TPi March 2016

products & developments Pipe lasers for utility construction

to lay pipe from one manhole to another. The new RC803 remote control provides full function control and utilises infrared communications when in the pipe at a distance of up to 150m (500ft). For ‘over- the-top’ setups, the remote uses radio communications at a distance of up to 130m (430ft). Flexible power options for the pipe lasers provide 40 hours of operation with NiMH rechargeable batteries and 50 hours with alkaline batteries. Alkaline batteries can be used directly in the laser without a separate battery pack. To recharge the NiMH batteries, a vehicle outlet 12V charger is available. A large LCD allows users to easily view the display when the laser is in a manhole. All functions are controlled via a graphical, user- friendly menu. The same user interface is on the RC803 remote control. Both models incorporate new features. To reduce costly rework, the Line Alert will cause the beam to blink to notify the operator that the setup has been disturbed. Using the Line Set function, the beam can be moved up to 100 per cent grade in a few seconds and then adjusted left or right to perform first day set in a short trench. Both models have a Line Scan function that allows the user to quickly align the beam to the pipe laying target’s centre, which is placed in the last piece of pipe. The DG813 has advanced features when used with the SF803 Spot Finder beam detector. The Spot Align feature will automatically align the DG813’s beam to the centre of the Spot Finder. This alignment feature can be used for an accurate and quick setup, to orientate the beam towards the next manhole when used in a trench, through the pipe or when doing an over-the-top setup. Spot Match is used for checking that the pipe has been installed to the correct grade or for finding the grade value of a pipeline. This can also be used to calculate the grade between manholes. SpotLok is used to lock the beam in a desired position for applications when the beam could be subject to environmentally caused drift, such as temperature changes in the pipe.

manholes with precast inverts and a tight radius. Both models have a grade range from -12 to +40 per cent and are fully self-levelling over the entire grade range. The cross axis is also fully compensated, providing quick set up and ensuring the laser will be level without having to manually rotate it in the invert. The new pipe lasers have a 150m (500ft) working range, providing a single setup

Trimble has introduced the Spectra Precision ® DG613 and DG813 pipe lasers, a new generation of Dialgrade ® lasers for the installation of gravity flow pipelines. The DG613 and DG813 are smaller in length than their predecessors, the DG511 and DG711. This shorter length is a benefit when setting up the units in

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Tube ProducTs InTernaTIonal March 2016

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