Gill Instruments Ltd
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WindObserver II Pipe Mount
Page 16
Issue 04
Doc. No. 1390-PS-0009
August 2009
6.5. Mechanical installation
Before installing, a bench system test is recommended (see Section 6.2).
All the time the WindObserver II (Pipe Mount) is not in its final location, it
should be protected from damage by keeping it in the original packaging as
long as possible, treating it as a delicate instrument.
Location
It is important to ensure that the WindObserver II (Pipe Mount) is mounted in a position
clear of any structure, which may obstruct the airflow or induce turbulence.
Do NOT mount the WindObserver II (Pipe Mount) 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. (
See Section 6.1)
Orientation
The WindObserver II (Pipe Mount) must be mounted vertically with the cable exit at the
bottom.
Mounting bracket
It is recommended that the WindObserver II (Pipe Mount) mounting pipe be manufactured
from stainless steel 316, to prevent possible galvanic corrosion.
Stainless steel 316 fixings (supplied) must be used.
6.6. Power supplies
All WindObserver II (Pipe Mount) units
Voltage
9 to 30v DC
Current
60mA max. 50mA average
Heating
Voltage
22V to 30V (max) AC RMS or DC.
Current
allow for 3A.
The AC Supply must be isolated from Mains Supply.
The heating module requires a separate power supply.
Heater Cable length should be minimised to avoid cable volt drops and ensure
maximum voltage received at the Anemometer.
Each transducer is heated independently and will be active when ambient
temperature drops below approxi15ºC each transducer will de-activate
when +25ºC threshold is reached.
The WindObserver II has reverse polarity protection.
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