Gill Instruments Ltd
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WindObserver II Page 7 Issue 18
Doc. No. 1390-PS-0004 January 2009
4. SPECIFICATION
Measurement
Output 1, 2, 4, 5, 8, 10Hz
Parameters UV, Polar, NMEA, Tunnel
Units m/s, Knots, MPH, KPH ft/min
Averaging Flexible 1-3600 seconds
Wind Speed
Range 0 - 65m/s (0-145mph)
Accuracy ±2%@12m/s
Resolution 0.01m/s
Offset ±0.01m/s
Direction
Range 0 - 359°
Accuracy ± 2°
Resolution 1°
Sonic Temperature Output
Range -40°C to + 70°C
Anemometer Status Supplied as part of standard message
Starting Threshold 0.01 m/s
Dead Band Wind Direction None
Power Requirement
Anemometer only 9-30 V DC (40mA @ 12VDC), reverse voltage protected
Heating - Optional Allow 3A @ 22v to 30v (max) AC rms or DC
Digital Output
Communication RS422, full duplex, network facility
Baud rates 1200, 2400, 4800, 9600, 19200, 38400
Formats 8 data, odd, even or no parity
Analogue Output - Optional
Quantity 3 (speed, direction, status, SOS or Sonic Temperature)
Scale Multiples of ± 10m/s up to ± 70m/s
Type ± 2.5V, 0-5V or 4-20mA
V output resistance 60 Ohms
4-20mA loading 10-300 Ohms
Dimensions
Size 405mm x 210mm
Weight 1.5kg
Materials
External Construction Stainless Steel 316
Environmental
Moisture protection IP66 (NEMA4X)
Operating temperature -55°C to +70°C (heated version)
Humidity 5% to 100% RH
Precipitation 300mm/hr
EMC BS EN 50081-1: 1992 (Emissions class B)
BS EN 50082-2: 1992 (Immunity)
FCC class A
Icing MILSTD810E Method 521.1 Procedure 1
Standards Traceable to UK national standards
Site Calibration None required. (See Section 10.6 Zero Wind Check)
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