Hydroelectric power plants: Measurements of large components with Laser Tracker API - Automated Precision Europe GmbH
The measurement services offered by PWT are extremely varied and require a high degree of flexibility. For example, certain measurement tasks sometimes require the laser tracker to be positioned at a height of 10 meters on the relatively narrow edge of an inlet housing (tracker at upper right on the housing). This is where the wheat is separated from the chaff - heavier and bulker equipment simply cannot be set up here, and even the process of transporting these types of systems becomes more difficult. With a weight of 8.6 kg, API laser trackers are only a little heavier than the average shopping bag and can be transported in a carrying case on the passenger seat of a car.
Measuring jobs must be well prepared in advance to avoid any unpleasant surprises on site. For this reason, the customer usually sends pictures or drawings of the parts to be measured beforehand. The jobs generally relate to individual components, and frequently involve verification of their adherence to specified shapes and positions or geometrical inspections. Measurements do not always have to be taken indoors; some jobs require the ability to obtain precision measurements outside, exposed to wind and weather.
Temperature sensors and a weather station integrated into the laser measuring system prevent any undesirable influences on the measurement results in this and other situations. In this respect, API laser trackers are completely enclosed and their design principle also means that they do not require active temperature compensation, such as the regulated fans or ventilators used to control thermal expansion in conventional systems.
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21 February 2012
