Gill Instruments Ltd
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WindObserver II Page 20 Issue 18
Doc. No. 1390-PS-0004 January 2009
6.6. Power supplies
All WindObserver II units
Sensor Supply: -
Voltage 9 to 30v DC
Current 60mA max. 50mA average
• The WindObserver II has reverse polarity protection.
Wind Observer II Units with Heating
Heater Supply: -
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.
• The heating (H command) is not enabled as a default condition. If heating is
required enabled then the H command must be set for H2.
• Each transducer is heated independently and will be active when ambient
temperature drops below approximately +15ºC each transducer will de-activate
when +25ºC threshold is reached.
The WindObserver II has reverse polarity protection.
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