Ultrasonic Anemometer
WindObserver ultrasonic anemometers have a proven record of providing reliable data in critical applications. The product has been selected for use by commercial marine businesses and national navies across the world, as well as being deployed at a range of high volume international airports.
The WindObserver 90 has been developed for measuring higher wind speeds in extreme weather environments featuring 150 Watts of electrical heating power in the anemometer head. This anemometer has been designed to remain ice free in most freezing weather conditions. The sensor provides data via RS422/RS485 bidirectional link, which allows several units to be networked together and data logged on demand.
With innovative transducer design, this anemometer boasts a very high wind speed range of 0 - 90 m/s (0-201mph) and gives an output status indicating the validity of data, so that you can be confident that the instrument is providing accurate information. Constructed from Stainless steel this anemometer meets the stringent performance criteria specified by wind turbine manufacturers, airports, marine, oil and gas production, and meteorological organisations around the world.
- Heating power 7A @ 24VAC or DC (1W/cm²)
- 0-90m/s wind speed range
- Calibrated in Merlin Wind Tunnel
- Calibration traceable to OBUJPOBM standards
- IP66 rated stainless steel housing
- Connector or cable exit options
- Optional customer base mounts
- Averaging/gusts to WMO guidelines
| WIND SPEED | |
| Range | 0 - 90 m/s (0-201mph) |
| Starting threshold | 0.01 m/s |
| Accuracy* | ±2% @ 12 m/s, ±4% @ 90 m/s |
| Resolution | 0.01 m/s |
| Offset | ±0.01 m/s |
| DIRECTION | |
| Range | 0 - 360° |
| Dead band direction | None |
| Accuracy | ±2° @ 12 m/s |
| Resolution | 1° |
| MEASUREMENT | |
| Ultrasonic output rate | 1-4 Hz |
| Parameters | UV, Polar, NMEA |
| Units | m/s, knots, mph, kph, ft/min |
| Averaging | Flexible 1-3600 seconds |
| Block average | 0-3600s |
| POWER REQUIREMENT | |
| Anemometer only | 20 - 30 VDC (60mA max, 50mA average) |
| Heating | Max 7A @ 24 VAC or DC |
| DIGITAL OUTPUT | |
| Communication (Operat’n) | RS422/RS485 full duplex/half duplex |
| Baud rates | 1200, 2400, 4800, 9600, 19200, 38400 |
| Formats | 8 bit data; odd, even or no parity |
| Anemometer status | Supplied as part of standard message |
| MECHANICAL | |
| External construction | Stainless steel 316 |
| Size | Refer to diagram overleaf |
| Weight | 1.7kg (with 2m cable) 1.3kg (with connector) |
| ENVIRONMENTAL | |
| Protection class | IP66 (NEMA4X) |
| Humidity | 0% to 100% RH |
| Operating temperature | -55°C to +70°C (with heating) |
| Precipitation | 300mm/hr |
| EMC |
EN 61326-1: 2013, EN 60945: 2002 |
| Icing | MILSTD810F Method 521.2 Procedure I |
| APPROVALS | |
| Standards | Traceable to national standards |
| Site calibration | None required. Integrity check unit (Zero wind) supplied as optional extra |
