WindSonic Doc No 1405 PS 0019 Issue 25 February 2017
16
7 INSTALLATION
Do NOT remove the black “rubber” transducer caps. Warranty is void if the coloured
security seal is damaged or removed.
7.1 Installation Guidelines
The WindSonic has been designed to meet and exceed the stringent standards listed in its
specification. Operating in diverse environments all over the world, WindSonic requires no
calibration and adjustment whatsoever.
As with any sophisticated electronics, good engineering practice should be followed to
ensure correct operation.
Always check the installation to ensure the WindSonic is not affected by other
equipment operating locally, which may not conform to current standards, e.g.
radio/radar transmitters, boat engines, generators etc.
Guidelines –
o
Avoid mounting in the plane of any radar scanner – a vertical separation
of at least 2m should be achieved.
o
Radio transmitting antennas, the following minimum separations (all
round) are suggested
VHF IMM – 1m
MF/HF – 5m
Satcom – 5m (avoid likely lines of sight)
Use cables recommended by Gill. If cables are cut and re-connected incorrectly
(perhaps in a junction box) then EMC performance may be compromised if cable
screen integrity is not maintained.
Earth loops should not be created – wire the system in accordance with the
installation guidelines.
Ensure the power supply operates to the WindSonic specification at all times.
Avoid turbulence caused by surrounding structures that will affect the accuracy of the
WindSonic such as trees, masts and buildings. Ideally sensors should be mounted on the
prevailing wind side of the site.
The WMO make the following recommendations:
The standard exposure of wind instruments over level open terrain is 10m above the
ground. Open terrain is defined as an area where the distance between the sensor and
any obstruction is at least 10 times the height of the obstruction.
If mounting on a building then theoretically the sensor should be mounted at a height of 1.5
times the height of the building.
If the sensor is to be mounted on a mast boom, part way up a tower or mast, then the boom
should be at least twice as long as the minimum diameter or diagonal of the tower. The
boom should be positioned on the prevailing wind side of the tower.
WindSonic Doc No 1405 PS 0019 Issue 25 February 2017
17
7.2 Bench system test
Note: Prior to physically mounting the WindSonic in its final location, we
strongly recommend that a bench system test is carried out to confirm the
system is configured correctly, is fully functional and electrically
compatible with the selected host system and cabling (preferably utilising
the final cable length). The required data format, units, output rate, and
other options should also all be set up at this stage.
7.3 Electrical
7.3.1 Cable
Cable type
A RS422 compatible cable should be used, with the number of twisted pairs matching the
application.
Generic description
– Twisted pairs with drain wire, screened with aluminised tape,
with an overall PVC sheath of 6mm-12mm outer diameter. Wire size 7/0.2mm (24 AWG).
The table shows some suitable manufacturers’ references; other manufacturers’ equivalents
can be used.
Application
No. of pairs
Gill ref.
24 AWG
Belden ref.
24 AWG
Batt
electronics
ref.
24 AWG
WindDisplay
2
-
9729
-
RS 232
3
026-02660
9730
91030
RS 422
4
026-03156
9728
91199