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RXW Ultrasonic Wind Speed and Direction Sensor

RXW Ultrasonic Wind Speed and Direction Sensor
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RXW Ultrasonic Wind Speed and Direction Sensor
1,638.31€
Ex Tax:1,342.88€
  • Model: RXW-WCG-868
  • Weight: 223.00g
  • Dimensions: 8.59cm x4.14cm x16.20cm
  • MPN: RXW-WCG-868

Overview

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

  • 868 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

Sensor
Accuracy

Wind Speed / Gust±0.8 m/s (1.79 mph) or ±4% of reading, whichever is greater
Wind Direction
0.2 to 3 m/s (0.44-6.7 mph): ±4 degrees; >3 m/s (6.7 mph): ±2 degrees

Measurement Definition

Wind Speed / Gust:

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


Wind Direction:

Unit vector averaging used; vector components for each wind measurement are calculated every three seconds for duration of logging interval

Measurement Range

Wind Speed / Gust0 to 41.16 m/s (0 to 92.07 mph)
Wind Direction
0 to 359 degrees

Operating Temperature Range Without Icing

-15°C to 55°C (5°F to 131°F)

Resolution

Wind Speed / Gust0.4 m/s (0.89 mph)
Wind Direction
1 degree (0 to 359 degrees)

Wireless Mote
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

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)

Data Rate

Up to 250 kbps, non-adjustable

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)

Duty Cycle

<1%

Environmental Rating

Sensor and cable: Weatherproof
Mote: IP67, NEMA 6

Logging Rate

1 minute to 18 hours

Materials

Sensor: Polyacetal
Mote: PCPBT, silicone rubber seal

Maximum Number of Motes

Up to 50 wireless sensors or 336 data channels per one HOBO RX station

Memory

16 MB

Modulation Employed

OQPSK (Offset Quadrature Phase Shift Keying)

Number of Data Channels

4

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 Operating Frequencies

866.5 MHz

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

Weight

Sensor and cable: 200 g (7 oz)
Mote: 223 g (7.87 oz)

Wireless Data Standard

IEEE 802.15.4