W8/W6 Series Propeller-type
Wind Speed/Direction Sensors (Incl. Output)
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Sensors in the W8/W6 series directly output both digital and analog signals for wind speed and direction. Signal pathways for wind speed and direction are brushless, a specially designed approach that allows for use of a transmissive photointerrupter, which obtains a more stable output than a reflective photointerrupter. An even more affordable analog-only model is also available.
Model Brushless encoder
Speed sensor Brushless optical pulse-type propeller
Direction sensor Rotary encoder-type vane
Output RS-232C or RS-422, 0-1 V DC or 0-5 V DC
Startup threshold 0.4 m/s or less than 2 m/s
Weatherability Winds of 90 m/s or greater
Speed High-speed winds: ±0.5 m/s at winds 10 m/s or less; ±5% at winds greater than 10 m/s
Low-speed winds: ±0.3 m/s at winds 5 m/s or less; ±5% at winds greater than 5 m/s
Direction ±5°
Power source 12 V DC
Power consumption 170 mA or less
Operating range -10 to 50°C
Materials Propeller: polycarbonate resin
Body: polycarbonate resin
Vane: FRP (glass fiber-reinforced)
Paint Munsell color 8YR 7.3/1.3
Weight Approx. 3.0 kg
Inspections In-house or Japan Meteorological Agency