Wind Horizon 400 2-axis ultrasonic anemometer

DIGITAL and ANALOGUE OUTPUT and HEATING

The Wind Horizon 400 ultrasonic anemometer with digital and analogue output and heating, provides excellent cost / performance ratio for the reliable measurement of wind speed and direction. With no moving parts and rugged stainless steel construction the Wind Horizon 400 is suitable for use in harsh conditions. It is a rugged high performance sensor for the measurement of the horizontal wind flow.

Where icing is a problem, the heating will ensure continuity of data regardless of the weather and with both digital and analogue outputs ensures the sensors can be connected to any datalogger or monitoring equipment.

New heating technology provides better control and power consumption as it heats only the appropriate elements and only when it is needed, ensuring 100 percent data availability regardless of weather.

As the top model in he Wind Horizon range, the Wind Horizon 400 ultrasonic anemometer is the most flexible and capable of the range and can be connected to two different devices at the same time with excellent resolution and easy interfacing. For example one data output can be viewed instantaneously on a laptop or display and the other logged to a logger or SCADA system

The Wind Horizon 400 has the highest reliability on the market due to the combined data quality monitoring function and heating technology, which eliminates data fallout and ensures confidence in the measurements; and as there are no moving parts or running maintenance you can concentrate on the data and not the sensor.

Due to ultrasonic measurement technology the sensor provides excellent repeatability of data and error accuracy and also provides additional information such as virtual temperature.

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Features

• no moving parts
• maintenance free
• up to 20 Hz sampling rate
• heated measuring head for error-free operation down to -40o Faranheit
• digital and analogue outputs
• wind speed range: 0.01 - 60 m/s (0 - 134 mph)
• wind direction range: 0 - 359o or 0 - 540o
• high resolution and accuracy
• low 9-36 VDC power requirements
• virtual temperature output
• field calibration kit (option)
• 12 metre (39 ft) power and data cable

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What it does

The Wind Horizon 400 ultrasonic anemometer provides the following information in various data outputs which can be polled or output automatically:

• instantaneous and averaged data for the horizontal wind vectors
• horizontal wind speed and direction
• chart mode (provides 0-540º wind direction and speed values)
• NMEA value outputs

Data can be averaged by :

• scalar or vectoral
• clock synchronised or running average
• separate output rates and sampling times

Some other important features:

• user definable north orientation (range 0-359º alignment off axis)
• data quality control to perform confidence checks on raw data
• date / time stamps with several options
• check sum information
• calibration validity output monitoring

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Examples of data output

Normal data example (instantaneous). Every data string starts with a header line that consists of the string SNC followed by a space and 12 characters for the date/time stamp, another space and finally the UTC string ie:

SNC 940815090015 UTC

x = 1.83 y = -0.79 T = 20.17



SNC 940815090015 UTC AVE 600 SMP 10 AZI 0 SDQ 100 HTR

where:

AVE	the averaging time
SMP	the sampling rate in Hertz
AZI	the devise azimuth
SDQ	the sonic data quality
HTR	informs the user that the sensor head heating is turned on
x	mean x wind component in the sensor related orthogonal co-ordinate system (parallel to the black arrow on the electronic box); unit m/s
y	mean y wind component in the sensor related orthogonal co-ordinate system (horizontally perpendicular to x); unit m/s
T	mean temperature; unit ºC
vel	mean horizontal wind velocity; unit m/s
dir	mean horizontal wind direction (depends on setting of parameter AZ); unit°

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Specifications of the Wind Horizon 400 ultrasonic anemometer
Wind Speed
Range	0.01 - 60 m/s (0 - 134 mph)
Accuracy	+/- 3 % (full scale output)
Resolution	0.01 m/s (steps)
Wind Direction
Range	0 - 359o or 0- 540o
Accuracy	+/- 3o
Resolution	0.1o (steps)
Digital Output
Type	RS232 OR RS422 OR RS485
Sampling rate	20 Hz (selectable)
Averaging	up to 3600 seconds
Analogue Output
Type	0-10 V, 0-2- mA
Resolution	12 bit
Scalable	Yes
Heating
Power output	60 W
Type	PTC, 2 levels
Power
Requirements	9-36 VDC operation
Current draw	125 mA (@ 24 VDC)
Data
Sonic temperature	-40oC to 60oC (-40oF to 140oF) in non-condensing environments
Units of measure	m/s, knots, mph, km/h, oC
General
IP rating	IP67
Size	30 cm x 54 cm (11 x 21 inches)
Weight	3.4 kg (7.4 Ibs) depending on model
Materials:
sensor head	stainless steel (V4A)
electronic housing	powder-coated die-cast aluminium
Power and data cable	12 m (39 ft)
Optional items	Field calibration kit:   Mains adaptor  : BiralView software

This range is in continuous development therefore specifications may change without prior notice. E&OE

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Contact Biral for more information

To find out more about this instrument or to discuss your application requirements please do not hesitate to contact Biral.

• wwwmet@biral.com or click the Make Request button below the product photograph
• telephone to 01275 847787 (from the UK) or +44 1275 847787 (International)

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After Sales Support

Biral offers free advice and technical support for the lifetime of the instruments we sell. Once you have purchased the unit you can contact us for help:

• wwwmetsupport@biral.com
• telephone to 01275 847787 (from the UK) or +44 1275 847787 (International)

Product Information

• WH-400 Specifications.pdf
• ultrasonic anemometer brochure.pdf

Scientific Papers and Articles

• Metek 2-axis ultrasonic anemometers.pdf