R3A-100 Research range ultrasonic anemometer

R3A-100 Research range 3-axis ultrasonic anemometer

The R3A-100TM anemometer is Gill’s class-leading 3-axis anemometer ideal for scientific research applications, with a fast sampling rate of 100Hz.

This 3-axis ultrasonic anemometer is used extensively for the determination of fluxes using the Eddy Covariance method.

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Product Description

R3A-100 Research range 3-axis ultrasonic anemometer

R3A-100 will monitor wind speeds of 0-45m/s, with analogue, sonic temperature, the speed of sound and U, V, W vector outputs provided as standard and optional analogue and PRT inputs available.

The R3A-100 is of aluminium/carbon fibre construction and will operate effectively in environmental temperatures from -40°C to +60°C. Optional accessories are available such as cables, sensor input units (analogue inputs) and power supplies.

 

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Technical specs

Features:
  • 3-axis research anemometer
  • U, V, W vector outputs
  • 100Hz output rate
  • 0-45 m/s wind speed
  • 0-359° wind direction
  • Sonic temperature output
  • Aluminium/Carbon fibre construction
  • Custom calibration provided as standard
Applications:
  • Wind Turbulence Measurement
  • Component Wind Velocity UVW
  • Wind Profiling

Documents

Download R3A-100 Spec
Download R3A-100 Manual

 

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Product Features

Wind Speed

Range:

  • 0-45m/s
Resolution:
  • 0.01 m/s
Accuracy:
  • <1% RMS

Wind Direction

Range:

  • 0 - 360°

Resolution:
Accuracy:
  • <±1° RMS

Speed of Sound

Range:

  • 300-370m/s
Resolution:
  • 0.01 m/s
Accuracy:
  • < ±0.5% @ 20°C

Measurement

Ultrasonic output rate:

  • 100Hz
Parameters:
  • UVW, Speed of Sound

PRT Input

Input resolution

  • 0.01°C

Input accuracy:
  • <0.01°C (0°C to +50°C)
  • <0.15°C (-40°C to +60°C)

 

Digital Output

Communication:

  • RS422 full duplex, 8 data bits, 1 stop bit, no parity

Baud Rates:
  • 2400 - 115200

Output rate:

  • Selectable 0.4 to 100 Hz

Analogue Outputs - via supplied PCIA

Quantity

  • 7 (U, V, W, SoS, PRT plus 2 analogue outputs)

Scale
  • ±10, ±20, ±30, ±60 m/s

Update rate
  • 0.4 to 100 Hz

Range and resolution
  • ±2.5V, 14 bits

Accuracy
  • <0.25% of FSR

Analogue Inputs - Requires SIU

Quantity

  • 6 differential inputs

Sampling rate

  • 100 Hz

Range and resolution
  • ±5V, 14 bits

Accuracy
  • <0.1% of FSR

Environmental

Protection Class

  • IP65

Operating Temperature
  • -40°C to +60°C

EMC
  • BS EN 50081-1: 1992 (Emissions)
  • BS EN 50082-1: 1992 (Immunity)
Precipitation
  • Operation to 300mm/hr

Suitable
  • Exposure to a marine environment

Inclinometer (optional)

Range and resolution

  • ±20°C, 0.01°

Null repeatability

  • ± 0.15°

Accuracy

  • ±0.3° (from -10° to 10° of inclination)

Power Requirement

Anemometer
  • 9-30 VDC

    (<150mA @ 24 VDC or 300mA @ 12 VDC)