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The Gill Instruments WindObserver II is a robust ultrasonic anemometer and wind sensor designed for accurate measurement of wind speed and wind direction. Using ultrasonic technology with no moving parts, the sensor provides reliable performance with reduced maintenance requirements compared with conventional cup or propeller-type anemometers.
The WindObserver II is suitable for marine vessels, offshore platforms, ports, meteorological stations, and industrial applications. Its compact and rugged construction is designed for continuous operation in demanding environmental conditions. The sensor can provide wind data through various communication and output interfaces, depending on the model configuration, allowing integration with marine monitoring, navigation, weather, and control systems.
| Parameter | Specification |
|---|---|
| Sensor Type | Precision solid-state ultrasonic anemometer |
| Wind Speed Range | 0–65 m/s (0–145 mph) |
| Wind Speed Accuracy | ±2% at 12 m/s |
| Wind Speed Resolution | 0.01 m/s |
| Wind Speed Offset | ±0.01 m/s |
| Starting Threshold | 0.01 m/s |
| Wind Direction Range | 0–360° |
| Wind Direction Accuracy | ±2° at 12 m/s |
| Wind Direction Resolution | 1° |
| Wind Direction Dead Band | None |
| Measurement Parameters | UV, Polar, NMEA and Tunnel |
| Measurement Units | m/s, knots, mph, km/h and ft/min |
| Output Rate | 1, 2, 4, 5, 8 or 10 Hz |
| Rolling Average | Selectable: 1, 2 or 10 minutes |
| Gust Measurement | 3 seconds |
| Block Average | 0–3600 seconds |
| Digital Communication | RS-422 / RS-485, full-duplex or half-duplex |
| Baud Rates | 1200, 2400, 4800, 9600, 19200 or 38400 |
| Digital Data Format | 8-bit data with odd, even or no parity |
| Anemometer Status | Included as part of the standard message |
| Analogue Outputs | 3 outputs: speed, direction, status or sonic temperature |
| Analogue Output Types | ±2.5 V, 0–5 V or 4–20 mA |
| Analogue Scale | Multiples of ±10 m/s up to ±70 m/s |
| Voltage Output Resistance | 60 Ω |
| 4–20 mA Load Resistance | 10–300 Ω |
| Power Supply – Anemometer | 9–30 VDC, approximately 40 mA at 12 VDC |
| Optional Heating | 3 A at 24 VAC or DC |
| Construction Material | Stainless Steel 316 |
| Protection Rating | IP66 / NEMA 4X |
| Operating Temperature | -55°C to +70°C with heated option |
| Humidity | Up to 100% RH |
| Precipitation Resistance | Up to 300 mm/hr |
| Icing Standard | MIL-STD-810F, Method 521.2 |
| Dimensions | 381 × 213 mm |
| Weight | Approximately 1.4 kg |
| Marine Approval | Lloyd’s Register Type Approved |
| Optional Accessories | Pipe mount and WindView display/logging software |
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