Gill MetPak II, User Manual

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MetPak II User Manual
Last Change
©
Gill Instruments Ltd
20 August, 2010 Page 7
2. Installation
MetPak II has been designed to meet and exceed the stringent standards listed in
its specification (see page i).
2.1 Pre-Installation Checks
As with any sophisticated electronics, good engineering practice should be
followed to ensure correct operation:

Ensure the MetPak II will not be affected by other equipment operating
locally, which may not conform to current standards, e.g. radio/radar
transmitters, generators etc.

Avoid mounting in the plane of any radar scanner – a vertical separation of
at least 2m should be achieved.

When installing MetPak II near radio transmitting antennas, ensure that the
mounting position fulfills the following minimum separations (all round):

VHF IMM – 1m
 MF/HF – 5m

Satcom – 5m (avoid likely lines of sight)

Use cables recommended by Gill (see page 8). 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.

Avoid earth loops – wire the system in accordance with these installation
guidelines.

Ensure that the power supply operates to the MetPak II specification (see
page i) at all times.

Avoid turbulence caused by surrounding structures that will affect the
accuracy of the sensors such as trees, masts and buildings. 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.

Keep away from building exhaust vents, machinery and motors.