The DADI DE2A-GF500 is a long-range green-laser electronic theodolite designed for engineering alignment and angular measurement over extended distances. Its coaxial green laser pointing system provides a clearly visible reference along the telescope line of sight, with laser range options of 1 km and 1.5 km. The instrument is suited to applications such as high-rise building alignment, large-structure positioning, tower installation and other long-distance engineering measurement tasks where a visible directional reference is required.
Product Family: The DADI DE2A-GF500 is the long-range green-laser configuration within the DADI DE2A electronic theodolite series. It combines 2″ angular accuracy, an absolute encoder, a 30× telescope and a coaxial green upper laser available with 1 km and 1.5 km effective working distance configurations for long-distance pointing and alignment.
The DADI DE2A-GF500 is the long-range green-laser electronic theodolite configuration within DADI's DE2A series. It is designed for engineering applications that require conventional horizontal and vertical angle measurement together with a visible directional reference over extended distances.
The DE2A-GF500 is available with 1 km and 1.5 km effective green-laser working distance configurations under good outdoor visibility conditions. It also provides 2″ angular accuracy, an absolute encoder angle-reading system, a 30× erect-image telescope, a 47 mm objective aperture and single-axis liquid-electric compensation.
The DE2A series is DADI's electronic theodolite product family. It includes standard electronic, red-laser, green-laser, long-range green-laser and autocollimation configurations. Within this family, the DE2A-GF500 is the long-range green-laser configuration.
| Model | DE2A Series Configuration | Primary Function |
|---|---|---|
| DE2A | Standard Electronic Theodolite | General electronic angle measurement with laser plummet |
| DE2A-L | Red Laser Configuration | Red upper laser with effective working distance up to 300 m |
| MPE-02L | Green Laser Configuration | Green upper laser with effective working distance up to 300 m |
| DE2A-GF500 | Long-Range Green Laser Configuration | 1 km / 1.5 km effective working distance configurations |
| DE2A-AC | Autocollimation Configuration | Precision alignment and specialized measurement applications |
The DE2A-GF500 is available in 1 km and 1.5 km effective working distance configurations under good outdoor visibility conditions. Both remain DE2A-GF500 configurations rather than separate model families.
The green upper laser is coaxial with the telescope sighting direction, providing a visible directional reference for long-distance pointing and alignment work.
The specified laser spot size is ≤10 mm at 500 m. For the 1.5 km configuration, the specified spot size at 1500 m is less than 30 mm.
The absolute encoder angle-measurement system provides 2″ angular accuracy with a minimum display increment of 1.0″.
The instrument uses a 30× erect-image telescope with a 47 mm effective objective aperture, 1°30′ field of view and 1.5 m minimum focusing distance. Its single-axis liquid-electric compensator operates within a ±3′ range.
The 1 km and 1.5 km options are two working-distance configurations of the same DE2A-GF500 model. The longer-distance option does not use a separate model name.
| Model | Green Laser Effective Working Distance | Configuration Positioning |
|---|---|---|
| DE2A-GF500 | 1 km | Long-distance pointing and engineering alignment |
| DE2A-GF500 | 1.5 km | Extended-range pointing and alignment for large-scale engineering work |
| Angle Measurement | |
| Angular Accuracy | 2″ (0.6 mgon) |
| Reading System | Absolute Encoder |
| Minimum Display Increment | 1.0″ (0.2 mgon) |
| Angle Units | DEG / MIL / GON / V% |
| Circle Diameter | 74 mm (2.9 in) |
| Green Laser Pointing | |
| Laser Type | Coaxial Green Upper Laser |
| Available Effective Working Distance | 1 km / 1.5 km |
| Spot Size at 500 m | ≤10 mm |
| Spot Size at 1500 m | <30 mm for 1.5 km configuration |
| Internal Plummet | Class 2 Laser, 1.5 mm at 1.5 m |
| Telescope | |
| Magnification | 30× |
| Effective Objective Aperture | 47 mm |
| Image | Erect |
| Field of View | 1°30′ |
| Minimum Focusing Distance | 1.5 m |
| Compensator & Physical | |
| Compensator | Single-Axis Liquid-Electric |
| Compensation Range | ±3′ |
| Plate Vial Sensitivity | 30″ / 2 mm |
| Circular Vial Sensitivity | 8′ / 2 mm |
| Dimensions | 180 × 166 × 355 mm |
| Main Unit Weight | 4.1 kg |
Long-distance directional reference for alignment and positioning during high-rise construction.
Visible long-range pointing for installation and alignment of towers and other tall engineering structures.
Angular observation and directional reference for large structural components and long-distance engineering work.
The coaxial green laser provides a visible directional reference when a standard short-range upper laser configuration is insufficient.
Yes. The DE2A-GF500 is the long-range green-laser configuration within DADI's DE2A electronic theodolite series. It extends the visible green-laser pointing distance beyond the standard MPE-02L green-laser configuration.
No. Both are DE2A-GF500 configurations. The difference is the effective green-laser working distance configuration rather than a separate model name.
The DE2A-GF500 is available with 1 km and 1.5 km effective working distance configurations under good outdoor visibility conditions.
The specified angular measurement accuracy is 2″ (0.6 mgon), using an absolute encoder angle-reading system.
The specified spot size is ≤10 mm at 500 m. For the 1.5 km configuration, the specified spot size at 1500 m is less than 30 mm.
Yes. The DE2A-GF500 uses a coaxial green upper laser aligned with the telescope sighting direction.
Yes. The green upper laser is used for pointing and alignment, while the internal Class 2 laser plummet is used for instrument centering. These are separate laser functions.
Typical applications include long-distance engineering alignment, high-rise construction, tower installation and positioning of large engineering structures.
Explore DADI DE2A series configurations including the standard DE2A electronic theodolite, red-laser DE2A-L, green-laser MPE-02L, long-range green-laser DE2A-GF500 and autocollimation DE2A-AC.
What's in the Box
DE2A-GF500 Digital Electronic Theodolite (2-Second)
Hard Carrying Case
Soft Nylon Key Brush
Toolkit with Cleaning Cloth (For Lens), Screwdriver and 1 Needle
NiMH Rechargeable Battery Pack
5 AA Alkaline Battery Holder
Battery Charger
User Manual
Surveying accessories
Tripod | J-1A |
| |
Staff | 3m |
| |
Prism | AK18-1 |
| |
| Triple | TPS30-Y |  |
Contact our customer support
team 7×24 hours
WhatsApp:+86-18961173276
