Topcon DL-503
- One button triggers measurement and data storage
- 0.6 mm/0.8 mm height accuracy
- Wave and Read technology
- Pre-installed measurement programs
- High accuracy height difference measurement
- Inverse staff reading for ceiling height
- Description
- Specifications
Description
The Topcon DL-503 Automatic Level is a reliable and high-precision surveying instrument designed for professional construction, civil engineering, and leveling applications. Featuring 30x magnification, it delivers clear and sharp views of the target, enabling accurate measurements even across long distances. Its precision automatic compensator provides fast and dependable leveling, helping surveyors achieve consistent results on a variety of terrains.
Whether used for construction site leveling, elevation measurements, or general surveying, the Topcon DL-503 Automatic Level combines optical clarity, precision, durability, and ease of operation to deliver dependable performance for professional fieldwork.
| Model | DL-503 |
|---|---|
| Instrument Type | Electronic Digital Level |
| Magnification | 28X |
| Objective Aperture | 36mm (1.42in.) |
| Resolving Power | 3.5″ |
| Field of View | 1°20′ |
| Minimum Focus | 1.5m (5.0ft.) |
| Image | Erect |
| Stadia Ratio | 100 |
| Compensator | Pendulum compensator with magnetic damping system |
| Compensator Working Range | ±15′ |
| Height Measurement Accuracy | 0.8mm (Invar staff) / 1.5mm (Fiberglass staff), standard deviation for 1km double-run leveling |
| Optical Reading Accuracy | 2.0mm (Fiberglass staff) |
| Electronic Measuring Range | 1.6 to 100m (5.3 to 328ft.) |
| Measuring Time | Fine: 2.5 sec. / Tracking: 1 sec. |
| Least Count | 0.0001/0.001m, 0.001/0.01ft., 1/8in. |
| Minimum Brightness Condition | 20lx. at the staff surface |
| Distance Measurement Accuracy | ±10mm (D≤10m) / ±0.1% × D (10m<D≤50m) / ±0.2% × D (D>50m) |
| Distance Measurement Least Count | 0.01/0.1m, 0.1/1ft., 1in. |
| Display | 128 × 32 dot matrix LCD with backlight |
| Keyboard | 8 keys (7 on front panel, 1 on side panel) |
| Circular Level Sensitivity | 10’/2mm |
| Measurement Programs | Single, Continuous, Average, Elevation, Height Difference, Cut & Fill, Stakeout Distance |
| Internal Memory | 2,000 points |
| Maximum Jobs | 20 jobs |
| Data Output Format | CSV |
| Interface | RS-232C |
| 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) |
| Power Supply | BDC71 Li-ion battery, 7.2V |
| Operating Time | Approx. 16 hours |
| Dimensions | 257(D) × 158(W) × 182(H)mm (10.1 × 6.2 × 7.2in.) |
| Weight | Approx. 2.4kg (5.3lb.) including battery |
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