HOBOnet Ultrasonic Wind Speed & Direction Sensor
RXW-WCG-xxx HOBOnet Ultrasonic Wind Speed & Direction Sensor
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  • RXW-WCG-xxx Image 1
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Part Numbers
RXW-WCG-900
RXW-WCG-868
RXW-WCG-922
RXW-WCG-921

HOBOnet Ultrasonic Wind Speed & Direction Sensor

 

Important Info

A complete system requires at least one HOBO RX3000 Remote Monitoring Station, a HOBOnet Wireless Manager (RXMOD-RXW-xxx), and a HOBOnet Wireless Sensor, OR one HOBO MicroRX Station (which has an integrated HOBOnet Wireless Manager) and a HOBOnet Wireless SensorHOBOnet Wireless Repeaters (RXW-RPTR-xxx or RXW-RPTR-B-xxx) can be added to extend the range.

Other Products in this Series Learn More

Overview

Product Description 

The HOBOnet Wireless Ultrasonic Wind Speed & Direction Sensor is compact and rugged with no moving parts. Because this sensor is ultrasonic it 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-based software platform.

Highlighted Features 

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

In what environment does this sensor operate?

This sensor operates in an outdoor environment.

What measurements does this sensor support?

The RXW-WCG-xxx sensor supports the following measurement: Wind

The country of origin for this product is the United States. To see the full specifications for this product, please see our product manual found under the documentation tab if available.

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-921: 921 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 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
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 Federal Communication Commission RXW-WCG-900  
  CE Compliant RXW-WCG-868  
  Taiwan NCC Mark RXW-WCG-921  
  Australia and New Zealand Complicance RXW-WCG-922  
  • Sensor, along with zip ties and screws for mounting.

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