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Phone:- (603) 726-7500Fax:- (603) 726-7502



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A75-101 Reed Switch Anemometer

Model A75-101 Reed Switch Anemometer


  • Anemometer for wind resource assessment instrumentation
  • Research measurements in environmental studies
  • Engineering studies on wind effects on bridges, skyscrapers
  • Control anemometer for new or existing wind warning devices
  • Very simple, RoHS compliant, elegantly engineered construction
  • Dirt and water resistant, modified Teflon bearing system
  • All corrosion resistant materials
  • All three cups molded in one piece for repeatable performance
  • Professional qualities at a minimum price

Note: Calibration reports available at additional cost.


Threshold: Starting threshold - 0.75 m/s (1.75 M.P.H.) Cup distance constant (63% recovery) - 3.0 m (10 ft.)

Materials: Cups one piece injection molded black polycarbonate (Lexan) Body housing is black ABS plastic; Shaft fully hardened beryllium copper; Modified self-lubricating teflon bearings. Rated Pv factor of 20,000 (at 15 mph, Pv is approx. 500; at 100 mph Pv is approx 2,000) Upper Bearing is centered in the plane of cup thrust for optimal loading. Permanent magnet Indox 1, 25 mm (1 in) dia., 13 mm (0.5 in) long, 4 poles


0.1 kg (0.2 lb.)

Dimensions: 3 cups conical cross-section - 51 mm (2 in) dia.

Swept diameter of rotor - 190 mm (7.5 in) Overall height - 51 mm (3.2 in) Moment of Inertia of rotor assembly = 68 x 10-6 S - ft2

Mounting: using a cotter pin on a 13 mm (0.5 in) diameter mast with a #35 hole 11 mm (.35 in) from the top


Reed Switch: Maximum voltage 10VDC Maximum Current 10 mA Lifetime: 109 cycles

Output signal: Contact transfer rate varies linearly with wind speed. 120 contact transfers per second at 102.5 MPH

Environmental: Operating temperature -40 to 60oC (-40 to 150oF) Operating humidity range 0 to 100% RH Gust Survival Speed : 214 MPH

WWW.COMPTUS.COM Phone: 603 726-7500 Fax: 603 726-7502

Model A75-101

WWW.COMPTUS.COM Phone: 603 726-7500 Fax: 603 726-7502


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