Ammonit’s standard is heated version. It can be used for both heated and non-heated system.
- New and improved version of First Class wind vane
- High level of measuring accuracy (0.5°) and resolution (0.35°)
- Output: 10-bit serial-synchronous (compatible with Ammonit Meteo-40 data loggers)
- Measurement range 0 … 360°
- Low current consumption (3.3V @ 1.4 mA)
The wind vane serves for the detection of the horizontal wind direction in the field of meteorology and environmental protection. The axis of the wind vane is running in ball bearings and carries a diametrically magnetized magnet at the inner end. The angle position of the axis is scanned contact-free by a magnetic angle sensor (TMR-Sensor, Tunnel Magneto Resistance) through the position of the magnet field. As the sensor is operated the magnetic saturation, effects by external magnetic fields can alm
| Characteristic | Description / Value |
|---|---|
| Measurement principle | Magnetic |
| Measurement range | 0 … 360° |
| Accuracy | ± 0.75° |
| Resolution | 0.35° |
| Survival speed | max. 85 m/s, 30 min |
| Starting threshold | < 0.5 m/s at 10° amplitude (acc. to ASTM D 5366-96) < 0.2 m/s at 90° amplitude (acc. to VDI 3786 Part 2) |
| Delay distance | < 1.8 m (acc. to ASTM D 5366-96) |
| Damping ratio | D > 0.3 (acc. to ASTM D 5366-96) |
| Quality factor | K > 1 |
| Output | 10-bit serial-synchronous (compatible with Ammonit Meteo-40 data loggers) |
| Operating voltage | 3.3 … 42 VDC |
| Operating voltage heating | 24 V DC/AC, 45 … 65 Hz (galvanically isolated from housing), max. 25 W |
| Current Consumption @ 12 V DC | 2.5 mA (without heating) |
| Ambient temperature | -50 … +80 °C |
| Connection | 8-pole plug connection for shielded cable in the shaft |
| Mounting | Mounting on mast 1” (DIN EN 10255; 1”= Ø 33.4 mm) 1 ½” with separate adapter (optional) |
| Material | Aluminum |
| Type of ball bearings | Metallic ball bearings |
| Weight | approx. 0.7 kg |
| Protection | IP 55 |
| Manufacturer | Thies |
