Wind Direction 3590/3590EX (averaging)0 pages

Wind Direction 3590/3590EX
(averaging)
A sensor for measuring average wind direction in
a sampling interval. It is designed to be used with
Aanderaa Sensor Scanning Units, Dataloggers or
Display units.

This sensor consists of a light wind vane
pivoted on top of a housing. Inside the housing
a compass is magnetically coupled to the vane.
The sensor can be mounted directly on the
Sensor Arm of the Automatic Weather Station
2700, Data Bouy 4700, or on different types of
sensor brackets from Aanderaa and on a 25 mm
O.D. vertical aluminum tube. When installed
on brackets or tubes, the sensor must then be
connected to the SmartGuard datalogger or
Display Unit by a separate cable.
When direction is to be read, the compass will
read out the average reading since the last
reading was taken. The compass consists of
a sensing element mounted on an electronic
card. In the sensing element is a follower
magnet which follows the magnet on the wind

vane. Four Hall elements measure the direction
every second and a micro controller on the
electronic card calculates the average direction
in the measuring period.
The housing is furnished with an N mark that
must be orien­
tated towards North or to a
reference point like a ships center-line for an
ordinary degrees indication. When properly
orien­
tated this sensor will cause the datalogging system to give a raw data reading of 0,
256, 512 and 768 for wind blowing from the
North, East, South and West respectively.
A non-averaging version designated 3590B
is also available. This sensor will only give a
momentary value every time the sensor is read.
To avoid galvanic corrosion do not fasten the
sensor to other metals than aluminum.

D300 - JAN 2013