The Spectra Precision GL622N-HXC is a complete, contractor-ready dual slope grade laser kit engineered for demanding earthwork and civil construction environments. Bundled with the HL760 rod-mounted receiver and the versatile CR700 multi-use detector, this configuration gives machine operators and grade crews everything needed to execute precise slopes, drainage layouts, and site grading from the first cut through final compaction verification. Built on Spectra Precision's proven platform, the GL622N-HXC delivers the accuracy, range, and ruggedness that heavy-duty construction demands.
Jobsite Overview & Applications
Whether you are running scrapers across a large pad site, cutting drainage swales, or checking subgrade tolerances before paving, the GL622N-HXC keeps every crew member working from the same accurate plane. The dual-axis slope capability allows the instrument to simultaneously project a grade in both the X and Y axes, eliminating the need for multiple setups when laying out complex drainage patterns or crowned roadbeds. The extended operating range pairs well with machine-mounted receivers on dozers and motor graders, while the CR700 detector brings the same laser plane down to rod-and-level finish work at grade stakes.
Key Specifications
- Laser Class: Class 3R, 635 nm visible red beam
- Self-Leveling Range: ±5° automatic compensation
- Dual Slope Range: ±10% on both X and Y axes simultaneously
- Working Radius: Up to 800 m (2,600 ft) diameter with compatible receiver
- Grade Accuracy: ±1.5 mm at 30 m (1/16 in at 100 ft)
- Rotation Speed: 0, 100, 300, 600 RPM selectable
- Battery Life: Up to 100 hours on D-cell alkaline batteries
- Protection Rating: IP66 dust and water resistant
- Operating Temperature: -20°C to +50°C (-4°F to +122°F)
- Included Receiver: HL760 rod-mounted laser receiver
- Included Detector: CR700 multi-use grade detector
What's in the GL622N-HXC Kit
- GL622N Dual Slope Rotating Grade Laser — core instrument with dual-axis grade projection
- HL760 Rod-Mounted Receiver — large 76 mm catch zone for extended-range grade rod work and machine control
- CR700 Multi-Use Detector — versatile handheld/clamp detector for finish grading and interior slab work
- RC402N Remote Control — wireless slope and function control from the machine cab or grade rod
- Tripod Adapter and Mounting Hardware
- D-Cell Battery Pack and Carrying Case
Job Applications
Pad & Site Grading: Set a single grade plane and control cuts and fills across large commercial or industrial pad sites without resetting the instrument. The 800 m operating diameter keeps the laser relevant from one end of the jobsite to the other.
Drainage & Swale Layout: Program independent X and Y slopes to establish crown sections, cross-slopes, or single-direction drainage ditches in a single instrument setup, reducing layout time and the chance of conflicting grade stakes.
Road Base & Subgrade Preparation: Use the HL760 with a machine-mounted bracket on a motor grader or dozer to maintain consistent subgrade tolerances across road base layers before aggregate or asphalt placement.
Concrete Flatwork & Slab-on-Grade: The CR700 detector snaps to a grade rod or screed rail, giving finishers a precise, audible and visual reference for placing and screeding concrete to specified floor or slab elevations.
Compatible Accessories
- RC402N Wireless Remote Control — adjust slope and speed from the cab or the rod without returning to the instrument
- HL760 Replacement Rod Receiver — spare or additional receiver for multi-machine operations
- CR700 Replacement Detector — additional grade detector for second finish crew
- Spectra Precision Heavy-Duty Tripod — stable platform optimized for rotating grade lasers
- Machine Mounting Bracket Kit — mast and clamp hardware for dozer and grader cab mounting
- Protective Carrying Case — foam-lined hard case for transport and storage
Frequently Asked Questions
- Can the GL622N-HXC be used for machine control on a dozer or motor grader?
- Yes. The HL760 receiver included in this kit is designed for rod and mast mounting. When combined with the RC402N remote control, the operator can adjust grade settings from the cab without leaving the machine, making it well-suited for dozer blade and motor grader applications on medium-scale earthwork projects.
- What is the difference between the HL760 receiver and the CR700 detector in this kit?
- The HL760 is a large-zone rod-mounted receiver optimized for long-range exterior work and machine-mounted applications. The CR700 is a compact multi-use detector intended for finish grading, slab-on-grade, and interior applications where a smaller, clamp-on form factor is more practical. Together they cover virtually every grade-checking scenario on a typical project.
- How does the dual slope function work on the GL622N?
- The GL622N allows the operator to independently dial in a grade percentage or ratio on both the X-axis and Y-axis of the instrument simultaneously. This means a single laser setup can project a tilted plane in two directions at once, which is essential for crowned road sections, parking lot drainage, and any surface that must shed water in more than one direction.
- Is the GL622N-HXC suitable for interior concrete work or is it primarily an outdoor instrument?
- While the GL622N is engineered for heavy-duty outdoor earthwork, it is fully usable for interior concrete flatwork and slab placement. The CR700 detector in this kit is specifically well-suited for interior finish applications, attaching to a screed rail or grade rod to provide audible and visual feedback for slab placement. The instrument's IP66 rating also means concrete dust and water splatter during pours will not compromise the unit.
Frequently Asked Questions
Can the GL622N-HXC be used for machine control on a dozer or motor grader?
Yes. The HL760 receiver included in this kit is designed for rod and mast mounting. When combined with the RC402N remote control, the operator can adjust grade settings from the cab without leaving the machine, making it well-suited for dozer blade and motor grader applications on medium-scale earthwork projects.
What is the difference between the HL760 receiver and the CR700 detector in this kit?
The HL760 is a large-zone rod-mounted receiver optimized for long-range exterior work and machine-mounted applications. The CR700 is a compact multi-use detector intended for finish grading, slab-on-grade, and interior applications where a smaller, clamp-on form factor is more practical. Together they cover virtually every grade-checking scenario on a typical project.
How does the dual slope function work on the GL622N?
The GL622N allows the operator to independently dial in a grade percentage or ratio on both the X-axis and Y-axis of the instrument simultaneously. This means a single laser setup can project a tilted plane in two directions at once, which is essential for crowned road sections, parking lot drainage, and any surface that must shed water in more than one direction.
Is the GL622N-HXC suitable for interior concrete work or is it primarily an outdoor instrument?
While the GL622N is engineered for heavy-duty outdoor earthwork, it is fully usable for interior concrete flatwork and slab placement. The CR700 detector in this kit is specifically well-suited for interior finish applications, attaching to a screed rail or grade rod to provide audible and visual feedback for slab placement. The instrument's IP66 rating also means concrete dust and water splatter during pours will not compromise the unit.
