Mount your anemometers and wind vanes on NRG TallTowers™ according to industry best practices.
DETAILS
Our most popular boom, the 2.4m Tubular Boom mounts sensors away from NRG TallTowers to minimize tower-induced flow distortions. The sensor extension mounts anemometers and wind vanes at a minimum of 20 boom diameters above the horizontal arm, which meets industry IEC 61400-12-1:2017 recommendations for tower and boom offset distances. This boom is still compact enough to ship via UPS—maximizing convenience and affordability.
Older versions of this boom had a shorter sensor rise—please contact our sales team to inquire about legacy boom options if you need to match your current equipment.
There are five different 2.4m Tubular Boom kits:
- #14025 includes one boom with hardware to mount one NRG S1 Anemometer right out of the box.
- #14026 is identical but comes with two booms instead of one for convenience.
- #4214 includes one boom with hardware to mount one NRG Class 1 Anemometer, NRG 40C Anemometer, NRG 40H Anemometer, NRG 200M Wind Vane, or NRG 200P Wind Vane right out of the box.
- #4159 is identical but comes with two booms instead of one for convenience.
- #4478 is a single boom with an adapter for mounting one WindSensor P2546-OPR Anemometer. To mount the Thies First Class Advanced Anemometer, use this boom and simply add a Thies Adapter (#7640).
The robust, dual-beam support structure is made from galvanized steel to resist corrosion. Booms come with a self-aligning mounting bracket that is easily hose-clamped to the tower, ensuring that the sensor maintains a 90 degree vertical orientation.
SPECIFICATIONS PRINT SPECS
| 2.4m (95″), Tubular (1) (#4214) | 2.4m (95″), Tubular (2) (#4159) | 2.4m (95″), Tubular (1), WS (#4478) | 2.4m (95″), Tubular (1), S1 (#14025) | 2.4m (95″), Tubular (2), S1 (#14026) | |
|---|---|---|---|---|---|
| DESCRIPTION | |||||
| Boom type | Sensor mounting boom for standard NRG sensors on TallTowers 8″ to 10″ diameter. | Sensor mounting boom for standard NRG sensors on TallTowers 8″ to 10″ diameter. | Sensor boom for mounting first class anemometers on NRG TallTowers 8″ to 10″ diameter. | n/a | Sensor boom for mounting first class anemometers on NRG TallTowers 8″ to 10″ diameter. |
| Applications | Wind resource assessment; for mounting an NRG anemometers and wind direction vanes on NRG TallTowers where long offset distances are required | Wind resource assessment; for mounting an NRG anemometers and wind direction vanes on NRG TallTowers where long offset distances are required | Wind resource assessment; where long offset distances are required | n/a | Wind resource assessment; where long offset distances are required. |
| Sensor compatibility | NRG Class 1 AnemometerNRG 40C AnemometerNRG 200M Wind Direction VaneNRG 200P Wind Direction Vane | NRG Class 1 AnemometerNRG 40C AnemometerNRG 200M Wind Direction VaneNRG 200P Wind Direction Vane | Windsensor P2546-OPR AnemometerThies First Class Advanced Anemometer (must use one Thies Adapter, #9344) | n/a | NRG S1 Anemometer |
| Tower compatibility | All TallTowers with 8″ or 10″ diameter tubing sections | All TallTowers with 8″ or 10″ diameter tubing sections | All TallTowers with 8″ or 10″ diameter tubing sections | n/a | All TallTowers with 8″ or 10″ diameter tubing sections |
| INSTALLATION | |||||
| Mounting | Boom attaches to tower with stainless steel hose clampsSensor mounts to boom with set screw and cotter pin | Boom attaches to tower with stainless steel hose clampsSensor mounts to boom with set screw and cotter pin | Boom attaches to tower with stainless steel hose clampsSensor mounts to boom with set screw and cotter pin | n/a | Boom attaches to tower with stainless steel hose clampsSensor mounts to boom with set screw and cotter pin |
| Tools required | 5/16 inch hex driver or flat blade (-) screwdriver for hose clampsPhillips head (+) screwdriver to mount sensor | 5/16 inch hex driver or flat blade (-) screwdriver for hose clampsPhillips head (+) screwdriver to mount sensor | 5/16 inch hex driver or flat blade (-) screwdriver for hose clampsPhillips head (+) screwdriver to mount sensor | n/a | 5/16 inch hex driver or flat blade (-) screwdriver for hose clampsPhillips head (+) screwdriver to mount sensor |
| Recommended for installation | Electric drill with 5/16 nut driver bit for tightening hose clampsSheet metal shears or similar for trimming hose clamps | Electric drill with 5/16 nut driver bit for tightening hose clampsSheet metal shears or similar for trimming hose clamps | Electric drill with 5/16 nut driver bit for tightening hose clampsSheet metal shears or similar for trimming hose clamps | n/a | Electric drill with 5/16 nut driver bit for tightening hose clampsSheet metal shears or similar for trimming hose clamps |
| ENVIRONMENTAL | |||||
| Lifespan | 2 years + | 2 years + | 2 years + | n/a | 2 years + |
| PHYSICAL | |||||
| Weight | 3.6 kg (8 lbs) | 3.6 kg (8 lbs) | 3.6 kg (8 lbs) | n/a | 3.6 kg (8 lbs) |
| Overall boom length | 2.4 m (95″) | 2.4 m (95″) | 2.4 m (95″) | n/a | 2.4 m (95″) |
| Boom diameter | 12.7 mm (0.5″) at sensor mount location | 12.7 mm (0.5″) at sensor mount location | 25 mm (.98″) at sensor mount | n/a | 25 mm (0.98″) at sensor mount location |
| Offset height | 40C cup height above horizontal boom arm: 508 mm (20.0″) 200P wing height above horizontal boom arm: 520 mm (20.5″) | 40C cup height above horizontal boom arm: 508 mm (20.0″) 200P wing height above horizontal boom arm: 520 mm (20.5″) | Windsensor cup height above horizontal boom arm: 508 mm (20.0″) Thies cup height above horizontal boom arm: 514 mm (20.2″) | n/a | S1 cup height above horizontal boom arm: 508 mm (20.0″) |
| MATERIALS | |||||
| Boom | 15.8 mm (0.625 inch) galvanized steel tube | 15.8 mm (0.625″) galvanized steel tube | 15.8 mm (0.625 inch) galvanized steel tube | n/a | 15.8 mm (0.625″) galvanized steel tube |
| Universal mounting plate | Galvanized steel | Galvanized steel | Galvanized steel | n/a | Galvanized steel |