The FT7 Series of wind sensors has been carefully designed for turbine control. Their compact size and robust construction mean that they will give many years of reliable service despite the harsh conditions found on many wind farms.
In design, development and manufacture everything possible is done to ensure that the product meets the demanding requirements of the wind turbine industry. The FT7 Series provides wind turbine manufacturers and operators with a ‘fit and forget’ wind sensing solution.
Every sensor is thoroughly tested before despatch and is calibrated in our own wind tunnel and no further calibration is required.
The FT702 is our best selling model for wind turbine control. It is widely used by the world's leading manufacturers in all environments, including on and offshore. Our newest model is the FT722 which features improved accuracy. For those customers who need a higher wind speed reading range, then we would recommend the FT742-FF or FT742-PM as they read wind speeds up to 75m/s.
Turbine control – onshore and offshore
Our FT7 Series are the only wind sensors specifically designed for turbine control. We are a major supplier of wind sensors to the wind energy industry and supply 11 of the top 15 turbine manufacturers.
The sensor has no moving parts and does not need re-calibration. This reduces costly turbine down-time and maintenance visits. The sensor is well suited to offshore applications with the incorporation of enhanced protection to prevent corrosion from high levels of salt spray. The sensor has achieved a Class C5-M rating as recommended by the GL Renewables Guidelines for the Certification of Offshore Wind Turbines 2012 (Section 7.11.4).
For operation in ice-prone areas both onshore and offshore, the FT7 Series is fitted with a highly effective thermostatically controlled heating system. A three element heater (one element located in the top of the sensor and two in the bottom) helps to keep the sensor ice-free. The sensor has passed the demanding US military icing test MIL-STD-810G.
Further independent tests to recognised standards show that the sensor can withstand random and sinusoidal vibration, physical impact, lightning and EMC. The sensors have also passed a hail test with 25mm hailstones hitting it at 23m/s.
The FT7 Sensors can be supplied with an analogue or digital interface. The sensor can be mounted either flat to a bar or, with the specially designed adapter, to a pipe. Both systems allow for quick and repeatable alignment of the sensor.
For more information about the use of the FT7 Series in wind turbine control, please read our case studies.