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OBS-1-BA-e-1912 

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.  When  using  or  transporting  the  microscope  it  is 
particularly  important  to  avoid  abrupt  movements,  as  this  may  damage  the  optical 
components. 
 
You  should  also  avoid  getting  dirt  or  finger  prints  on  the  lens  surface,  because  in 
most cases this will reduce image clarity. 
 
To maintain the performance of the microscope, it must never be disassembled. So 
components  such  as  lenses  and  other  optical  elements  should  be  left  as  they  were 
before use. Also the electrical parts on the rear and base of the device must not be 
tampered  with,  as  in  this  area  there  is  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 specifications, then 
fires or other damage to the device could occur. 
 
The main  switch must  also  be  switched off before  the mains  cable  is  connected.  In 
this way you will avoid triggering an electric shock. 
 
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. 
 
 

 
The  rechargeable  batteries  must  be  replaced  by  qualified 
electricians only. 
 

 

 

 

Summary of Contents for OBS 101

Page 1: ...fo kern sohn com Tel 49 0 7433 9933 0 Fax 49 0 7433 9933 149 Internet www kern sohn com User instructions Transmitted light school microscope KERN OBS 1 OBS 101 OBS 102 OBS 103 OBS 104 OBS 105 OBS 106...

Page 2: ......

Page 3: ...eatures 7 4 Assembly 10 4 1 Microscope head 10 4 2 Objectives 10 4 3 Eyepieces 10 4 4 Condenser 10 5 Operation 11 5 1 Getting started 11 5 2 Pre focussing 12 5 3 Adjusting the interpupillary distance...

Page 4: ...ered with as in this area there is 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...

Page 5: ...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...

Page 6: ...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 organi...

Page 7: ...OBS 1 BA e 1912 6 2 Nomenclature...

Page 8: ...7 OBS 1 BA e 1912 3 Technical data Features Product dimensions 130x300x310 mm Packaging dimensions 410x280x210 mm Net weight 3 kg Gross weight 5 kg Input voltage DC 6V 500mA...

Page 9: ...OBS 1 BA e 1912 8...

Page 10: ...9 OBS 1 BA e 1912...

Page 11: ...ertures For objectives which are marked OIL you must use an immersion oil with the lowest level of inherent fluorescence 4 3 Eyepieces You must always use eyepieces with the same magnification for bot...

Page 12: ...subject to a high level of light The next step is to place an object holder with the sample on the mechanical stage To do this the cover glass must be facing upwards You can fix the object holder to t...

Page 13: ...e 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 The simplest way of doing this...

Page 14: ...ary 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 n...

Page 15: ...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 pat...

Page 16: ...ure 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 diap...

Page 17: ...es Specification of the batteries Battery type LR6 AA Capacity 700 mAh Nominal voltage 1 2 V Charging time ca 10 h Operation time with ideal light intensity ca 2 h Total operation time ca 4 h The batt...

Page 18: ...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...

Page 19: ...nge the bulb the housing of the field lens needs to be completely unscrewed The LED can simply be pulled out of its socket It is absolutely important to be aware of its correct alignment when mounting...

Page 20: ...he 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 settin...

Page 21: ...rt dust on the objective Dirt dust on the front lens of the condenser Dirt or dust in the field of view Dirt dust on the eyepieces Dirt dust on the front lens of the condenser Dirt dust on the object...

Page 22: ...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 i...

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