KERN Optics OBE 1, User Instructions

Page 1: ...o kern sohn com Tel 49 0 7433 9933 0 Fax 49 0 7433 9933 149 Internet www kern sohn com User instructions Transmitted light laboratory microscope KERN OBE 1 OBE 101 OBE 102 OBE 103 OBE 107 OBE 108 OBE 109 OBE 111 OBE 112 OBE 113 OBE 104 OBE 110 OBE 114 Version 1 1 05 2016 ...

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Page 3: ...ces 11 4 4 Condenser 11 5 Operation 12 5 1 Getting started 12 5 2 Pre focussing 13 5 3 Adjusting the interpupillary distance 14 5 4 Dioptre adjustment 14 5 5 Adjusting the magnification 15 5 6 Adjusting the illumination 16 5 7 Using rechargeable batteries 17 5 8 Using eye cups 18 5 9 Using oil immersion objectives 19 6 Changing the bulb 20 7 Changing the fuse 20 8 Using optional accessories 21 8 1...

Page 4: ...an additional risk of triggering an electric shock 1 2 Notes on the electrical system Before connecting to a mains power supply you must make sure that you are using the correct input voltage The information to select the correct mains cable is located on the device on the rear of the product directly above the connection socket You must comply with this information If you do not comply with these...

Page 5: ...e microscope is not being used you should cover it with the enclosed dust protective cover When doing this the power supply is stopped by switching off at the main switch and unplugging the mains cable If the eyepieces are being stored separately the protective caps must be fitted to the tube connectors In most cases if dust and dirt gets inside the optical unit of a microscope this can cause irre...

Page 6: ...s these are highly flammable substances You must therefore keep it away from naked flames and electrical devices which can be switched on and off and only use it in well ventilated rooms However organic solutions of this type should not be used to clean other components of the device This could lead to damage to the paint finish To do this it is sufficient to use a neutral cleaning product You cou...

Page 7: ...OBE 1 BA e 1611 6 2 Nomenclature ...

Page 8: ...7 OBE 1 BA e 1611 Rear view ...

Page 9: ...cular WF 10x Ø 18 mm Achromatic 4x 10x 20x 40x 3W LED Transmitted OBE 109 Finite Binocular WF 10x Ø 18 mm Achromatic 4x 10x 20x 40x 3W LED Transmitted Accu OBE 110 Finite Trinocular WF 10x Ø 18 mm Achromatic 4x 10x 20x 40x 3W LED Transmitted OBE 111 Finite Monocular WF 10x Ø 18 mm Achromatic 4x 10x 40x 100x 3W LED Transmitted OBE 112 Finite Binocular WF 10x Ø 18 mm Achromatic 4x 10x 40x 100x 3W LE...

Page 10: ...9 OBE 1 BA e 1611 ...

Page 11: ...OBE 1 BA e 1611 10 ...

Page 12: ...magnification for both eyes These are already placed onto the tube connectors and each is fixed with a small silver screw under the eyepiece on the tube connectors so that they are turnable but you cannot pull them out of the tube When changing the eyepieces you must loosen these screws and once the new eyepiece is fitted then they must be re tightened You should always make sure that you do not t...

Page 13: ... time your eyes are not immediately subject to a high level of light The next step is to place an object holder with the sample on the angle table To do this the cover glass must be facing upwards You can fix the object holder to the table using the slide holder see illustration on the left To move the sample into the beam path you must use the adjustment wheels on the right of the angle table see...

Page 14: ... soon as an image is recognisable no matter how sharp then you should only adjust the focus using the fine adjustment knob Adjusting the torque of the coarse and fine adjustment knob Next to the left adjustment wheel for the coarse and fine adjustment knob there is a ring which you can use to alter the torque of these wheels Turning it in a clockwise direction reduces the torque and turning it in ...

Page 15: ...rcular image then the interpupillary distance is set correctly 5 4 Dioptre adjustment For binocular and trinocular devices The eye strengths of each eye of the microscope user can often be slightly different which in daily life has no consequences But when using a microscope this can cause problems in achieving precise focussing You can use a mechanism on the left tube connector dioptre adjustment...

Page 16: ... objectives you should use the silver ring above the objectives see illustration When rotating the nosepiece you must always make sure that the objective which is about to be positioned in the beam path does not touch the object holder This can lead to significant damage to the objective lens We recommend that you always check from the side to make sure that there is sufficient leeway If this shou...

Page 17: ...ture diaphragm of the condenser to find the very best compromise between contrast and resolution for the microscopic image For the objective with the lowest magnification the lever of the aperture diaphragm should be placed almost completely on the right side limit so that the opening of the diaphragm is very small The higher the magnification of an objective the larger the opening should be selec...

Page 18: ... microscopes Specification of the batteries Battery type LR6 AA Capacity 1300 mAh Nominal voltage 1 2 V Charging time ca 5 h Operation time with ideal light intensity ca 3 h Total operation time ca 8 h The batteries are being charged as soon as the power connection is established using the mains plug The first charging time must be approx 10 hours Please consider the above mentioned data if there ...

Page 19: ...sses symbol on the side They are also marked in the item description by an additional H example HSWF 10x Ø 23 mm When fitting the eye cups make sure that the dioptre setting is not moved We would therefore advise that you hold the dioptre compensation ring on an eyepiece with one hand while you fit the eye cup with the other Before using the microscope users who wear glasses must remove the eye cu...

Page 20: ... Lower the specimen stage and position the 100x objective in the beam path 3 Bring the specimen stage or object slide to the objective very slowly until there is slight contact 4 Observe the object The object slide and objective must not be pressed against each other The oil constitutes the contact layer If the contact is made too jerky there is a chance that existing air bubbles in the oil cannot...

Page 21: ...nnection point of its cable Now the new module has to be mounted in the same why as the original one After the bulb holder has been replaced in the underside of the device and the screws replaced the bulb replacement procedure is complete 7 Changing the fuse The fuse housing is on the rear of the microscope below the mains power supply socket With the device switched off and unplugged you can pull...

Page 22: ...two points to take into account when subsequently using the polarisation unit The aperture setting of the condenser must be at the maximum lever completely on the left side For its starting position the polariser must be turned to the position in which you can see the highest level of darkness in the field of view without object slide 8 2 Dark field unit There is the following way to carry out dar...

Page 23: ...rew A camera which has a C mount thread is then screwed on top of the adapter We recommend that you first adjust the field of view using the eyepieces on the device for the existing requirements and then carry out the observation using the microscope camera i e using the PC screen which is connected The tube has a light distribution that guarantees the providing of light for the eyepieces and the ...

Page 24: ...ly centred The condenser is too low The field of view is dark or is not correctly illuminated The objective is not positioned correctly on the beam path The selector switch for the beam path is between two settings The nosepiece is not correctly fitted The condenser is not correctly fitted An objective is being used which doesn t match the lighting area of the condenser The condenser has not been ...

Page 25: ... Dirt dust on the front lens of the condenser Dirt dust on the object One side of the image is blurred The stage was not correctly fitted The objective is not positioned correctly on the beam path The nosepiece is not correctly fitted The upper side of the object is facing down The image flickers The nosepiece is not correctly fitted The objective is not positioned correctly on the beam path The c...

Page 26: ...y materials which you can dispose of at your local recycling centre Disposal of the storage box and device must be carried out by the operator in accordance with all national or regional laws in force in the location of use 12 Further information The illustrations may differ slightly from the product The descriptions and illustrations in this user manual are subject to change without notice Furthe...