DAVIS anemometer adapter for HOBOnet network RXW-WCF-868

THE'davis anemometer adapter is one wireless sensor that works with HOBOnet to record the wind speed, wind gusts and wind direction. The sensors wireless HOBOnet communicates data directly to HOBO RX3000 or to hOBO MicroRX station or transmit data via other wireless sensors to the central station.
They are preconfigured and ready for deployment, and data are accessible via HOBOlink, the innovative software platform based on cloud of'Onset.

Sensor characteristics:

- Provides the average wind speed, the maximum wind gust of 3 seconds and the average wind direction for the measurement interval
- Designed to meet World Meteorological Organization (WMO) guidelines

1. Wind speed / gust:

- Measuring range: 0 to 76 m/s (0 to 170 mph)
- Accuracy: ±1.1 m/sec (±2 mph) or ±5% of reading according to the highest value
- Resolution: 0.5 m/s (1.1 mph)
- Starting threshold: ≤ 1 m/s (2.2 mph)
- Steering radius: 108 mm (4.25 inches)
- Definition of measurement: the cup revolutions are accumulated every three seconds during the recording interval.
Wind speed: average speed for the full recording interval.
Speed of gust: the highest wind over three seconds recorded during the recording interval.

2. Wind direction:

- Measuring range: 0 to 355 degrees
- Accuracy: ±7 degrees
- Resolution: 1.4 degrees (0 to 355 degrees)
- Starting threshold: 1 m/s (2.2 mph)
- Steering radius: approximately 135 mm (5.25 inches)
- Definition of measurement: the unit vector average used, vector components for each wind measurement are calculated every three seconds for the duration of the recording interval.

Additional sensor features:

- 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) not adjustable
- Transmission range:
Reliable connection to a 457.2 m (1,500 ft) sight line at a height of 1.8 m (6 ft)
Reliable connection to a 609.6 m (2 000 ft) sight line at a height of 3 m (10 ft)
- Wireless data standard: IEEE 802.15.4
- Radio operating frequencies RXW-WCF-868: 866.5 MHz
- Modulation employed: OQPSK (decalation of modulation by quadrature phase displacement)
- Data flow rate: up to 250 kbps, not adjustable
- Service cycle: - Maximum number of points: up to 50 wireless sensors or 336 data channels per HOBO RX station
- Log rate: 1 minute at 6 p.m
- Number of data channels: 4
- Type of battery / power source:
2 NiMH rechargeable AA 1.2 V, powered by an integrated solar panel
or
2 AA 1.5 V lithium batteries for operating conditions of -40 to 70 °C (-40 to 158 °F)
- Battery life:
With NiMH batteries : 3 to 5 years typical when used in a temperature range of -20° to 40°C (-4°F to 104°F) and positioned towards the sun (see Deployment and mounting), operation outside this range will reduce battery life
With lithium batteries : 1 year, typical use
- Memory: 16 MB
- Dimensions:
Sensor : 470 x 191 x 121 mm (18,5 x 7,5 x 4,75 inches)
Cable length : 3 m (9.8 feet)
Sensor : 16,2 x 8,59 x 4,14 cm (6,38 x 3,38 x 1,63 inches)
- Weight:
Sensor and cable: 1,332 kg (2 lb, 15 oz)
Particle: 223 g (7.87 oz)
- Materials:
Sensor : Polycarbonate suction cups, stainless steel waterproof bearing, UV-resistant ABS wheelbarrow and black anodized aluminium anemometer arm
Wireless sensor : PPCBT, silicone rubber seal
Environmental Assessment: IP67, NEMA 6

Wireless Features:

- 868 MHz wireless mesh self-healing technology
- Wireless range from 450 to 600 metres (1,500 to 2,000 feet) and up to five jumps
- Up to 50 wireless sensors or 336 data channels per HOBO RX station
- Just press a button to join the HOBOnet wireless network
- Onboard memory to avoid data loss
- Powered by rechargeable AA batteries and integrated solar panel