Horizontal-Head Anemometer

HS-50

  • Precision 3-axis ultrasonic anemometer
  • 0-45m/s wind speed, 0-359° wind direction
  • U, V, W Vector Outputs
  • 50Hz Output Rate
  • Horizontal Head for Minimal Flow Disturbance
sonic anemometer

HS-50 Horizontal-Head Ultrasonic Anemometer

The HS-50 horizontal-head anemometer has been designed for scientific research applications requiring accurate 3-axis wind speed and direction information.

This instrument utilises advanced ultrasonic measurement technology, with a unique horizontal head design that allows for more accurate measurement of vertical flows with minimal interruption from the anemometer geometry. The head features a built-in inclinometer for simple positioning of the instrument on a tower or mast. A separate electronic unit allows easy access to the PRT and 6 analogue inputs.

HS-50 will monitor wind speeds of 0-45m/s, with a fast sampling rate of 50Hz. The instrument can be positioned close to the ground or to crop and tree canopies for accurate measurement of surface turbulence.

HS-50 features a rugged stainless steel construction, which ensures long term stability and suitability for use in extreme environments.

For applications where a faster 100Hz data output rate is required the HS-100 is recommended.

HS-50 Research Anemometer Technical Information

  • Key Features
  • Specifications
  • Documentation
  • Precision 3-Axis Sonic Anemometer
  • Stainless Steel Construction
  • Horizontal Head for Minimal Flow Disturbance
  • 50Hz Output Rate
  • 0-45m/s wind speed
  • 0-359° wind direction
  • U, V, W Vector Outputs
Wind Speed Specifications
Range
0-45m/s
Accuracy
<1.0% RMS
Resolution
0.01m/s
Wind Direction Specifications
Range
0-359º
Accuracy
<±1.0º RMS
Resolution
Speed of Sound
Range
300 - 370m/s
Resolution
0.01 m/s
Accuracy
< ±0.5% @ 20ºC
Ultrasonic Measurement
Ultrasonic Output Rate
50Hz
Output Formats
UVW, Speed of Sound
Digital Output
Communication
RS422 full duplex, 8 data bits, 1 stop bit, no parity
Baud Rates
2400 - 115200
Output Rate
Selectable 0.4 to 50Hz
Analogue Outputs (via supplied PCIA unit)
Quantity
7 (U,V,W, SOS, PRT plus 2 analogue outputs)
Scale
±10, ±20, ±30, ±60 m/s
Update Rate
0.4 to 50Hz
Range and Resolution
±2.5V, 14 bits
Accuracy
<0.25% of FSR
Analogue Inputs
Quantity
6 differential inputs
Sampling Rate
50Hz
Range and Resolution
±5V, 14 bits
Accuracy
<0.1% of FSR
Inclinometer
Range
±20º
Resolution
0.01º
Null Repeatability
±0.15º
Accuracy
±0.3º (from -10º to +10º of inclination)
PRT Input (PRT100 not included)
Input Resolution
0.01ºC
Input Accuracy
<0.01ºC (0ºC to 50ºC)
<0.15ºC (-40ºC to +60ºC)
Power Requirement
Anemometer
9-30V DC (<150mA @ 24V DC or 300mA @ 12V DC)
Environmental
Protection Class
IP65
Operating Temperature
-40ºC to +60ºC
Precipitation
300mm/hr
EMC
Emissions BS EN 50081-1 : 1992
Immunity BS EN 50082-1 : 1992

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