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User instructions
Transmitted light school microscope
KERN
OBT-1
Version 1.0
01/2020
OBT-1-BA-d-2010
KERN & Sohn GmbH
Ziegelei 1
D-72336 Balingen
E-Mail: info@kern-sohn.com
OBT 101, OBT 102, OBT 103, OBT 104,
OBT 105, OBT 106
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 Optics OBT 101
- 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 Transmitted light school microscope KERN OBT-1 OBT 101, OBT 102, OBT 103, OBT 104, OBT 105, OBT 106 Version 1.0 01/2020 OBT-1-BA-d-2010...
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Page 3: Table Of Contents
KERN OBT-1 Version 1.0 01/2020 User instructions Transmitted light microscope Table of contents Before use ..................3 General notes ..........................3 Notes on the electrical system ....................3 Storage ............................4 Maintenance and cleaning ....................... 5 Nomenclature ................6 Technical data / Features ............7 Assembly .................. -
Page 4: Before Use
1 Before use 1.1 General notes You must open the packaging carefully, to make sure that none of the accessories in the packaging fall on the floor and get broken. In general, microscopes should always be handled carefully because they are sensitive precision instruments. -
Page 5: Storage
1.3 Storage You should ensure that the device is not exposed to direct sunlight, temperatures which are too high or too low, vibrations, dust or a high level of humidity. The ideal temperature range is between 0 and 40°C and a relative humidity of 85% should not be exceeded. -
Page 6: Maintenance And Cleaning
1.4 Maintenance and cleaning In any event, the device must be kept clean and dusted regularly. If any moisture should be occur, before you wipe down the device you must ensure that the mains power is switched off. When glass components become dirty, the best way to clean them is to wipe them gently with a lint-free cloth. -
Page 7: Nomenclature
2 Nomenclature Example: OBT 106 (Binocular, mechanical stage) OBT-1-BA-e-2010... -
Page 8: Technical Data / Features
3 Technical data / Features Product dimensions: 130x300x310 mm Packaging dimensions: 400x280x195 mm Net weight: 3 kg Gross weight: 5 kg Input voltage: DC 4,5V, 1000mA OBT-1-BA-e-2010... - Page 9 OBT-1-BA-e-2010...
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Page 10: Assembly
4 Assembly 4.1 Microscope head Inside the packaging the microscope head is already mounted but inclined towards the rear. For the correct usage of the microscope the head has to be turned to the front. In case of removing the head completely from the housing (Loosen the Allen screw at first), you should always make sure that you do not touch the lenses with your bare fingers and that no dust enters the apertures. -
Page 11: Operation
(see illustration on the left). Depending on the type of the stage you can move the sample into the beam path manually (OBT 101, OBT 102) or by using the adjustment wheels on the right of the stage (OBT 103-106) (see illustration on the right). -
Page 12: Pre-) Focussing
5.2 (Pre-) focussing When you are observing an object, you must have the correct distance to the objective to achieve a sharp image. In order to find this distance at the beginning (without other default settings of the microscope) place the objective with the lowest magnification in the beam path, look through the right eyepiece with the right eye and turn it slowly using the coarse adjustment knob (see illustration). -
Page 13: Adjusting The Interpupillary Distance
5.3 Adjusting the interpupillary distance (For binocular and trinocular devices) With binocular viewing, the interpupillary distance must be adjusted accurately for each user, in order to achieve a clear image of the object. While you are looking through the eyepieces, use your hands to hold the righthand and lefthand tube housing firmly. -
Page 14: Adjusting The Magnification
5.5 Adjusting the magnification After prefocussing has been carried out using the objective with the lowest magnification (see section 5.2), you can then adjust the overall magnification using the nosepiece, as necessary. By turning the nosepiece you can bring any one of the four other objectives into the beam path. -
Page 15: Adjusting The Illumination
5.6 Adjusting the illumination To make sure that perfect image results are achieved during microscopic observation, it is important that the direction of light of the microscope is optimised. The necessary control elements for this are the height-adjustable condenser with aperture diaphragm. -
Page 16: Using Oil Immersion Objectives
5.7 Using oil immersion objectives The 100x objectives of the OBT-1 series are objectives which can be used with oil immersion (they are always marked with the word “OIL”). Using these generates a particularly high resolution for microscopic images. To use oil immersion correctly, please follow these steps. 1. -
Page 17: Changing The Bulb
6 Changing the bulb Before changing the bulb, the device must be switched off and unplugged. To change the bulb, the housing of the field lens needs to be completely unscrewed. The LED can simply be pulled out of its socket. -
Page 18: Trouble Shooting
8 Trouble shooting Problem Possible causes The mains plug is not correctly plugged in The bulb does not light There is no power at the socket Defective bulb The bulb blows immediately The specified bulb has not been used The aperture diaphragm and/or field diaphragm are not opened wide enough The field of view is dark The condenser is not correctly centred... - Page 19 Problem Possible causes The aperture diaphragm is not opened wide enough The condenser is too low The objective does not belong to this microscope Blurred details The front lens of the objective is dirty An immersion object has been used without Bad image immersion oil Bad contrast...
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Page 20: Service
9 Service If, after studying the user manual, you still have questions about commissioning or using the microscope, or if unforeseen problems should arise, please get in touch with your dealer. The device may only be opened by trained service engineers who have been authorised by KERN. - Page 21 NOTES __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ ________________________________________________________ OBT-1-BA-e-2010...
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