The device may only be opened by trained service engineers who have been authorised by KERN. 10 Disposal The packaging is made of environmentally-friendly materials, which you can dispose of at your local recycling centre.

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