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User Manual for National 211-RLED Three Objective Cordless Microscope Click to enlarge the picture
Contents of the user manual for the National 211-RLED Three Objective Cordless Microscope
- Product category: Microscopes National
- Brand: National
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for National Microscopes
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User manual for the National 211-RLED Three Objective Cordless Microscope contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any National product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official National user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a National product will considerably shorten its lifespan!
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Product description The 211-RLED Cordless Microscope from National Optical is a three-objective single viewing microscope with a 45° inclined monocular. The three objectives are located on rotating turret with a ball bearing mount. The turret has four holes and can accommodate a fourth objective. Both the turret and the included objectives adhere to the DIN microscope objective standard. Therefore, you can use any commercially available DIN objective with this microscope.
The supplied objectives have achromatic lenses which reduce color distortions introduced by imperfections in optical elements. Reducing these color distortions allows you to see sharper images and true colors. The parfocalled and parcentered design allows for switching objectives without having to realign your sample and without losing focus. The microscope also features a wide field 10x eyepiece and has a fine and a coarse focus adjustment.
The LED illumination system has adjustable brightness which is controlled by a rheostat. It delivers light intensity equivalent to that of a 20W incandescent bulb. The light from the bottom LED emitter is focused on the sample with a 1.25 NA Abbe condenser.
The 5.3 x 5.3" mechanical stage has adjustable height, a movable slide holder and allows you to move specimen slides in X-Y plane. The slide holder bracket holds your slides securely in place. The frame of the microscope is made of cast metal with gray enamel finish.
Included with the microscope are three rechargeable AA NiMH batteries, battery charger, a dustcover, and two Allen wrenches for rack stop adjustment and eyepiece socket tension adjustment. - Optical System
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- Eyepiece: 10x wide field
- DIN 4x, 10x, 40xR objectives
- The 40xR objective is retractable
- Total magnification: 40x, 100x and 400x
- Achromatic, parfocalled and parcentered lenses
- Monocular is inclined 45°
- Head rotates 360°
- Focusing
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- Separate fine and coarse focusing
- Slip clutch prevents damage to focusing system
- Tension adjustment eliminates stage drift
- Safety rack stop prevents damage to slides and objective lenses
- Illumination
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- LED illumination equivalent to a 20W tungsten bulb
- Rheostat intensity control
- 1.25 N.A. Abbe condenser lens with spiral focusing mount
- Iris diaphragm, swing-out filter holder, blue filter
- Stage
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- Mechanical stage
- X-Y slide motion control
- Stage size: 5.3 x 5.3"
- Adjustable stage height
- Movable specimen slide holder
- Construction Details
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- Objective turret:
- Four objective holes
- Reverse position
- Mount with ball bearings - Cast metal frame with handles
- Gray enamel finish
In the Box National 211-RLED Three Objective Cordless Microscope - 3 x AA NiMH, Rechargeable Batteries
- 802-003 Auto Cut-Off Recharger usfxfyxytacafctetwbrdtsauefeqxvtfzzsr
- Dustcover
- 2 x Allen Wrenches
- Limited Lifetime Warranty
Table of Contents
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Technical parametersNational 211-RLED Specs | Microscope Type | Compound | | Eyepiece | 10x, wide field | | Nosepiece | Reverse | | Objective(s) | DIN 4x, 10x, 40xR | | Head | Rotating 360° | | Focuser | Fine / Coarse | | Light Source | LED | | Light Control | Rheostat | | Specimen Stage | 5.3 x 5.3" (135 x 135 mm) | | Battery / Runtime | 3 x AA NiMH, rechargeable / 50 hr max | | Charging Time | 8 hr minimum | | Overall Dimensions | 22 x 16 x 10" (56 x 41 x 25cm) | | Weight | 14 lb (6.4 kg) |
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