The instruments of the series HD52.3D… are 2-axes ultrasonic static anemometers for the
measurement of:
• Wind speed and direction, U-V Cartesian components of wind speed,
• Relative Humidity and temperature (optional),
• Global solar radiation (optional),
• Barometric pressure (optional).
The available measurement options combine in a single instrument the main quantities of meteorological
interest, making the instrument like a compact and light meteorological station.
All models are equipped with a magnetic compass.
Wind speed and direction are determined by measuring the transit time of ultrasonic pulses
between two pairs of ultrasonic transducers.
RS232, RS485, RS422 and SDI-12 serial interfaces are available with NMEA, MODBUS-RTU
and SDI-12 communication protocols.
All versions have two analog outputs, for wind speed and direction, which are factoryconfigurable
within 4÷20 mA (standard), 0÷1 V, 0÷5 V or 0÷10 V (to be specified when ordering).
The heater option prevents the accumulation of snow and ice formation, allowing precise
measurements in all environmental conditions.
Mounting on ∅ 40 mm mast. The electric connection is performed through a M23 19-pole connector
situated on the bottom of the instrument.
The low power consumption of the instrument allows installation in remote sites, with power
supplied by photovoltaic panel and backup battery.
The absence of moving parts minimizes the instrument maintenance.
| Memory | 1GB Data Flash Memory |
| Operating Temperature | -40°C between +80°C |
| Wind Speed | |
| Used Sensor | Ultrasounds |
| Measurement Range | 0… 60 m / s |
| Resolution | 0.01 m / s |
| Accuracy | ± 0,2 m / s or ±% 2, the greatest (0… 35 m / s), ±% 3 (> 35 m / s) |
| Wind Direction | |
| Used Sensor | Ultrasound |
| Measurement Range | 0… 359,9 ° |
| Resolution | 0.1 ° |
| Accuracy | ± 2 ° RMSE from 1,0 m / s |
| Compass | |
| Used Sensor | Magnetic |
| Measurement Range | 0… 360 ° |
| Resolution | 0.1 ° |
| Accuracy | ± 1 ° |
| Air temperature | Needs Option( please ask) |
| Used Sensor | Pt100 |
| Measurement Range | -40… + 60 ° C |
| Resolution | 0.1 ° C |
| Accuracy | ± 0.15 ° C ± 0.1% |
| Relative Humidity | Needs Option( please ask) |
| Used Sensor | Capacitive |
| Measurement Range | 0 ... 100% RH |
| Resolution | % 0,1 |
| Accuracy | (@ T = 15… 35 ° C) ±% 1,5 RH (% 0… 90 RH), ±% 2 RH (remaining range) (@ T = -40… + 60 ° C) ± (% 1.5 + 1.5 of measurement)% RH |
| Barometric Pressure | Needs Option( please ask) |
| Used Sensor | Piezoresistive |
| Measurement Range | 300… 1100 hPa |
| Resolution | 0.1 hPa |
| Accuracy | ± 0,5 hPa @ 20 ° |
| Solar Radiation | Needs Option( please ask) |
| Used Sensor | Thermopile |
| Measurement Range | 0… 2000 W / m2 |
| Resolution | 1 W / m2 |
| Accuracy | 2. Sınıf Pyranometer |
| Monthly Time Deviation | ± 1 min. |
| Logging Time Range | 1' , 5' , 10' , 15' , ...60'....1440' |
| Interface | RS-232 , RS-485 , USB |
| Output | 4...20mA , RS-485 |
| LCD Screen | 128x64 Grafic Dot Matrix |
| LCD Operating Temperature | -20°C between +70°C |
| Keypad | 4 Button Keypad |
| Backup Battery | 3.6V Lithium (for RTC) |
| Protection | IP65 |
| Sensor Protection | IP64 |
| OperatingVoltage | 10 ........ 30 V |
