Extend and retrofit NRG booms to meet your project’s needs with our boom extensions and adapter kits.
DETAILS
All boom extensions and adapters are made of durable galvanized steel. Both stub mast options come with hose clamps for mounting on any tower or boom up to 203 mm (8”) in diameter.
Each Boom Extension that comes standard with our 2.4m (95”) Side Mount Booms can also be purchased separately. Extensions #5815 and #9342 are for mounting NRG sensors, including the NRG 40C Anemometer, the NRG Class 1 Anemometer and the NRG 200P Wind Vane. Extensions #4475 and #9165 are for mounting the WindSensor P2546-OPR Anemometer. Each boom extension name includes the ratio between the diameter of the horizontal boom and the height the extension will position anemometer cups above the boom. For instance, “20D” indicates that the cups of a WindSensor P2546-OPR Anemometer will be positioned above the horizontal boom arm by an offset height that is 20 times the horizontal boom diameter when using a #9165 boom extension.
We offer a WindSensor Adapter Kit to retrofit standard NRG 60.5” Tubular Booms for mounting the WindSensor P2546-OPR Anemometer.
The Thies Adapter is a collar adapter that allows you to mount the Thies First Class Advanced Anemometer on any 2.54 cm (1”) diameter vertical pipe, such as NRG boom #4478 or any boom already fitted with a WindSensor boom extension.
The 16” Stub Mast is a straight stub mast that mounts vertically on our 2.87 m (113”) pipe booms to raise the sensor position 410 mm (16 inches) vertically. Compatible with all NRG anemometers and wind vanes.
The 13” Z Mast is an offset stub mast that mounts on our 2.87 m (113”) pipe booms to extend the sensor position 122 mm (4.8 inches) vertically and 239 mm (9.4 inches) horizontally. Compatible with all NRG anemometers and wind vanes.
SPECIFICATIONS PRINT SPECS
| for 40C, 200P, NRG Class 1, 200M, 26.7D (#9342) | for WindSensor, 20D (#9165) | for WindSensor, 15D (#4475) | fits 25 mm (0.98″) dia. Pipe (#9344) | 16″ Stub Mast (#1941) | 13″ Z Mast (#1942) | |
|---|---|---|---|---|---|---|
| DESCRIPTION | ||||||
| Boom type | n/a | n/a | Boom extension | Collar adapter | straight stub mast for mounting standard NRG sensors | offset boom for mounting standard NRG sensors |
| Applications | n/a | n/a | For mounting WindSensor P2546-OPR or Thies First Class Advanced Anemometers onto 2.4 m (95″) NRG side mount booms | Mounting Thies First Class Anemometer onto vertical pipe masts with 25 mm (0.984″) outer diameter | wind resource assessment; for mounting one NRG #40 Anemometer or one NRG #200P Wind Direction Vane | wind resource assessment; for mounting one NRG #40 Anemometer or one NRG #200P Wind Direction Vane |
| Sensor compatibility | n/a | n/a | WindSensor P2546-OPR AnemometerThies First Class Advanced Anemometer (must use one Thies Adapter, #9344) | Thies First Class Advanced Anemometer | NRG #40 AnemometerNRG #200P Wind Direction Vane | NRG #40 AnemometerNRG #200P Wind Direction Vane |
| Tower compatibility | n/a | n/a | Any NRG TallTower with 2.4 m (95″) NRG booms (#4214) | Any Tubular or Lattice tower that has booms with 25 mm (.984″) diameter vertical pipe, such as NRG boom #4478 or any boom already fitted with a WindSensor Adapter Kit. | any vertical mast up to 203 mm (8 inches) diameter | any vertical mast up to 203 mm (8 inches) diameter |
| INSTALLATION | ||||||
| Mounting | n/a | n/a | Retrofits existing 95″ NRG tubular boom (#4214) to enable first class anemometer mounting | Can be used to retrofit any boom with 25 mm (.984″) diameter vertical pipe, such as NRG boom #4478 or any boom already fitted with a WindSensor Adapter Kit. | stub clamps to tower or boom with supplied hose clampssensor mounts to boom with set screw and cotter pin | stub clamps to tower or boom with supplied hose clampssensor mounts to boom with set screw and cotter pin |
| Tools required | n/a | n/a | 5/16″ hex socket bit for drill, 3/8″ open end wrench or socket driver, tape measure | 3 mm allen wrench | 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 |
| Recommended for installation | n/a | n/a | Battery operated drill with clutch | n/a | electric drill for tightening hose clampssheet metal shears or similar for trimming hose clamps | electric drill for tightening hose clampssheet metal shears or similar for trimming hose clamps |
| ENVIRONMENTAL | ||||||
| Lifespan | n/a | n/a | n/a | n/a | 2 years + | 2 years + |
| PHYSICAL | ||||||
| Weight | n/a | n/a | n/a | n/a | 0.18 kg (0.4 pounds) | 0.23 kg (0.5 pounds) |
| Overall boom length | n/a | n/a | n/a | N/A. No vertical rise or boom extension. | 406 mm (16″) | 343 mm (13.5 inches) |
| Boom diameter | n/a | n/a | n/a | n/a | 13 mm (0.5 inches) | 13 mm (0.5 inches) |
| Offset distance | n/a | n/a | n/a | n/a | n/a | Adds 330 mm (13″) to the Offset Distance of the attached boom |
| Offset height | n/a | n/a | WindSensor cup height above horizontal boom arm: 38.1cm (15.0″) Thies cup height above horizontal boom arm: 38.6cm (15.2″) | None | Adds 362 mm (14.25″) to the Offset Height of the attached boom | Adds 114 mm (4.5″) to the Offset Height of the attached boom |
| Rod diameter | n/a | n/a | 3/4″ tubing | N/A | n/a | n/a |
| MATERIALS | ||||||
| Boom | n/a | n/a | Galvanized steel tubing | Aluminum | 13 mm (0.5 inch) galvanized steel tube | 13 mm (0.5 inch) galvanized steel tube |