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Overview
The WindSonic4 is a two-dimensional ultrasonic anemometer for measuring wind direction and speed. It provides an alternative to traditional mechanical cup and vane or propeller and vane anemometers. This sonic wind sensor outputs an SDI-12 signal that can be read a a compatible Campbell Scientific data logger.
The WindSonic4 is not recommended for conditions where rime, ice, or horizontal snow will occur. This sensor is not heated. Please contact Campbell Scientific for information on a heated 2-D sonic anemometer that will work in these conditions.
Note: The mounting equipment supplied with this sensor may vary depending on which Campbell Scientific regional office the sensor is ordered from.
Key Advantages
Minimizes routine maintenance costs
Technical Description
The WindSonic4 uses two pairs of orthogonally oriented transducers to sense the horizontal wind. The transducers bounce the ultrasonic signal from a hood, thus minimizing the effects of transducer shadowing and flow distortion.
Unlike mechanical anemometers, the WindSonic4 has no moving parts to be periodically replaced—minimizing routine maintenance costs.
Specifications
| Specification | Value |
|---|---|
| Applications | General: Rain with light snow; little or no riming or blowing sand; no salt spray. Extreme: Blowing sand; very little maintenance required; handles salt spray. |
| Sensor | 2-dimensional ultrasonic anemometer |
| Measurement Description | Wind speed and direction |
| Operating Humidity Range | <5% to 100% RH |
| Operating Temperature Range | −35° to +70°C |
| Storage Temperature Range | −40° to +80°C typical |
| Input Voltage | 9 to 30 Vdc |
| Typical Current Drain | <10 mA at 12 V |
| Measurement Frequency | 40 Hz, block averaged to a 1 Hz output frequency |
| Output Parameters | Polar (direction and speed) or orthogonal (Uₓ and Uᵧ wind) |
| Output Signal | SDI-12 version 1.3 |
| Diameter | 14.2 cm (5.6 in.) |
| Length | 16.0 cm (6.3 in.) |
| Weight | 0.5 kg (1.1 lb) |
Maximum Cable Length
| Configuration | Maximum Cable Length |
|---|---|
| 1 sensor connected to 1 port | 91.44 m (300 ft) |
| 2–10 sensors connected to 1 port | 60.91 m (200 ft) |
Wind Direction
| Specification | Value |
|---|---|
| Range | 0° to 359° (no dead band) |
| Accuracy | ±3° |
| Resolution | 1° |
Wind Speed
| Specification | Value |
|---|---|
| Range | 0 to 60 m/s |
| Accuracy | ±2% at 12 m/s |
| Resolution | 0.01 m/s |
| Weight | 3 lbs |
|---|---|
| Dimensions | 8 × 8 × 8 in |
