First Class Wind Speed and Direction System

This First Class wind speed and direction system is designed for the measurement of the horizontal component of the wind speed for meteorological applications, siteevaluation and the measurement of capacity characteristics of wind power systems.

The system includes high specification mechanical cup and vane anemometers which can be mounted on an appropriate traverse / bracket for use on masts and  weather stations etc.

The system has defined and optimised, dynamic behaviour even in high turbulence intensities as well as minimal over-speeding and a low starting speed.

The data is output as digital signals and can be recorded using a PC or Thies data logger. If you are interested in a display please see refer to the digital wind speed and wind direction displays listed under accessories below.

For winter operation the instrument is equipped with electronically regulated heating which guarantees smooth running of the ball bearings and prevents the moving parts from icing-up

Unheated  System
First Class wind SPEED sensor, model number 4.3350.10.000
First Class wind DIRECTION sensor, model number 4.3150.10.000

Heated System
First Class wind SPEED sensor,  model number 4.3350.00.000
First Class wind DIRECTION sensor,  model number 4.3150.00.000

Download spec sheet (pdf)

Features

• extremely wide wind speed measurement range

• best accuracy of any cup and vane system

• excellent response in turbulent flows, low starting speeds and over speeding wind situations

• aluminium construction for durability

• available in heated and unheated versions

What it Does

The First Class wind speed and direction system has a sensitive wind direction vane and 3 rotating cups that move around a high quality bearing system providing a set amount of rotations for each wind speed. The amount of rotations are directly proportional to wind speed and this allows this sensor to be integrated into a wide variety of stations or logging systems.

Examples of data output

The wind speed data is output in the form of a rectangular Hz signal (example 1000 Hz at 112 mph).

The wind direction data is output as a digital signal with values between 0-360º.

Specifications for First Class Wind SPEED Sensors
model 4.3350.10.000 unheated and 4.3350.00.000 heated

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

Specifications for First Class Wind DIRECTION Sensors
model 4.3150.10.000 unheated and 4.3150.00.000 heated

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

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Accessories

Available as accessories with the First Class series cup and vane anemometers are the following digital wind speed and direction displays. Additionally mounting adapters and cabling are available on request.

1. Digital wind speed and direction display model 4.3250.xx.000

Using a RS422 interface to connect to the wind speed and direction sensors the displays indicate the wind direction in a circle of 72 LED luminous bars and the speed by 7 segment LEDs.

a) The model 4.3250.xx.000 provides

the minimum and maximum wind speed values can be indicated by two other digit displays.

Display options of the Wind Speed:

• instantaneous value or

• 2 min mean value and maximum value or

• 10 min mean value and maximum value

Display options of the Wind Direction:

• instantaneous value or

• 2 min mean value and variation or

• 10 min mean value and variation

The calculation of the mean values and maximum values is carried out in accordance to the ICAO standards. These displays together with the First Class sensors are suitable for airfield use.

2. Digital wind speed and direction display models 4.3251.xx.000

This model is designed for use on ships. It is similar to the 4.3250.xx.000 above except that it has a direction circle divided in red and green LEDs according to port side and starboard.

b) The model 4.3251.xx.000 provides

Display options of the Wind Speed:

• instantaneous value

Display options of the Wind Direction:

• instantaneous value or

• delayed or

• instantaneous value and variation or

• delayed and variation

Display natively provides "relative" wind speed and direction values, however the display has inputs for additional ships information to provide "true" wind speed and direction values.

Specifications for both Digital Wind Speed Displays

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

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