- One Button Triggers Measurement and Data Storage
- 0.6mm/0.8mm Height Accuracy
- Advanced RAB Code Technology
- Pre-installed Measurement Programs
- Height Difference Measurement
- Inverse Staff Reading for Ceiling Height
- Internal Memory
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Specifications |
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| Telescope | DL-502 | DL-503 |
| Magnification | 32X | 28X |
| Objective aperture | 45mm (1.78in.) | 36mm (1.42in.) |
| Resolving power | 3″ | 3.5″ |
| Field of view | 1°20” | |
| Minimum focus | 1.5m (5.0ft.) | |
| Image | Erect | |
| Stadia ratio | 100 | |
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Compensator |
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| Type | Pendulum compensator with magnetic damping system | |
| Working range | ±15’ | |
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Accuracy (standard deviation for 1km double run leveling) |
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| Electronic reading | ||
| Invar staff | 0.6mm | 0.8mm |
| Fiberglass staff | 1.0mm | 1.5mm |
| Optical reading | 1.0mm | 2.0mm |
| Measuring range | 1.6 to 100m (5.3 to 328ft.) | |
| Measuring time | ||
| Fine | 3 sec. (single/continuous/average) | |
| Tracking | 1 sec. | |
| Least count | 0.0001/0.001m, 0.001/0.01ft., 1/8in. | |
| Minimum brightness condition | 20lx. at the staff surface | |
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Distance measurement (D=measuring distance) |
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| Accuracy | ||
| D≦10m | ±10mm (±0.4in.) | |
| 10m<D≦50m | ±0.1%×D | |
| 50m<D | ±0.2%×D | |
| Least count | 0.01/0.1m, 0.1/1ft., 1in | |
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User interface |
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| Display | 128×32 dot matrix LCD with backlight | |
| Keyboard | 8 keys (7 on front panel, 1 on side panel) | |
| Circular level sensitivity | 10’/2mm | |
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Measurement program |
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| Single / Continuous / Average / Elevation / Height difference / Cut & Fill / Stakeout distance | ||
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Data storage |
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| Internal memory | 2,000 points | |
| JOB | Max. 20 jobs | |
| Data output format | CSV | |
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Interface |
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| RS-232C | ||
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Environmental |
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| Water resistance | IPX4 (IEC 60529:2001) | |
| Operating temperature | -20°C to 50°C (-4°F to 122°F) | |
| Storage temperature | -40°C to 70°C (-40°F to 158°F) | |
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Others |
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| BDC46B (Li-ion battery, 7.2V) | ||
| Operating time | Approx. 16 hours | |
| Weight (including battery) | 2.4kg (5.3 lb.) | |
| Size | 257(D)×158(W)×182(H)mm (10.1×6.2×7.2in.) | |
