Ultrasonic Wind Speed & Direction Sensor

A complete system requires at least one HOBO RX3000 Remote Monitoring Station, a HOBOnet Wireless Manager (RXMOD-RXW-xxx), and a HOBOnet Wireless Sensor. HOBOnet Wireless Repeaters (RX-RPTR-xxx) can be added to extend the range.

Highlighted 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

868 MHz wireless mesh self-healing technology
450 to 600 meter wireless range and up to five hops
Up to 50 wireless sensors per RX3000
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

In what environment does this sensor operate?
This sensor operates in an outdoor environment.

What measurements does this sensor support?
The RXW-WCG-868 sensor supports the following measurement: Wind

Sensor	Wind Speed/Gust	Wind Direction
Measurement Range	0 to 41.16 m/s (0 to 92.07 mph)	0 to 359 degrees
Accuracy	±0.8 m/s (1.79 mph) or ±4% of reading, whichever is greater	0.2 to 3 m/s (0.44-6.7 mph):
±4 degrees

3 m/s (6.7 mph): ±2 degrees
Resolution | 0.4 m/s (0.89 mph) | 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
See Measurement Operation. | Unit vector averaging used; vector components for each wind measurement are calculated every three seconds for duration of logging interval (see Measurement Operation)
Operating Temperature Range Without Icing | -15°C to 55°C (5°F to 131°F)
Wireless 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
Wireless Data Standard | IEEE 802.15.4
Radio Operating Frequencies | RXW-WCG-900: 904-924 MHz
RXW-WCG-868: 866.5 MHz
RXW-WCG-922: 916-924 MHz
Modulation Employed | OQPSK (Offset Quadrature Phase Shift Keying)
Data Rate | Up to 250 kbps, non-adjustable
Duty Cycle | <1%
Maximum Number of Motes | 50 motes per one RX Wireless Sensor Network
Battery Type/
Power Source | Sensor: Photovoltaic panel, LIFEP04 3.2 V -600 mAh battery
Mote: 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 (see Deployment and Mounting), operation outside this range will reduce the battery service life
With lithium batteries: 1 year, typical use
Memory | 16 MB
Dimensions | Sensor length: 380 mm (14.96 inches)
Sensor head diameter: 60 mm (2.36 inches)
Sensor rod diameter: 16 mm (0.63 inches)
Cable length: 3 m (9.8 ft)
Mote: 16.2 x 8.59 x 4.14 cm (6.38 x 3.38 x 1.63 inches)
Weight | Sensor and cable: 200 g (7 oz)
Mote: 223 g (7.87 oz)
Materials | Sensor: Polyacetal
Mote: PCPBT, silicone rubber seal
Environmental Rating | Sensor and cable: Weatherproof
Mote: IP67, NEMA 6
Compliance Marks | RXW-WCG-900 |
| RXW-WCG-868 |
| RXW-WCG-922