Overview
The Spectra Precision DG711-2 "Over the Top" package is a professional-grade pipe laser system engineered for sewer and underground utility contractors who demand accuracy and efficiency on every job. This complete kit eliminates the need to source components separately—everything arrives ready to set precise grades from 0-10% in pipe diameters from 8 to 24 inches. The dual-slope capability and rugged IP68 waterproof rating mean you can tackle challenging installations in wet conditions without equipment failure delays.
Built around the industry-proven DG711 digital grade laser, this package includes the 1233 optical scope for surface alignment, a heavy-duty 1161 wood tripod for stable setup over manholes, dual battery packs for extended runtime, and the RC502 remote control for adjustments from the trench. Whether you're running 200-foot residential laterals or complex municipal gravity mains, this system delivers the precision and durability that keeps crews productive and projects on grade.
Key Specifications
- Grade Range: 0% to 10% dual slope (forward/reverse)
- Accuracy: ±1/16 inch per 100 feet (±0.5mm/30m)
- Pipe Diameter Compatibility: 8" to 24" (200mm to 600mm)
- Laser Range: Up to 1,000 feet (300m) diameter with detector
- Self-Leveling Range: ±5 degrees
- Power Source: Rechargeable NiMH battery packs (2 included)
- Runtime: Up to 40 hours per battery
- Environmental Rating: IP68 (waterproof/dustproof, submersible)
- Operating Temperature: -4°F to 122°F (-20°C to 50°C)
- Remote Control Range: 300 feet (90m)
- Tripod Type: Heavy-duty hardwood with chain centering system
- Warranty: 3-year manufacturer warranty
What's in the Kit
- DG711 Dual-Slope Pipe Laser with IP68 waterproof housing
- 1233 Optical Scope for surface grade alignment
- 1161 Heavy-Duty Wood Tripod with chain and hook assembly
- (2) Rechargeable NiMH Battery Packs
- RC502 Wireless Remote Control
- Battery Charger with international adapters
- Laser Target for initial setup and calibration checks
- Rugged Transport Case with custom foam inserts
- Operator's Manual and quick reference guide
- Calibration Certificate
Job Applications
- Sanitary Sewer Installation: The dual-slope capability lets you set precise grades for gravity flow without repositioning equipment—critical for avoiding backflow issues and ensuring code compliance on residential subdivisions and commercial developments.
- Storm Drain Systems: IP68 waterproof rating means you can continue working in wet trenches and during rain events that would shut down competitors using less-protected equipment, keeping your schedule on track during unpredictable weather.
- Municipal Infrastructure Projects: The 1,000-foot range handles long runs between manholes without intermediate setups, reducing surveying time and crew labor costs on extensive city sewer rehabilitation projects.
- Culvert and Drainage Pipe: The included optical scope allows precise over-the-top alignment with existing survey stakes and benchmarks, ensuring your culverts match engineered drawings for DOT and municipal inspections.
- Utility Conduit Installation: Adjust grades remotely from the trench with the RC502 controller instead of climbing out repeatedly—saving time and reducing safety risks on deep excavations for electrical, communications, and water line conduit.
- Directional Bore Exit Pits: Set accurate receive grades for HDD operations in 8-24" casings, helping drill crews hit target zones consistently and avoid costly re-drills on river crossings and road bores.
Compatible Accessories
LR50 Pipe Laser Detector - Handheld receiver for locating laser beam in pipe
LR60 Machine-Mounted Detector - Automated grade control for laser-guided equipment
DG511 Grade Rod - Telescoping grade rod with laser target for surface work
Replacement NiMH Battery Packs - Extended capacity batteries for all-day runtime
Annual Calibration Service - Factory-certified accuracy verification and adjustment
Related Guides
Pipe Laser Setup Best Practices for Sewer Contractors
When to Use a Pipe Laser vs. Total Station for Underground Work
Maintaining Grade Laser Accuracy in Harsh Job Conditions
Proper Detector Positioning for Grade Control Systems
FAQ
- How does the dual-slope feature work, and when would I use it?
- The DG711-2 can project two different grade angles simultaneously—one forward and one reverse. This is invaluable when installing branch connections or when you need to set opposing grades from a single setup point, such as working from a central manhole toward two different discharge points. It eliminates the need to reposition and re-level your laser, cutting setup time by 50% on complex layouts. Use the RC502 remote to toggle between slopes or activate both simultaneously for maximum efficiency.
- What's the advantage of the "Over the Top" package versus a basic pipe laser?
- This package provides everything for both in-pipe grading and surface survey alignment in one kit. The 1233 optical scope lets you establish your laser position by sighting to survey stakes and benchmarks from above ground before lowering the laser into the pipe—ensuring you're set to the engineer's design grade from the start. The heavy-duty tripod with centering chain allows precise positioning over manholes, while dual batteries mean you can charge one while running the other, avoiding downtime on long installations. Buying components separately would cost significantly more and risk compatibility issues.
- Can this laser handle the moisture and debris in active sewer work?
- Absolutely. The IP68 rating means the DG711 is fully submersible and sealed against dust, mud, and standing water—common conditions in sewer trenches and wet manholes. Contractors regularly use this laser in environments that would destroy non-rated equipment. The sealed housing protects internal electronics while still allowing you to access controls. Many sewer contractors report using these lasers for 5+ years in demanding wet conditions without water intrusion failures. Just rinse debris off after use and perform basic maintenance.
- What's the real-world battery life, and how do I extend runtime on long jobs?
- Under typical conditions (moderate temperatures, standard laser intensity), expect 30-40 hours per battery charge. Cold weather reduces this to 20-25 hours, while hot conditions may extend it slightly. The package includes two batteries specifically so you can rotate them—run one for a full day, charge it overnight, and swap to the fresh battery the next morning. For extended projects, consider purchasing a third battery. The laser also has a power-saving mode that dims the beam slightly to extend runtime up to 50 hours when you're working shorter pipe runs where maximum intensity isn't needed.
