Anemometer, 3-Cup Wired, Reed Switch Signal, ET-3250

Anemometer using a three-cup design. Designed for reliable operation and long life. The reinforced injection molded cups can withstand high speed wind gusts. The rotor shaft is beryllium copper which provides corrosion resistance and excellent operating temperature range with low friction, long life Rulon bearings. The anemometer enclosure is comprised of injection molded polycarbonate resin with embedded brass assembly hardware to provide IP65 rated weather resistance.   Applications Wind resource assessment instrumentation Research measurements in environmental studies Engineering studies on wind effects on infrastructure Control input for wind sensitive applications Features Industry compatible wind sensor Meets IP55 standards Corrosion resistant materials Specifications Materials: Cups and sensor body are injection molded black polycarbonate.       Rotor shaft is fully hardened beryllium copper.       Bearings are self-lubricating Rulon bearings.       The oversized upper bearing is centered in the plane of cup thrust for       optimal thrust load management.       Two permanent magnets are cast into the rotor assembly. Electrical, Reed Switch: Maximum Voltage 10VDC        Maximum Current 10 mA        Lifetime 109 cycles. Hermetically sealed. Output signal: Reed switch contact rate varies linearly with wind speed.  Two pulses per revolution. Signal Transfer Rate: m/s=0.76868*Hz+0.94 (MPH=1.71949*Hz+2.10) Rotation Starting Threshold: 0.9 m/s (2.0 mph) Weight: 203 grams (0.45 lbs.) Dimensions: 3-cup Conical Cross Section: 63.5 mm (2.5 in.) Swept Diameter of Rotor: 200 mm (7.9 in.) Overall Height: 195 mm (7.7 in.) Installation Mount: 13 mm (0.50 in.) socket with cotter pin and locking screw Environmental: Operating Temperature: -40 to 60°C (-40 to 140°F)    Operating humidity range 0 to 100% RH.    Gust Survival Speed: over 80 m/s (179 mph). Lifespan: 3 to 5 years of normal operating conditions. Order Part Number: 003250, add -05, -10, -20, -50 to include an attached 5, 10, 20 or 50 m 22 ga. twisted pair shielded cable. ET-3250 Anemometer Specification Sheet PDF