For wind turbines using visibility controlled aviation obstruction lights. Simulates a fixed visibility allowing function of all connected equipment to be tested.
Overview

There is a requirement to be able to test the correct operation of aviation obstruction lights on wind turbines, both at the initial construction phase and at regular intervals thereafter as part of general operational maintenance. This SWS test plaque demonstrates the correct operation of the aviation obstruction lights by reproducing the required visibility from the Biral sensor, triggering the change of brightness.
The SWS test plaque is supplied to a customer specified, pre-configured visibility value. These test plaques can be fitted to any Biral SWS sensor and utilise the mounting points used by the calibration plaques.
Each test plaque forces the Biral visibility sensor to report a known Meteorological Optical Range (MOR) as ascribed to each plaque. This MOR value is equivalent to a known visibility value. This MOR output will then cause the lighting control system to adjust the brightness of the aviation obstruction lights.
The MOR value for each test plaque is specified by the customer at the time of purchase. The MOR range available is 0.5 to 7.0km in increments of 0.1km.
These test plaques are for use as a simulator only and are not to be used for the calibration of Biral sensors.
Specifications
MOR range available | 0.5 to 7.0km in increments of 0.1km |
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Measurement Error | ± 15% of assigned MOR value |
Material | Anodised aluminium optical support and installation arm |
Weight | 0.32kg. Including carry case 1.02kg |
Warranty | 2 years |
Packaging | The plaque is packaged in a rigid plastic foam lined protective carry case. Includes a set of foam zero reference optical plugs. - User guide |
Downloads
Application notes, white papers and other publications relating to this product can be found in our resource area.
Sales & Support
Contact Biral for more information
To find out more about this instrument or to discuss your application requirements please do not hesitate to contact Biral.
- Complete our online enquiry form
- email enquiries@biral.com
- Telephone +44 (0)1275 847787
After Sales Support
Biral offers free advice and technical support for the lifetime of the instruments we sell. Once you have purchased the unit you can always contact us for help using the links on our Service Support page.