Quick Answer
What is the Spectra Precision DG813?
See also: Spectra Pipe Laser ER1 — Out of Level Fix
See also: Spectra Pipe Laser ER3 — Temperature Error Fix
The Spectra Precision DG813 is a self-leveling pipe laser for underground gravity sewer and drain installation. It delivers ±3 arc-second accuracy and sets grade from 0.1% to 45%.
Spectra Precision DG813 — Complete Specs, Manual & Guide
Category: Pipe Laser | Brand: Spectra Precision | Model: DG813
The Spectra Precision DG813 is a professional-grade self-leveling pipe laser engineered for gravity sewer mains, lateral connections, and storm drainage installation. It sets grade automatically over the range of 0.1% to 45% and projects a bright 635nm red beam for easy target sighting in dark pipe environments.
Spectra Precision DG813 Full Specifications
| Accuracy | ±3 arc seconds (±1/32" per 100') |
| Grade range | 0.1% to 45% |
| Self-leveling range | ±10% grade |
| Laser class / wavelength | Class 3R / 635nm red |
| Laser beam diameter at 30m | 6mm |
| Battery | BT-32Q rechargeable or 4x C alkaline |
| Battery life | ~80 hours (alkaline) / ~40 hours (rechargeable) |
| Operating temperature | -10°C to 50°C |
| IP rating | IP67 (submersible to 1m) |
| Weight | 3.1 kg (6.8 lbs) with batteries |
| Minimum pipe diameter | 6 inch (150mm) |
| Communication | RC-602 remote control (optional) |
Accessories & Part Numbers
- RC-602 — Wireless remote control for grade and direction adjustment
- DG-TA — Target adapter for precise beam centering
- TK-18 — Hard carry case
- BT-32Q — Rechargeable Li-ion battery pack
Error Codes Quick Reference
| ER1 | Out of level — pipe slope exceeds ±10% auto-leveling range; set grade manually |
| ER2 | Battery critically low — replace or charge before continuing |
| ER3 | Temperature out of range — allow DG813 to acclimate before use |
| ER4 | Grade motor fault — service required |
Frequently Asked Questions — Spectra Precision DG813
What is the Spectra Precision DG813 accuracy?
The DG813 delivers ±3 arc-second accuracy, equivalent to ±1/32 inch per 100 feet or ±2.5mm per 100 meters. This meets the most demanding pipe installation tolerances.
What grade range does the DG813 support?
The DG813 sets grade from 0.1% to 45% (0 to approximately 24 degrees). The automatic self-leveling range covers ±10% grade; grades steeper than 10% require manual leveling using the grade adjustment controls.
Is the Spectra DG813 submersible?
Yes — the DG813 is rated IP67, meaning it can be submerged to 1 meter of water for 30 minutes without damage. This protects the instrument if a trench floods during pipe installation.
What is the minimum pipe diameter for the DG813?
The DG813 fits into pipes 6 inches (150mm) or larger in diameter when used with the standard centering adapter. For smaller pipes, contact Spectra Precision for custom centering solutions.
How do I set grade on the Spectra DG813?
Enter the required grade percentage using the front panel keypad. For grades within ±10%, the instrument levels automatically. For steeper grades (10%-45%), use the manual tilt controls to set the beam angle and verify with an inclinometer or string-line check.
Related models: Spectra LL500 | Topcon TP-L6G Pipe Laser
Track your DG813 calibration dates, service history, and field verification records with Gradelog's Equipment Registry. Free to start at gradelog.com.
