With a rapid 180°/s rotation speed and innovative xTrak technology, the ALPHA R1 ensures exceptionally smooth, fast operation. Its Automatic Prism Recognition (APR) identifies and measures prisms up to 1000 m, while Intelligent Prism Search performs 360° detection within 300 m—cutting search steps by about 67% compared to manual stations. Continuous tracking maintains lock on moving prisms at speeds up to 20°/s for reliable monitoring of mobile targets. High-speed servo motors and precision electro-optics deliver industry-leading dynamic measurement performance, reducing field time while preserving survey-grade accuracy.
ALPHA R1 |
ANGLE
Accuracy | 1″ |
Method | Absolute Encoding |
Detecting System | H: quadruple; V: quadruple |
Minimum Reading | 0.1″ |
Diameter of Circle | 79 mm |
Vertical Angle | Zenith 0 / Horizontal 0 |
Unit | 360° / 400 gon / 6400 mil |
DISTANCE
Single Prism Range | 3,500 m |
Accuracy (Prism) | 1 mm + 1 ppm |
Non-prism Range | 1,000 m |
Accuracy (Non-prism) | 3 mm + 2 ppm |
Measuring Time – Prism | Fine: <0.7 s; Tracking: <0.3 s |
Measuring Time – Non-prism | T ≤ 600 m: 0.5–3 s; T > 600 m: <10 s |
PPM Correction | Auto Sensor |
TELESCOPIC
Length | 164.5 mm |
Diameter | 45 mm (EDM: 47 mm) |
Magnification | 30× |
Image | Erect |
Field of View | 1°30′ |
Resolving Power | 3″ |
Minimum Focus | 1.5 m |
TRAK MOTORIZATION
Type | Torque motor |
Maximum Speed | 180°/s |
AUTO PRISM RECOGNIZE
Working Range | 1.5–1000 m |
Searching Time | 5 s |
PRISM SEARCH
Working Range | 1.5–300 m |
Typical Searching Time | <10 s |
Field of View | V: ±10°; H: 360° |
PRISM LOCK
Tracking Speed | 20°/s |
LEVEL
Plate Level | 30″/2 mm |
Circular Level | 8′/2 mm |
COMPENSATOR
Item | Specification |
Tilt Sensor | Dual-axis liquid electric sensor |
Range | 4′ |
Accuracy | 1″ |
LASER PLUMMET
Type | 635 nm, Class II |
Accuracy | 0.4 mm at 1.5 m height |
Spot | 1.8 mm at 1.5 m height |
GENERAL
Item | Specification |
Display | Two-sided 6-inch color touch LCD |
Camera | 5 MP |
Guide Light | Red/Yellow, 635 nm / 593 nm |
OS | Android 9.0 |
Internal Memory | RAM 3 GB, ROM 32 GB |
CPU | MSM8953 |
I/O Interfaces | RS232, USB, Micro USB, Bluetooth 4.0 |
WLAN | Dual-band 802.11 a/b/g/n |
Battery | Li-Ion, 14.4 V, 6400 mAh |
Working Duration | 8 hours |
Waterproof/Dustproof | IP65 |
Operating Temperature | –20°C to +50°C |
Dimension | 430 (H) × 255 (L) × 235 (W) mm |
Weight | 9.3 kg |