The instruments of the series HD52.3D… are 2-axis ultrasonic static anemometers. 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. Measured quantities:
Wind speed and direction, U-V Cartesian components of wind speed
Wind Gust
Relative Humidity and temperature (optional)
Global solar radiation (optional)
Barometric pressure (optional)
Rainfall (optional)
The “Rainfall” and “Global solar radiation” options are alternatives (they can not be both present in the same instrument).
All models are equipped with a magnetic compass.
The avarage of wind speed and direction over a period configurable up to 10 mins is calculated.
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, both for wind speed and for direction, factory configurable among 4÷20mA (standard), 0÷1V, 0÷5V, 0÷10V (to be specified when ordering).
Accuracy (@ T = -40…+70 °C): ± (1.5 + 1.5% of measurement )%RH
Barometric Pressure (needs option 4):
Sensor: Piezoresistive
Measuring range: 300…1100 hPa
Resolution: 0.1 hPa
Accuracy: ± 0.5 hPa @ 20 °C
Solar radiation (needs option P):
Sensor: Thermopile
Measuring range: 0…2000 W/m2
Resolution: 1 W/m2
Accuracy: 2nd Class Pyranometer
Rainfall (needs option T):
Sensor: Tipping bucket
Resolution: 0.2 mm
Accuracy: 99% up to 120 mm/h
Maximum rainfall rate: 2000 mm/h
Collector area: 127 cm2
General features:
Power Supply: 10…30 Vdc
Power consumption: 26 mA @ 24 Vdc without heater; 8 W @ 24 Vdc with heater
Serial outputs: RS232, RS485 (¼ Unit Load), RS422 and SDI-12
Communication protocols:
NMEA, MODBUS-RTU, SDI-12, proprietary RS232 and RS485 Analog outputs 2 analog outputs, for wind speed and direction. Output at choice among 4…20 mA (standard), 0…1 V, 0…5 V and 0…10V (option 0…10V needs 15…30 Vdc power supply)
Wind speed averaging interval: Configurable from 1 s to 10 min
Electrical connection: 19-pole M23 male connector
Operating temperature: -40…+70 °C. Minimum temperature for the rainfall sensor 1 °C
Protection degree: IP 66
Survival speed: 90 m/s (60 m/s with rain gauge option)