Digital Theodolite Pentax ETH 502
Features :
- Large easy to read-display
- Zero set and reverse angle display
- A row of soft keys allows simple and fast operation.
- A large display (LCD) is incorporated on both sides of the instrument. Both vertical and horizontal angles are displayed in degrees or gons.
- All the models have a bright 30x magnification telescope which ensures sharp and clear images even in poor light conditions.
- Clockwise and counter-clockwise angle measurement
- Conversion of the vertical angle to a percentage grade
- Zero setting of the horizontal angle at any position
- Horizontal angle ‘Hold key function
- Clockwise and counter-clockwise angle measurement
- Conversion of the vertical angle to a percentage grade
- Zero setting of the horizontal angle at any position
- Horizontal angle ‘Hold key function
- Powered by Alkaline batteries
Applications
- Setting out right angles and checking plumb
- Alignment measurements
- Anchor bolt layout
- 90° layout
| Electronic Theodolites ETH-500 | Series Specification | ||||
| Model | ETH-502 | ETH-505 | ETH-510 | ETH-520 | |
| Telescope | Imaging | Erect image | |||
| Objective aperture | 45 mm | ||||
| Magnification | 30 x | ||||
| Resolution | ≤ 3” | ||||
| Field of view | 1° 20’ | ||||
| Shortest focusing distance | 1.35 m | ||||
| Stadia multiplication constant | 100 | ||||
| Stadia addition constant | 0 | ||||
| Angle Measuring | Angle measuring mode | Absolute encoder | |||
| Angle measuring accuracy | 2″ | 5″ | 10″ | 20″ | |
| Angle display | 1″/5″ | 1″/5″ | 5″/10″ | 10″/20″ | |
| Angle unit | 360°/400G | ||||
| Compensator | Tilt sensor | Automatic vertical compensation | |||
| Tilt compensator | Yes | Yes | No | No | |
| Soft switch | ON/OFF | ON/OFF | – – | – – | |
| Compensation range | ± 3’ | ||||
| Display unit | Two-sided | Two-sided | |||
| Optical plummet Image | Erect | Erect | |||
| Magnification | 3 x | ||||
| Angle of vision | 3° | ||||
| Focusing range | 0.5 m ~ ∞ | ||||
| Sensitivity of tubular vial mm | 30”/2 | 30”/2 | 40”/2 mm | 40”/2 mm | |
| Sensitivity of circular vial | 8’/2 mm | ||||
| Dust & Water Protection | IP44 | ||||
| Type of base | Detachable | ||||
| Power supply | Battery | 4 x single three (AAA) type dry battery | |||
| Ambient temperature | For operation | -20°C – +50°C | |||
| Weight | Instrument | 4.5 kg | |||
| Measurements | Carrying case | 1.9 kg | |||
| Instrument | W 175 mm x L 170 mm x H 334 mm | ||||
| Carrying case | W 330 mm x L 450 mm x H 220 mm |