Sutron Corporation X-Link Operations & Maintenance Manual, Rev 1.63 5/24/2016 pg. 86
Wind sensors, sometimes referred to as anemometers, provide two readings:
wind speed and wind direction (sometimes referred to as azimuth). Wind speed
is expressed in units of velocity (mph, kph, etc), while wind direction is expressed
in degrees (0 to 360).
7.1.4.18.
Wind Type
Each wind measurement can be one of the following
Wind Direction Analog
Wind Direction SDI-12
Wind Speed Frequency
Wind Speed Analog
Wind Speed SDI-12
Wind is unlike all the other measurements in that it is a combination of two
measurements: one setup for wind direction and the other setup for wind speed.
In order to correctly set up a wind sensor, two measurements must be set up.
One measurement must be wind speed, and the other wind direction. Set up the
measurements in order, for example, make measurement one a wind speed
sensor and measurement two a wind direction sensor.
Both the wind speed and the wind direction measurements must have the
following fields set up exactly the same:
Measurement Time
Measurement Interval
Averaging Time
Sampling Interval
If the fields are not set up exactly the same way, X-Link will show an error, Bad
Wind Setup.
Additional settings will appear based on the
Wind Type
chosen. Analog types will
allow the selection of analog input and warmup time. SDI-12 types will allow SDI-
12 command and parameters to be chosen.
7.1.4.19.
Wind Averaging
This setting can be set to
Scalar
or
Vector
.
Scalar Speed:
o
Mean Speed Scalar – This is the scalar wind speed, not taking direction
into account. The scalar average of 10mph for an hour and 20mph for an
hour is 15mph, regardless of changing direction.
Scalar Direction:
