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Zephir Lidar Tested in Germany

Industrial Photonics
Oct 2017
An independent performance verification of a nacelle-mounted Zephir Ltd. lidar has been undertaken by DNV GL on a test site in Janneby, Germany, demonstrating product compliance with best-practice guidelines of the EUDP UniTTe programs — industry benchmarks for the installation of turbine-mounted remote sensing devices.

In the verification, the Zephir DM nacelle-mounted lidar was mounted horizontally on a raised platform 180 m away from two reference met masts equipped with calibrated anemometers. A series of tests and subsequent analysis was undertaken by DNV GL on the performance of the Zephir DM with respect to verification of inclinometers, availability and wind speed comparison.

Zephir Lidar’s nacelle-based wind profiler, Zephir DM, has been demonstrated to measure wind speed when mounted on a wind turbine at a very accurate level. Additionally, the device offers the advantage of being mobile and scanning at up to several hundred meters ahead of the rotor in free stream wind flow for a power curve measurement. Further, the individual unit used in this test will operate as a gold standard nacelle-lidar suitable for further tests, validations and performance verifications at a U.K. remote sensing test site where a range of remote sensing devices undergo independent performance verification.

Zephir provides hub height and turbine-mounted accurate wind measurement for wind energy and meteorological applications.

The science of measurement, particularly of lengths and angles.
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