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 70 is a solid state, heated ultrasonic anemometer designed for use within the aviation industry and for more extreme weather conditions. The sensor has been accepted for service by both the FAA Federal Aviation Administration (USA) and the CAA Civil Aviation Authority (UK) for the observation and reporting of surface wind. This WindObserver meets the requirements of Annex 3 to the Convention on International Civil Aviation Organization (ICAO) when supplied as part of a suitable AWOS*.
With 150 Watts of electrical heating in the anemometer head producing 1 Watt/cm2 and tested in accordance with MILSTD810F, the unit is particularly suited to operate as part of Aviation Automatic Weather Observing Systems, which are often exposed to extreme weather conditions. Manufactured from stainless steel with no moving parts the sensor requires no on-site calibration and minimal maintenance.
Customer selectable vector rolling average and 3 second gust in accordance with WMO - No. 8 Seventh Edition 2008 ISBN 978-92-63-10008-5.
*Accepted by the FAA & CAA for the observation and reporting of surface wind as part of a suitable AWOS (Automatic Weather Observing System)
- FAA & CAA accepted* for airport applications
- Heating power 7A @24VAC or DC (1W/cm2)
- 0-70m/s wind speed range
- 0-360º wind direction range (no dead band)
- Calibration traceable to national standards
- IP66 rated stainless steel construction
- Optional base mounts/cable exit
- Averaging/gusts to WMO guidelines
| WIND SPEED | |
| Range | 0 - 70 m/s (0-156mph) |
| Starting threshold | 0.01 m/s |
| Accuracy | ±2% @12 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 - 4Hz |
| Parameters | UV, Polar, NMEA |
| Units | m/s, knots, mph, kph, ft/min |
| Average (Selectable) | Rolling average - 1, 2, 10 m.n, Gust - 3s |
| Block average | 0-3600s |
| POWER REQUIREMENT | |
| Anemometer only | 9 - 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% |
| Operating temperature | -55°C to +70°C (with heating) |
| Precipitation | 300mm/hr |
| EMC | EN 61326-1: 2013, & EN60945:2002 |
| Icing | MILSTD810F Method 521.2 Procedure I |
| APPROVALS | |
| Standards | Traceable to OBUJPOBM standards |
| Site Calibration | None required. Integrity check unit (Zero wind) supplied as optional extra |
