Wind Turbine Control

We began selling to the wind turbine industry in 2002, and have worked closely with the top wind turbine manufacturers ever since to refine and improve our sensors. With over 70% of all offshore wind turbines using an FT sensor, we are the undisputed market leader in this sector.

FT wind sensors have no moving parts and do not need re-calibration. This reduces costly turbine down-time and maintenance visits. They are well suited to offshore applications with the incorporation of enhanced protection to prevent corrosion from high levels of salt spray. They have 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 our sensors can withstand random and sinusoidal vibration, physical impact, lightning and EMC. The sensors have also passed a hail test with 50mm hailstones hitting it at 30m/s.

FT7 Series sensors can be supplied with an analogue or digital interface. They 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.


Ideal for offshore wind turbines and all marine applications.

Tested and proven:

  • Corrosion resistant: ISO 9227 (2006) & IEC12944 (1998)
  • Corrosion class: C5-M High
  • Corrosion test in neutral salt spray atmosphere for 1440 hours

Rain, Mist, Fog and Humidity


  • DEF STAN 00-35 Test C26 - Fog intensity of 1 to 2 ml/80cm² for one hour
  • DEF STAN 00-35 Test CL27 - Rain at 200mm for one hour
  • IP67 - Submerged in 1 metre depth of water for 30 minutes
  • EN 60068-2-78 (2002) - Stationary relative humidity +93% for 240 hours
  • EN 60068-2-30 (2005) - Cyclic humidity - Six 24 hour cycles, upper temperature 55°C

Sand & Dust

Sand and dust resistant: DEF STAN 00-35 CL25 (2006) sand particles for 3 hours and dust particles for 3 hours, at 29 m/s air velocity, concentration 1.1g/m³.

Sand and Dust


Hail resistant: EN 61215 (2005) 10 hail stones, 7.5 grams each show at the sensor at 23 m/s.


Freezing Rain and Ice

Designed for harsh winters, the FT7 Series wind sensors have an in-built heating system that gives total temperature control. Ice-resistant to MIL-STD-810G:
  • Ice-resistant: Sensor remains ice-free when freezing rain applied in a chamber with temperature -14°C, wind speed 15m/s.
  • De-icing: Sensor exposed to freezing rain in air flow of 15m/s and -14°C. Ice built up to 45mm. Heaters switched on. Airflow and temperature unchanged. The sensor was ice-free in under 15 minutes.


  • Passed: EN60068-2-13 (1999) 4 hours at a constant low pressure typical to 3000 metres above sea level.
  • Additional tests in a dedicated altitude wind tunnel have shown that the sensor measures accurately up to 4000m.


3 axis Sinusoidal and Random Vibration.

  • EN 60068-2-6 (2008)
    5-500 Hz, 1 octave/min sweep range for sinusoidal vibration.
  • EN 60068-2-64 (2008)
    5-500 Hz, 90 mins per axis, 0.0075g²/Hz for random vibration.


Drop resistant: EN 60068-2-31 (2008) dropped 6 times at different angles from 1 metre onto steel faced concrete.


Passed: EN 60529:1992+A2:2013 - Sealed to IP66 and IP67
  • Exposed to a dust chamber for 8 hours.
  • Submerged in 1 metre depth of water for 30 mins.
  • Sprayed by powerful water jets at 100 litres per minute from a distance of 2.5 metres.

Heat and Cold

Operating Temperature: -40°C to +85°C

  • EN 60068-2-1 (2007) - 16 hours of cold air at -40°C.
  • EN 60068-2-2 (2007) -  16 hours dry heat at +85°C.
  • EN 60068-2-14 (2009) -  74 hours of heat and cold, 16 temperature cycles from -40°C to +70°C.

Solar Radiation

24 hours of UV radiation with an ambient temperature of 55°C, irradiance of 1120 W/m².

Passed: EN 60068-2-5 (2000)


Ag Solve Mon. Ambiental Ltda.
Meteorologia e Hidrologi
Rua Oswaldo Cruz, 764 - Cidade Nova
Indaiatuba - SP - CEP 13334-010
T: +55 (19) 3825-1991
F: +55 (19) 3825-1901


Tongman Energy Technology (Shanghai) Co., Ltd.
Registred address:上海市奉贤区庄行镇叶庄公路135号2幢1022室
Office address:上海市徐汇区龙华西路585号华富大厦B座18B4室
Postcode: 201108
T: +86 021 54251822 / +86 021-62619627 / +86 0411 39728146
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189-0001 東京都東村山市秋津町5-2-15
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DS Company
부산 연제구 월드컵로160 JH빌딩 545호
T: +82-51-796-2060

Parkor Korea Indus Co., Ltd.
Doksan-dong, #1010, Tower A, Hyundai Knowledge Industry Center,
70 Dusan-ro, Geumcheon-gu, Seoul 08584, Republic of Korea
서울특별시금천구두산로 70, A-1010 독산동현대지식산업센터
T: +82-2-2169-2500
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3S Nunergy Solutions
JD Jayathri, 3B, III Floor
8 P.T. Rajan Salai, KK Nagar
Chennai - 600 078
Contact: C. Sundar
T: +91-9790994051

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