Ultrasonic Wind Speed and Direction Smart Sensor

The Ultrasonic Wind Speed and Direction Smart Sensor is compact and rugged with no moving parts. Because this sensor is ultrasonic it is able to measure very low wind speeds, down to 0.4 m/s (compared to 1.0 m/s for our mechanical sensors). As with all Onset smart sensors, this sensor is plug-and-play with HOBO stations (RX3000, USB Micro Station and the U30-NRC). Because it is automatically recognized by HOBO stations, there is no need for programming, resulting in fast and easy deployment. The sensor is powered by its own built-in solar panel.

Features:

- Compact and rugged with no moving parts
- Plug-and-play with HOBO stations
- 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
- Affordably priced

In what environment does this sensor operate?

- This sensor operates in an outdoor environment.

What measurements does this sensor support?

- The S-WCG-M003 sensor supports the following measurement: Wind Speed, Gust Speed and Wind Direction

Specifications

Wind Speed/Gust:

- Measurement Range: 0 to 41.16 m/s (0 to 92.07 mph)
- Accuracy: +/- 0.8 m/s (1.79 mph) or +/-4% of reading, whichever is greater
- Resolution: 0.4 m/s (0.89 mph)

Wind direction:

- Measurement range: 0 to 359 degrees
- Accuracy: 0.2 to 3 m/s (0.44 to 6.7 mph): +/- 4 degrees, >3 m/s (6.7 mph): +/- 2 degrees
- Resolution: 1 degrees (0 to 359 degrees)
- Includes: North alignment tool, U-bolts with hex nuts, brackets, spacers, and lock nuts for mounting on a mast or cross arm

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
- Unit vector averaging used; vector components for each wind measurement are calculated every three seconds for duration of logging interval (see Measurement Operation)

Other specifications:

- Operating Temperature Range Without Icing: -15 to 55 C (5 to 131 F)
- Environmental Rating: Weatherproof
- Housing: Polyacetal
- Sensor length: 380 mm (14.96 inches)
- Sensor head diameter: 60 mm (2.36 inches)
- Sensor rod diameter: 16 mm (0.63 inches)
- Weight: 200 g (7 oz)
- Power Supply: Photovoltaic panel, LIFEP04 3.2 V -600 mAh battery
- Bits per Sample: 8 for each channel, 24 total
- Number of Data Channels: 3 (A single HOBO station can accommodate 15 data channels and up to 100 m (328 ft) of smart sensor cable (the digital communications portion of the sensor cables).
- Measurement Averaging Option: Automatic averaging (see Measurement Operation)
- Cable Length Available: 3 m (16.4 ft)
- Length of Smart Sensor Network Cable: 0.5 m (1.6 ft)