National 211 Instructions Manual Download | Manualshive

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background image

Eyepiece (ocular lens)

Eyepiece tube

Head of microscope

Arm

Objective turret

(nosepiece)

Objective lens

Specimen holder

(mechanical stage)

Iris diaphragm lever

Condenser lens

Stage

Illuminator field

lens housing

Base

Coarse focus
knob

Fine focus knob

Rheostat control

Tension adjustment

On/Off switch
and fuse holder

(back of base)

Swing-out filter holder

Rack stop set screw

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Summary of Contents for 211

Page 1: ...08 Tri County Parkway Schertz Texas 78154 Phone 210 590 9010 Fax 210 590 1104 INSTRUCTIONS FOR MODELS 211 212 Corded MODELS 211 RLED 212 RLED Rechargeable Cordless COMPOUND MICROSCOPES Copyright 1 14 2013 National Optical Scientific Instrument Inc ...

Page 2: ...e Objective lens Specimen holder mechanical stage Iris diaphragm lever Condenser lens Stage Illuminator field lens housing Base Coarse focus knob Fine focus knob Rheostat control Tension adjustment On Off switch and fuse holder back of base Swing out filter holder Rack stop set screw ...

Page 3: ...ecimen 4 MECHANICAL STAGE Permits precise mechanical manipulation of the specimen slide 5 STAGE Platform of the microscope where the specimen slide is placed 6 CONDENSER LENS 1 25 N A Abbe condenser lens positioned under center of stage condenses light rays from substage illumination and fills the back lens element of objective lens to improve image resolution 7 IRIS DIAPHRAGM Iris opening is cont...

Page 4: ...ger is also equipped with an automatic trickle charge feature the red LED indicator lamp located on recharger will be illuminated when batteries are receiving maximum charge After batteries are charged the red LED indicator lamp will turn to green and charger automatically switches to trickle charge The charger can be left plugged in but for safety reasons it is a good idea to disconnect the charg...

Page 5: ...kes the specimen slide With fine focus adjustment at mid range the rack stop has been adjusted at the factory to assure the 40x and 100x lens will clear the thickness of a normal specimen slide and cover slip However if the rack stop has been improperly adjusted or if using a thicker than normal slide or cover slip moving the 40x and 100x lenses too quickly or carelessly could cause damage to the ...

Page 6: ... clockwise to loosen tension Use of a wide rubber band will provide a better grip on the tension adjustment collar After adjusting tighten the set screw to lock collar in place NOTE It is recommended that you leave the tension as loose as possible for ease of focusing yet not so loose that it permits the stage of microscope to drift downward from its own weight and cause the microscope to drift ou...

Page 7: ...rmine if they are already charged or if they should be charged before initial use If recharging is required following directions in 3 a above c Replacing LED element An LED bulb will last up to 50 000 hours so you don t have to do this exercise very often To open the illuminators field lens housing use 0 9mm L type hex key wrench supplied with your microscope Loosen hex screws on lens housing Remo...

Page 8: ...for rechargeable LED microscopes 801 160 Replacement fuse 0 5 amp time delay 951 Dustcover 16 tall x 13 heavy vinyl with stitched seams 975 001 Carrying case anodized aluminum fabric lining accessory pockets Velcro straps keyed lock Fits all models in series except dual head models LIMITED LIFETIME WARRANTY Please see our website www nationaloptical com for complete warranty details and exclusions...

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