Gill Instruments Ltd
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MaxiMet
Page 23
Issue 1
Doc. No. 1957-PS-000x
March 2015
5.
INSTALLATION
5.1.
General Installation Guidelines
Interference
As with any sophisticated electronics, good engineering practice should be followed to ensure
correct operation.
Always check the installation to ensure the MaxiMet is not affected by other equipment operating
locally, which may not conform to current standards, e.g. radio/radar transmitters, boat engines,
generators etc.
Do NOT mount the MaxiMet in close proximity of high-powered radar or radio transmitters. A site
survey may be required if there is any doubt about the strength of external electrical noise.
Guidelines –
Avoid mounting in the plane of any radar scanner – a vertical separation of at least 2m should be
achieved.
Radio transmitting antennas, the following minimum separations (all round) are suggested
VHF IMM – 1m
MF/HF – 5m
Satcom – 5m (avoid likely lines of sight)
Ensure the product is correctly earthed in accordance with this manual
Use cables recommended by Gill, keeping the length below the maximum allowed. Where the
cables are cut and re-connected (junction boxes, plugs and sockets) the cable screen integrity
must be maintained, to prevent the EMC performance being compromised.
Earth loops should not be created – earth the system in accordance with the installation
guidelines.
Ensure the power supply operates to the MaxiMet specification at all times.
Wind
Avoid turbulence caused by surrounding structures that will affect the accuracy of the MaxiMet
such as trees, masts and buildings.
The World Meteorological Organisation makes the following recommendation:
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.
It is important to ensure that the MaxiMet is mounted in a position clear of any structure, which
may obstruct the airflow or induce turbulence.
Mount MaxiMet so as to have a clear view of prevailing winds.
