GEO-ALLEN CO.,LTD.
Punctuality, Quality, Rigor, and Service (P/Q/R/S)
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Specifications
| Telescope: | DT-2A | DT-2 | DT-5 | DT-10 | DT-20 |
| Length: | 154mm | 154mm | 154mm | 154mm | 154mm |
| Objective lens: | 45mm | 45mm | 45mm | 45mm | 45mm |
| Magnification: | 30x | 30x | 30x | 30x | 30x |
| Image: | Erect | Erect | Erect | Erect | Erect |
| Field of view: | 1°30′ | 1°30′ | 1°30′ | 1°30′ | 1°30′ |
| Resolving power: | 3" | 3" | 3" | 3" | 3" |
| Minimum focus: | 1m | 1m | 1m | 1m | 1m |
| Stadia constant: | 0 | 0 | 0 | 0 | 0 |
| Stadia ratio: | 100 | 100 | 100 | 100 | 100 |
| Electronic Angle measurement: | |||||
| Method: | Incremental reading | Incremental reading | Incremental reading | Incremental reading | Incremental reading |
| Detecting: | Horizontal:2 sides | Horizontal:2 sides | Horizontal:2 sides | Horizontal:2 sides | Horizontal:2 sides |
| Vertical:1 sides | Vertical:1 sides | Vertical:1 sides | Vertical:1 sides | Vertical:1 sides | |
| Minimum reading: | 1"/5" | 1"/5" | 1"/5" | 10"/20" | 10"/20" |
| Accuracy*1 | 2" | 2" | 5" | 10" | 20" |
| Diameter of circle: | 79mm | 79mm | 79mm | 79mm | 79mm |
| Display: | |||||
| Display panel | 2 sides | 2 sides | 2 sides | 2 sides | 2 sides |
| Illumination: | yes | yes | yes | yes | yes |
| Compensator: | |||||
| Tilt sensor | Automatic vertical | / | / | / | / |
| Compensator | / | ||||
| Range: | ±3' | / | / | / | / |
| Setting accuracy | 3" | / | / | / | |
| Optical Plummet Telescope: | |||||
| Magnification: | 3x | 3x | 3x | 3x | 3x |
| Filed of view: | 50 | 50 | 50 | 50 | 50 |
| Focusing range: | 0.5m-∞ | 0.5m-∞ | 0.5m-∞ | 0.5m-∞ | 0.5m-∞ |
| Level sensitivity: | |||||
| Plate level: | 30"/2mm | 30"/2mm | 30"/2mm | 30"/2mm | 30"/2mm |
| Circular level: | 8'/2mm | 8'/2mm | 8'/2mm | 8'/2mm | 8'/2mm |
| Power supply: | |||||
| Battery: | Ni-Mh battery | Ni-Mh battery | Ni-Mh battery | Ni-Mh battery | Ni-Mh battery |
| Operating hour: | 12 hours | 12 hours | 12 hours | 12 hours | 12 hours |
| Other: | |||||
| Data Output: | RS-232C | RS-232C | RS-232C | RS-232C | RS-232C |
| Dimension: | 160x150x330mm | 160x150x330mm | 160x150x330mm | 160x150x330mm | 160x150x330mm |
| Weight: | 5kg | 5kg | 5kg | 5kg | 5kg |
| Water and dust proof | IP54 | ||||
| Operating Temp: | -20℃~+50℃. | ||||
| Memory | 500 points | ||||
| Laser Specifications | |||||
| Model | DT-2AJ | DT5J | |||
| Point accuracy | 5" | 10" | |||
| Plumb accuracy | 1/30000 mm | 1-20000 mm | |||
| Horizontal accuracy | 1/30000 mm | 1-20000 mm | |||
| Range(day) | 0.9m -60m | 0.9m-60m | |||
| Range(night) | 0.9m-120m | 0.9m-120m | |||
| Error between laser axis and sigh | 5" | 10" | |||
| Voltage | 4.5V | 4.5V | |||
