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The
active element is a sealed Hall effect sensor. Wind direction is
provided by a magnet attached to the vane, and which hovers over the
sensor. The E-Vane requires an input of 5 VDC and provides an analog
output of 0-5VDC.
It
represents a number of advantages over potentiometer vanes, including:
The
E-Vane requires 5 volts DC for power. It has three wires: ground,
power, and signal.
The
Inspeed e-Vane also includes a new locking feature which we should
have patented but didn't so we could get it to market sooner. It is a
way to lock the sensor so you can twist the vane and set
"North" (or zero output) to where-ever you wish. That means
that the offset bracket can be pointed in any direction you want,
unlike other manufacturers that force you to point the bracket to
North so it will read correctly. WIth the e-Vane, just mount the
vane, lock the sensor when the software (or your device) says North,
twist the vane until it points North, then release the sensor so it
is free to rotate. Simple!
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LabJack
U12 Weather Station
The
LabJack U12 is a USB based general purpose data acquisition and
control device . It comes with a free copy of DAQFactory Express
software, which allows the user to create custom screens, has data
logging and simple control scripts.
It
forms an ideal core for a home-grown weather station system using
the Vortex wind speed
sensor, the eVane
wind direction sensor and the
EI1050 Digital Temperature/Humidity Probe. Has plenty of extra
analogue inputs for other sensors and control outputs.
More
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