Features

The Spectra Precision Laser GL522 single grade transmitters is rugged, cost-effective, automatic electronic self-leveling laser provides fast and easy level, grade, and vertical alignment. Includes a 2-way, full-function remote control with a built-in back-lit grade display. You can do everything with the remote control that you can do at the laser keypad, up to 330 ft (100 m) away from the laser even from the cab of a machine. The ability to make grade changes from anywhere on the job greatly reduces setup time and speeds operation. The GL522 Grade Laser retains all the other advantages of the GL400 series lasers with additional features and benefits. New wireless communication between the HL750 Laserometer and the transmitters provide automatic Grade Matching. Grade Matching allows measurement of unknown grade values between two points. PlaneLok is also available in both the horizontal and vertical planes. PlaneLok automatically locks the beam on the receiver and keeps it on grade eliminating all environmental factors that may induce an error. Large compensated grade range from -10% to +15%. Electronic Leveling Vibration Filter dampens vibrations typically experienced on tall tripods, in high winds, or on high vibration job sites. It can takes a 1 m (3 ft) drop on concrete. Mask mode eliminates interference with other crews on the job site. High capacity Nickel-Metal Hydride battery pack reduces operating costs. The GL522 offers an additional advanced feature that stops the rotation and points the laser along one axis for “Over the Top” pipe laying applications. This package comes with the HL750 Laserometer which features a digital readout of elevation that shows exactly how far you are from on-grade allowing quick elevation checks without moving the rod clamp. The large 127 mm (5 inch) reception height speeds up beam pickup in grade match and alignment applications. An anti-strobe sensor stops construction lights from setting off the receiver, and makes it easier to identify true laser beam signals. The protective over molded housing withstands a drop of 3 m (10 ft) onto concrete.

Specifications

• GL522 Dual Slope Grade Laser
• Laser type/class: <5 mW 635 nm, Class 3A/3R
• Drop height on concrete: 1 m (3 ft)
• Operating diameter (w/ HL750): 800 m, 2600 ft
• Compensation method: H/V Electronic Self Leveling
• Temperature compensation: Yes, every 5 °C
• Level/ vertical accuracy: 10 arc seconds 1.5 mm @ 30 m (1/16" @ 100 ft)
• Grade range: –10 to +15% Dual Axes
• Grade accuracy: 0.015% 3 mm@30 m (1/8" @ 100 ft)
• Grade resolution: 0.001% up to 9.999%, 0.01 % at higher grades
• Grade compensation: Yes
• Transmitter battery life (4 x D NiMHs): 55 hours
• Mask mode: User selectable to any window, 3 max.
• Remote control type: Full 2-way communication, operation and security lock with transmitter
• Remote control range: 100 m (330 ft) radius
• Rotation speed: 0, 300, 600 RPM selectable
• RC402 battery Life (2 x AA Alkaline): 130 hrs continuous, 1 year under normal use
• Standby mode: Yes
• Display backlight: Yes, auto shutoff after 8 seconds
• Mounting threads: 5/8" x 11 Horizontal and Vertical
• Operating temperature: –20° to +50°C (–4° to 122°F)
• Dust and waterproof: Yes - IP66
• Dimensions: 21L x 18W x 20H cm (8.3L x 7.1W x 7.9H in)
• Weight: 3.1 kg (6.8 lb)
• Warranty: 2 Years
• HL750 Laserometer
• Digital readout units: mm, cm, ft, in, frac. In
• Reception height: 127 mm (5 inches)
• Six On-grade sensitivities: Ultra Fine 0.5 mm (~1/32"), Super Fine 1 mm (~1/16"), Fine 2 mm (~1/8"), Medium 5 mm (~1/4"), Coarse 10 mm (~1/2"), Calibration Mode 0.1 mm (~1/64")
• Battery life (2 x AA): 60+ hours continuous operation
• Auto shut-off: 30 minutes/24 hours
• Operating temperature: -20°C to 50°C (-4°F to 122°F)
• Dust and waterproof: Yes - IP67
• Weight: 0.27 kg (9.5 oz)
• Warranty: 3 Years “No Excuses”

Includes

GL522 single slope grade laser with HL750 Laserometer, rod clamp, RC402 remote, 10 Ah NiMH batteries, charger and hard shell carrying case.