RXW Ultrasonic Wind Speed and Direction Sensor
- 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.
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 |
| Measurement Definition | Wind Speed / Gust: Wind speed readings are taken every three seconds for the duration of the logging interval
Unit vector averaging used; vector components for each wind measurement are calculated every three seconds for duration of logging interval |
| Measurement Range | Wind Speed / Gust: 0 to 41.16 m/s (0 to 92.07 mph) |
| Operating Temperature Range Without Icing | -15°C to 55°C (5°F to 131°F) |
| Resolution | Wind Speed / Gust: 0.4 m/s (0.89 mph) |
| 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 |
| 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) |
| Duty Cycle | <1% |
| Environmental Rating | Sensor and cable: Weatherproof |
| Logging Rate | 1 minute to 18 hours |
| Materials | Sensor: Polyacetal |
| 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 |
| 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 |
| Weight | Sensor and cable: 200 g (7 oz) |
| Wireless Data Standard | IEEE 802.15.4 |
