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Mounting Boom | Antenna

Mount Thies FCA anemometers on NRG 50m and 60m XHD TallTowers in compliance with Annex G of the IEC 61400-12-1 Ed. 1 (2005) and Ed. 2 (2017) standards with this antenna boom.

  • Mounting Boom | Antenna

Configuration Options

The NRG Antenna Boom mounts a Thies FCA anemometer on NRG 50m and 60m XHD TallTowers. Anemometer cups are positioned at exactly 50.4m and 60.2m heights, respectively. This mounting arrangement complies with guidelines provided in Annex G of both editions of the IEC 61400-12-1 standard.

This mounting solution is well suited for traditional wind resource assessment campaigns as well as Edition 2 power performance tests at operating wind farms in conjunction with a remote sensing device.

NRG tubular tilt-up towers allow companies to perform both internal and contractual power performance testing in a way that does not require the installation of a permanent met tower. No permanent foundations or long-term permitting is needed. These towers reduce the overall cost of the test, allow for short lead times (typically less than a week), and come in an efficient and portable single package, offering more logistical flexibility for wind farm developers and operators working in remote locations.

  • One (1) Antenna Boom structure with mounting hardware
  • One (1) stem for a Thies First Class Anemometer
  Antenna, 50/60m, Thies (#12801)
Boom type Thies Anemometer mounting boom for top of NRG 50m and 60m XHD, Super 60m & 80m TallTowers with Standard Footprint
Applications Wind speed measurement compliant to IEC 61400-12-1 Ed. 1 (2005) and Ed. 2 (2017), including power performance testing.
Sensor compatibility Thies FCA Anemometer
Tower compatibility
  • NRG Systems 50m/60m XHD
  • Super 60m & 80m TallTowers
  • Boom attaches to tower with galvanized steel U-bolts.
  • Anemometer mounts to stem with set screws.
Tools required
  • 9/16" combination wrench
  • 9/16" deep socket & ratchet
  • 1/8" hex key or 1/8" hex key socket
  • 3mm hex key
Lifespan 2 years +
Boom diameter Boom: 48.3mm (1.9")
Stem: 33.4mm (1.3")
Offset distance Sensor positioned above tower center point.
Offset height Anemometer cup position:
  • 50.4m on NRG 50m XHD TallTowers
  • 60.2m on NRG 60m XHD TallTowers
  • 0.83m above mounting stem knuckle (both tower types)
  • 1.86m above top of tower (both tower types)
Boom Boom: Aluminum
Stem: Aluminum
U-bolts Galvanized steel

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