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Overview
The Spectra Precision DG813-3 Pipe Laser represents the pinnacle of grade control technology for demanding pipe installation projects. This fully waterproof dialgrade system features an intuitive graphic display interface that simplifies complex grade calculations and reduces setup time on job sites. Engineered for contractors who demand precision and reliability, the DG813-3 combines intelligent automated grade establishment with battle-tested construction that withstands the harshest underground conditions. The included large pipe plate, remote control, and spot finder create a complete solution for pipe diameters up to 36 inches. With its compact design and advanced dialgrade technology, operators can quickly set precise grades from -10% to +40% while maintaining accuracy to within 1/16 inch at 100 feet—ensuring proper flow rates and eliminating costly rework on sanitary sewer, storm drain, and utility installations.
Key Specifications
- Grade Range: -10% to +40% dialgrade capability
- Accuracy: ±1/16 inch (±1.6mm) at 100 feet
- Laser Class: Class 3R visible red laser diode
- Working Range: Up to 1,500 feet (457m) diameter with detector
- Pipe Diameter Capacity: 8 to 36 inches with included large pipe plate
- Display: High-contrast graphic LCD with backlight
- Power Source: 4 D-cell alkaline batteries (100+ hours runtime)
- Waterproof Rating: IP68 - fully submersible and dust-tight
- Self-Leveling: Automatic with out-of-level warning
- Operating Temperature: -4°F to 122°F (-20°C to 50°C)
- Dimensions: 10.6 x 9.8 x 7.1 inches (270 x 250 x 180mm)
- Weight: 11 lbs (5kg) with batteries
What's in the Kit
- Spectra Precision DG813-3 Pipe Laser with Dialgrade
- Large Pipe Plate (accommodates 8-36 inch pipe)
- RC803 Remote Control with digital display
- Spot Finder target for precise alignment
- Heavy-duty protective hard case
- 4 D-cell alkaline batteries
- Operating manual and quick-start guide
- Calibration certificate
- Two-year manufacturer's warranty
Job Applications
- Sanitary Sewer Installation: The dialgrade graphic display allows rapid grade adjustments for varying pipe runs, ensuring proper fall rates (typically 1-2%) for gravity flow while the waterproof construction handles wet conditions common in sewer trenches.
- Storm Drain Systems: Large pipe capacity and extended range capability make it ideal for oversized storm pipe up to 36 inches, while the remote control enables one-person operation when working in deep excavations or confined spaces.
- Culvert Placement: The spot finder and high-visibility laser beam facilitate precise alignment on long culvert runs under roadways where accuracy is critical to prevent water pooling and structural failure.
- Utility Conduit Installation: Compact design fits easily in smaller diameter pipes for electrical, telecommunications, and gas line conduits where maintaining consistent grade prevents sagging and ensures cable pulling efficiency.
- Agricultural Drainage: Wide grade range (-10% to +40%) accommodates the varied slopes required for field tile and drainage pipe systems, while durable construction withstands muddy, abrasive farming conditions.
- Site Development Projects: Multi-diameter pipe plate eliminates the need for multiple setups when installing different pipe sizes on commercial and residential developments, reducing equipment costs and improving productivity.
Compatible Accessories
- Spectra Precision LR50 Laser Receiver - Machine-mountable detector for extended range applications
- Spectra Precision CR700 Laser Receiver with Rod Clamp - Handheld receiver for grade checking
- High-Visibility Laser Target Cards - Set of 3 magnetic targets for quick visual alignment
- Spectra Precision Small Pipe Plate - For pipes 4-12 inches in diameter
- Heavy-Duty Telescoping Grade Rod - 8-foot sectional rod for grade verification
- D-Cell Alkaline Battery Pack (12-pack) - Replacement power supply
- Red Laser Safety Glasses - ANSI-certified eye protection
Related Guides
- Complete Guide to Pipe Laser Setup and Grade Establishment
- Understanding Pipe Slope: Converting Between Percentages, Ratios, and Inches per Foot
- Pipe Laser Maintenance and Calibration Best Practices
- Pipe Laser Buying Guide: Comparing Dialgrade vs. Digital Models
FAQ
- What's the difference between dialgrade and digital grade entry on pipe lasers?
- Dialgrade models like the DG813-3 use a mechanical dial and graphic display to set grade, offering intuitive visual feedback and not requiring complex calculations. This makes grade changes faster in the field and reduces input errors. Digital models require numerical entry via keypad. Many contractors prefer dialgrade for its simplicity and speed, especially when making frequent grade adjustments throughout the day.
- Can this laser be used in partially flooded trenches or manholes?
- Yes, the DG813-3 features IP68 waterproof certification, meaning it's fully submersible and can operate underwater. This makes it ideal for applications where standing water is present, such as wet weather installations or working in active flow conditions. The sealed construction also prevents dust and debris infiltration that can damage internal components.
- How far can the laser beam reach, and do I need a detector?
- The visible laser beam is effective up to approximately 300-400 feet depending on ambient light conditions. For longer runs or bright sunlight conditions, you'll need a compatible laser receiver like the LR50 or CR700, which extends the working range to 1,500 feet. Most contractors use a detector for any pipe run over 200 feet to ensure consistent accuracy.
- Is the DG813-3 suitable for one-person operation?
- Absolutely. The included RC803 remote control allows a single operator to adjust grade, check alignment, and power the unit on/off from the working end of the pipe without returning to the laser. The graphic display on both the laser and remote shows grade settings, battery status, and leveling information, enabling efficient solo operation that reduces labor costs on pipe installation projects.
