NET1100M Motorised 3-D Station for MONMOS

Sokkia (Japan) has introduced the new NET1100M 3-D Station for the 3-D Coordinate Measuring System MONMOS (MONo MObile 3-D System), offering an extended range and motor drive mechanism.

The NET1100M features timesaving semi-automatic control when used in conjunction with control terminal SDR4000 and realises precision 3-D measurement for deformation of landslides, tunnels, ships, dams, buildings and road surfaces; tunnel profiling, construction supervision, shape and dimensional measurement of domes or train bogies, large-scale part installation in factories, and more. NET1100M also features Sokkia’s original servo-motor drive mechanism and control algorithm using angle information obtained directly from the angle-measuring encoders, and the full benefit of MONMOS is realised by using the wide range of application programs included in the SDR4000.

The measuring range using a sheet target is the longest to date for MONMOS at 300m (984ft.) (using a 50 x 50mm target) with an accuracy of +/-(1 + 2ppm x D) mm, enabling the 3-D measurement of larger objects from further away. The need to constantly relocate the instrument is minimised, increasing the total 3-D coordinate accuracy.

NET1100M’s reflectorless measurement capability can accurately measure hard to reach places without using any target. The measuring range is 100m (330ft.) with white surfaces (90% reflective) and accuracy is +/-(3 + 2ppm x D) mm. NET1100M has an extended range providing +/-(2 + 2ppm x D) mm accuracy up to 3,000m (9,842ft.) with Sokkia’s AP surveying prism. Distance is measured every 0.9 seconds (initial 4.8s).

The NET1100M achieves 1” (0.3mgon) angle accuracy, which is equal to 0.5mm (0.02in.) at 100m (330ft.) and 1mm (0.04in.) at 200m (650ft.). Accurate angle measurement remarkably improves total 3-D coordinate accuracy.

The EDM beam can be used as a laser pointer, and a white LED is built into the telescope housing allowing easy long-range target sighting even in poor lighting conditions.