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OBE-1-BA-e-1510 

Operation 

5.1  Getting started 

Plug the 

mains plug

 into the socket and plug the cold device plug into the device. 

 

Switch on the 

main switch

 and use the dimmer (switch and dimmer are combined in 

one rotary knob) to adjust the brightness of the bulb  (at  the beginning,  select a low 
level of brightnesss. 
 

 

5.2  Adjust the gap between the eyes (only for OBE 112, OBE 113) 

 
Different  users  have  different  gaps  between  the  eyes.  So  each  time  a  different 
person  uses  the  microscope,  the  gap  between  the  two  eyepieces  must  be  re-
adjusted. 
While  you  are  looking  through  the  eyepieces,  use  one  hand  to  hold  the  right  or  left 
lens  barrel  firmly.  By  pulling  them  apart  or  pushing  them  together,  you  can  either 
increase  or  reduce  the  gap  between  the  eyes.  As  soon  as  the  left  and  right  visual 
fields fully  overlap  each  other  (only  one  circular  image  is  visible),  this  is  the  correct 
gap between the eyes. 
 
 

5.3  Adjusting the magnification 

 
Select the 

lens

 with the lowest  magnification and make sure that the lens revolving 

unit is properly clicked into place. 
 
Place  the 

test  object

  on  the  specimen  stage  and  fix  it  with  the  object  holder,  if 

necessary. 
Use  the control dial for the 

X-Y axis specimen stage

 to position the sample  in  the 

correct place (central under the middle of the lens). 
 
Carefully  raise  the  specimen  stage  using  the 

coarse  adjustment  knob

,  until  the 

slide is almost touching the lens (observe from the side). The lens must not touch the 
object holder (risk of glass breakage). 
 
Look through the eyepieces (just one eyepiece with the OBE 111 device) and use the 
coarse  adjustment  knob  to  lower  it  slowly  until  the  object  is  visible.  If  necessary, 
adjust the brightness by adjusting the bulb (potentiometer). Avoid overexposure. 

 

Now use the 

fine adjustment knob

 to adjust the focus. For slides with low contrast 

or  a  small  number  of  objects,  for  example  individual  cells,  we  recommend  that  you 
use  a  high-contrast  standard  slide  to  help  you  to  make  the  adjustment  to  find  the 
correct level. 

 

Once  you  have  found  a  point  which  must  be  observed  more  closely,  this  must  be 
adjusted to be in the middle of the visual field (

x/y adjustment of the stage

). To be 

able  to  view  the  required  section  of  the  object,  this  section  must  be  positioned 
centrally under the lens. 

Summary of Contents for OBE 111

Page 1: ...mbH 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 User instructions Compound laboratory microscope KERN OBE 111 OBE 112 O...

Page 2: ...al data model outfit 7 4 Assembly 8 4 1 Lenses 8 4 2 Condenser 8 4 3 Head 8 4 4 Eyepieces 8 5 Operation 9 5 1 Getting started 9 5 2 Adjust the gap between the eyes only for OBE 112 OBE 113 9 5 3 Adjus...

Page 3: ...itional 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 informatio...

Page 4: ...fore 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 To wipe o...

Page 5: ...sting screw Head Lens revolving unit Lens Object holder Specimen stage Aperture adjustment Condenser Condenser Field lens Control dial X Y axis Specimen stage Fine adjustment knob Coarse adjustment kn...

Page 6: ...OBE 1 BA e 1510 6 Rear view Mains connection Coarse adjustment knob Fine adjustment knob Fuse Condenser Focus dial Adjusting ring torque Example OBE 111 monocular...

Page 7: ...7 OBE 1 BA e 1510 3 Technical data model outfit...

Page 8: ...fitted in the device The height can be adjusted using the focus dial 4 3 Head The head is already fitted on the device After loosening the adjusting screw the head can be rotated by 180 degrees for ex...

Page 9: ...operly clicked into place Place the test object on the specimen stage and fix it with the object holder if necessary Use the control dial for the X Y axis specimen stage to position the sample in the...

Page 10: ...us for the second eye on the dioptre setting When doing this do not touch the fine adjustment knob If necessary alter the brake action for the control knobs using the locking ring The rotary knobs on...

Page 11: ...e microscope 7 Maintenance These microscopes are generally maintenance free Service work should be limited to the replacement of bulbs light sources and electrical fuses Should a defect occur please c...

Page 12: ...tly The condenser is too low The visual field is dark or is not correctly illuminated The lens has not been correctly adjusted The object revolving unit is not correctly fitted The condenser is not co...

Page 13: ...nt lens of the condenser Dirt dust on the object One side of the image is blurred The stage has not been assembled correctly The lens is not positioned correctly on the beam path The lens revolving un...

Page 14: ...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...

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