Description
LX Microscopes by Unitron 273RB-LED-ESD – Binocular Stereo Microscope with Dual Boom Roller Bearing Stand and Ring Light, ESD SAFE VERSION (Catalog # 23726RB-ESD)
- System 273 series stereo microscope
- ***ESD SAFE VERSION***
- Model number 273RB-LED-ESD / Catalog number 23726RB-ESD
- Dual boom roller-bearing stand – 17.5″ vertical and 22″ horizontal reach (10″ x 10″ base)
- LED3000 ring light (ESD safe, 6000K, 50,000 hour lamp life)
This item is the ESD safe version of the System 273 binocular stereo microscope. The body and stand feature a baked-on powder coat with metal laced paint that measures 105Ω/sq. It also includes 10mm static grounding cables, metal boom stand bushings and metal pads on the microscope base.Since the surfaces are no longer insulative, triboelectric charging results in drastically lower voltages, especially since any charge (under 50 volts) is uniformly distributed throughout the entire surface of the microscope.
The heavy duty, dual arm roller bearing stand features a 17.5″ vertical and 22″ horizontal reach. It has a 10″ x 10″ base, weighs approximately 60 pounds, and the focus mount angles to 45° to permit additional viewing and inspection perspectives.
The LED3000 ring light is also ESD safe and is supplied with grounding cables to ensure static dissipation. It has a 6000K color temperature, 50,000 hour rated lamp life and produces 3600 foot-candles at a 4.5″ working distance.
System 273 series
It features a zoom magnification of 0.7x to 4.5x, with a 1x objective, and 10x eyepieces, standard for all models. This provides a magnification of 7x to 45x, with a working distance of 118mm. Working distance refers to the amount of space between the item being viewed and the microscope’s objective – the larger this number, the more space technicians have to operate. This is especially important in electronics manufacturing, so that workers have ample room for their hands, as well as any tools being used.
To maximize versatility, LX Microscopes by UNITRON also offers a variety of optional eyepieces and objectives, which greatly expand the capability of the System 273. For example, when 10x eyepieces are paired with a 0.5x objective, the working distance is increased to nearly eight inches.
It also features click-stops on the zoom knob at 1.0, 2.0, 3.0 and 4.0 ensure repeatable magnification changes
| Objective Zoom Setting 0.7X – 4.5X | |||||
| Eyepieces | Objective | 1.0X (included) | 0.5X | 0.7X | 2.0X |
| 10X | Total Magnification (Range) | 7X – 45X | 3.5X – 22.5X | 4.9X – 31.5X | 14X – 90X |
| Field of View (mm) | 32.8 – 5.1 | 65.7 – 10.2 | 46.9 – 7.3 | 16.4 – 2.6 | |
| 15X | Total Magnification (Range) | 10.5X – 67.5X | 5.3X – 33.8X | 7.4X – 47.2X | 21X – 135X |
| Field of View (mm) | 24.3 – 3.8 | 48.6 – 7.6 | 34.7 – 5.4 | 12.1 – 1.9 | |
| Working Distance (mm) | 118 | 195 | 145 | 35 | |
Several packages available
The System 273 is available in packages with a variety of light sources and stands. In the chart below, all models with “RB” in the model number will come with a dual arm roller bearing stand. The others have an articulating arm or standard pole stand.
The dual arm roller bearing stand has a 17.5″ vertical and 22″ horizontal reach. It is extremely stable, coming in at 61 pounds and having a 10″x10″ base. Its focus mount angles to 45° to permit additional viewing and inspection perspectives.
ESD indicates models which have specially treated, static-dissipative surfaces.
VIP stands Variable Inclination Position. Eyepieces on these are adjustable between 0 and 30 degrees.
This is a breakdown of the light sources, from left to right:
- Dimmable LED ring light
- Part number 18746
- 40 LEDs, 6000K color temperature, 50,000 hour lamp life
- Provides 3600 foot candles at 4.5” working distance
- 4-button inner and outer ring segment controller
- Dimmable LED ring light, High Output
- Part number 18743
- 80 LEDs, 6000K color temperature, 50,000 hour lamp life
- Provides 5800 foot candles at 4.5” working distance
- 8-button inner and outer ring segment controller
- Fluorescent ring light
- Part number 18742
- Fluorescent bulb, 5600K color temperature, 4500 hour lamp life
- Provides 2000 foot candles at 4.5” working distance
- LED3000
- Part number LED3000
- 40 LEDs, 6000K color temperature, 50,000 hour lamp life
- Provides 3600 foot candles at 4.5” working distance
- Includes one knob dimming control
- LED-ECO
- Part number 18744
- Economy ring light
- 30 LEDs, 6500K color temperature, 50,000 hour lamp life
- Includes one knob dimming control
- LFOD150
- Part number LFOD150
- Fiber optic light source with ring light attachment
- 150-watt variable halogen illuminator
- 3250K color temperature
| Model | Catalog | Illumination | ESD | VIP | ||||||
| None | Dim | H.O. | FL | LED3000 | LEDECO | LFOD150 | ||||
| 273AC | 23714AC | |||||||||
| 273LS | 23784 | |||||||||
| 273LS-LED3000 | 23783 | |||||||||
| 273RB | 23714RB | |||||||||
| 273RB-DMLED | 23727RB | |||||||||
| 273RB-DMLED-HO | 23728RB | |||||||||
| 273RB-FL | 23712RB | |||||||||
| 273RB-LED3000 | 23780RB | |||||||||
| 273RB-LEDECO | 23712RB-LED | |||||||||
| 273RB-RLI | 23711RB | |||||||||
| 273RB-ESD | 23714RB-ESD | |||||||||
| 273RB-LED-ESD | 23726RB-ESD | |||||||||
| 273RB VIP-ESD | 23814RB-ESD | |||||||||
| 273RB-LED VIP-ESD | 23880RB-ESD | |||||||||
Microscopes/Benchtop and Portable Microscopes Template | |
|---|---|
| Type (Microscopes) | Stereo |
| Body Style | Binocular |
| Illumination Type | LED |
| Eyepiece Inclination Degress | 45 Degrees |
| Magnification max | 45 x |
| Magnification min | 7 x |
| Working Distance | 118 MM |
| Variable Light Control | Yes |
| Rotating Head | Yes |
| Stand Type | Dual Boom |
| Camera Included | No |
| ESD Safe | Yes |
Product General Attributes | |
| Warranty | 5 YEARS |
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