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Calypso Davis Compatible User Manual page 3

Ultrasonic wind sensor

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3. Technical specifications
(continuation)
3.6 Power
· 2xAA, 3.6V Lithium primary
batteries (duration 6 years)
3.7 Attached cable
The Davis compatible ultrasonic wind sensor
incorporates 12m of cable between the wind sensor
and the box.
50cm of cable terminated in RJ-11 comes out of the
box.
3.8 Connections
· Modular Connector (RJ-11)
3.9 Internal Connections
Inside the box there are two connectors, one where
is connected the wind sensor and other where is
connected the cable for the Davis Station.
Image 6. Wire connections.
Davis compatible unit connections:
Black
Green
WIND Speed
WIND Direction
Red
Yellow
GND (Power -)
VCC (Power +)
Wind sensor connections:
Brown
Yellow
DATA Rx
VCC (Power +)
White
Green
GND (Power -)
DATA Tx
3.10 Sensors
· Ultrasonic transducter (4x)
The wind sensor has been designed to avoid any
mechanical parts to maximize reliability and
minimize maintenance.
The transducers communicate between themselves
two by two using ultrasonic range waves. Each
couple of transductors calculates the signal delay
and gets information about both, wind direction and
wind speed.
3.11 Wind
· Speed Range: 0-40 m/s
information
· Direction Range: 0-360 º
Davis Compatible
User manual
3.12 Easy mount
The wind sensor has lateral and inferior female thread. It can be mounted either on a plate (inferior
screws) or on a tube (lateral screws).
North mark position
Make sure the north mark is perfectly aligned
M4x0,5
Mounting accessories
Pole mount up to 52 mm
Aluminio and Carbon Fiber poles
The box can be attached to the pole with cable ties or similar.
Davis Compatible
User manual
- 3 x M4 lateral female thread
- 3 x M4 inferior female thread
M4x0,5
Adapter to Poles up to 39mm
Flat mount

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