W8/W6 Series Propeller-type Wind Speed/Direction Sensors (Incl. Output)
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OVERVIEW

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.

SPECIFICATIONS

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
Accuracy
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