A wireless ultrasonic wind speed & direction sensor that works with HOBOnet. Compact and rugged, with no moving parts, this ultrasonic sensor can measure very low wind speeds, down to 0.4 m/s (compared to 1.0 m/s for our mechanical sensors). HOBOnet wireless sensors communicate data directly to the HOBO RX3000 or the HOBO MicroRX station or pass data through other wireless sensors back to the central station. They are preconfigured and ready to deploy, and data is accessed through HOBOlink, Onset's innovative cloud software platform.
Sensor Features
Compact and rugged with no moving parts
No starting threshold – suitable for low wind speeds
No wind direction dead band – accurate wind data in all directions
Powered by its own built-in solar panel
Wireless Features
900 MHz wireless mesh self-healing technology
450 to 600 meter (1,500 to 2,000 feet) wireless range and up to five hops
Up to 50 wireless sensors or 336 data channels per HOBO RX station
Simple button-push to join the HOBOnet wireless network
Onboard memory to ensure no data loss
Powered by rechargeable AA batteries and built-in solar panel
Wind speed and gust measurement range 0 to 41.16 m/s (0 to 92.07 mph)
Wind direction measurement range 0 to 359 degrees
Wind speed and gust accuracy ±0.8 m/s (1.79 mph) or ±4% of reading, whichever is greater
Wind direction accuracy 0.2 to 3 m/s (0.44-6.7 mph): ±4 degrees; >3 m/s (6.7 mph): ±2 degrees
Wind speed and gust resolution 0.4 m/s (0.89 mph)
Wind direction resolution 1 degree (0 to 359 degrees)
A wireless ultrasonic wind speed & direction sensor that works with HOBOnet. Compact and rugged, with no moving parts, this ultrasonic sensor can measure very low wind speeds, down to 0.4 m/s (compared to 1.0 m/s for our mechanical sensors). HOBOnet wireless sensors communicate data directly to the HOBO RX3000 or the HOBO MicroRX station or pass data through other wireless sensors back to the central station. They are preconfigured and ready to deploy, and data is accessed through HOBOlink, Onset's innovative cloud software platform.
Sensor Features
Compact and rugged with no moving parts
No starting threshold – suitable for low wind speeds
No wind direction dead band – accurate wind data in all directions
Powered by its own built-in solar panel
Wireless Features
900 MHz wireless mesh self-healing technology
450 to 600 meter (1,500 to 2,000 feet) wireless range and up to five hops
Up to 50 wireless sensors or 336 data channels per HOBO RX station
Simple button-push to join the HOBOnet wireless network
Onboard memory to ensure no data loss
Powered by rechargeable AA batteries and built-in solar panel
Specifications
HOBOnet Ultrasonic Wind Speed & Direction Sensor · RXW-WCG-922
Property
Value
Wind speed and gust measurement range
0 to 41.16 m/s (0 to 92.07 mph)
Wind direction measurement range
0 to 359 degrees
Wind speed and gust accuracy
±0.8 m/s (1.79 mph) or ±4% of reading, whichever is greater
Wind direction accuracy
0.2 to 3 m/s (0.44-6.7 mph): ±4 degrees; >3 m/s (6.7 mph): ±2 degrees
Wind speed and gust resolution
0.4 m/s (0.89 mph)
Wind direction resolution
1 degree (0 to 359 degrees)
Measurement definition
Wind speed readings are taken every three seconds for the duration of the logging interval (wind speed: average speed for the entire logging interval; gust speed: the highest three-second wind recorded during the logging interval); unit vector averaging used, vector components for each wind measurement calculated every three seconds for duration of logging interval
Sensor operating temperature range without icing
-15°C to 55°C (5°F to 131°F)
Mote operating temperature range
-25° to 60°C (-13° to 140°F) with rechargeable batteries; -40 to 70°C (-40 to 158°F) with lithium batteries
Radio power
12.6 mW (+11 dBm) non-adjustable
Transmission range
Reliable connection to 457.2 m (1,500 ft) line of sight at 1.8 m (6 ft) high; reliable connection to 609.6 m (2,000 ft) line of sight at 3 m (10 ft) high
Up to 50 wireless sensors or 336 data channels per one HOBO RX station
Logging rate
1 minute to 18 hours
Number of data channels
4
Sensor power source
Photovoltaic panel, LIFEP04 3.2 V -600 mAh battery
Mote power source
Two AA 1.2 V rechargeable NiMH batteries powered by built-in solar panel or two AA 1.5 V lithium batteries for operating conditions of -40 to 70° C(-40 to 158° F)
Battery life
With NiMH batteries: typical 3-5 years when operated in the temperature range -20° to 40°C (-4°F to 104°F) and positioned toward the sun (operation outside this range will reduce battery service life); with lithium batteries: 1 year, typical use
Memory
16 MB
Sensor dimensions
Length: 380 mm (14.96 inches); head diameter: 60 mm (2.36 inches); rod diameter: 16 mm (0.63 inches)
Cable length
3 m (9.8 ft)
Mote dimensions
16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches)
Sensor and cable weight
200 g (7 oz)
Mote weight
223 g (7.87 oz)
Materials
Sensor: Polyacetal; mote: PCPBT, silicone rubber seal
Environmental rating
Sensor and cable: Weatherproof; mote: IP67, NEMA 6
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