Quick Answer
What is the Spectra Precision DG813?
The Spectra Precision DG813 is the standard red-beam pipe laser for gravity flow pipe installation — sewer mains, storm drains, and culvert work. At ±0.01% grade accuracy and ±10% grade range, it covers all standard gravity pipe grades with room to spare.
Spectra Precision DG813 — Complete Specs, Manual & Guide
Category: Pipe Laser | Brand: Spectra Precision | Model: DG813
The Spectra Precision DG813 is the standard red-beam pipe laser for gravity flow pipe installation — sewer mains, storm drains, and culvert work. At ±0.01% grade accuracy and ±10% grade range, it covers all standard gravity pipe grades with room to spare.
Spectra Precision DG813 Full Specifications
| Accuracy | ±0.01% (±0.1mm per meter of run) |
| Grade range | 0% to ±10% |
| Grade setting resolution | 0.01% |
| Laser class / wavelength | Class 3R / 635nm red |
| Working range | 250m (820') with target |
| Plumb compensation | Automatic ±5 degrees |
| IP rating | IP67 |
| Battery life | ~40 hours |
| Operating temperature | -10°C to 50°C |
Compatible Receivers & Targets
- DG813 target (standard) — Manual target, 5-inch detection window
- DG2 wireless target — Wireless remote target for automatic grade hold
Accessories & Part Numbers
- DG2 wireless target — Wireless remote target
- Tripod/cradle — Manhole setup cradle
- Carry case — IP67 waterproof case
Error Codes Quick Reference
| Er1 | Plumb out of range — level cradle cross-level |
| Er2 | Grade sensor fault — service required |
| Er3 | Battery low — charge or replace pack |
| Er4 | Target lock lost — confirm target alignment and distance |
Frequently Asked Questions — Spectra Precision DG813
What is the grade accuracy of the Spectra DG813?
±0.01% — equal to 0.1mm per meter of run, or about 1/8 inch per 100 feet. Exceeds most municipal sewer grade tolerance requirements.
What is the maximum grade the DG813 can set?
±10% in either direction, covering all practical gravity pipe grades. Most sewer work is under 2%; the 10% maximum handles steep terrain installations.
What is the difference between DG613 and DG813?
The DG613 is the basic model with manual grade setting and a shorter working range. The DG813 adds more precise grade resolution (0.01% vs 0.1%) and longer working range (250m vs 150m). For precision sewer work, the DG813 is the better choice.
Does the Spectra DG813 work with a wireless target?
Yes — the DG2 wireless target allows the laser to automatically hold grade to the target position, reducing manual grade checks during pipe pushing. The standard DG813 package includes a manual target; the DG2 wireless target is an upgrade accessory.
How do I fix Er1 on the Spectra DG813?
Er1 means the plumb sensor has detected tilt beyond the compensation range. Level the tripod or cradle using the cross-level adjustment until the bubble is centered, then power on again.
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