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#40R Anemometer

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Price:
$140.00 (excluding tax)
SKU:
APRS6504
Weight:
1.00 LBS
Rating:
( )
Shipping:
Calculated at checkout
Quantity:
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Product Description

40R Anemometer

Off Grid Options presents an improved version of the popular three-cup design used in wind assessments for decades - our #40R Anemometer. It is manufactured to precise industry standards. The rotor is made of tough polycarbonate for exceptional durability and reliability. The sensor base is also made of rugged polycarbonate, making it more resistant to damage during installation than our competition. A green molded vinyl boot protects the anemometer wiring. Made in the USA with exceptional quality control -- all units are tested mechanically and electronically before shipping.


Internally, the #40R anemometer has a fully hardened beryllium-copper shaft running in self-lubricating modified Teflon bearings. The rated bearing PV (pressure-velocity) factor is 20,000. At 15 MPH the PV is approximately 500. At 100 MPH the PV is approximately 2,000. Over designed is an understatement.

 

Be sure to order our Anemometer Cable (part number APRSC1000) to connect your new anemometer to our Wind Data Logger.


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Performance  
Accuracy Within 0.1 m/s (0.2 MPH) for the range 5 m/s to 25 m/s (11 MPH to 55 MPH)
Rotor Moment of Inertia
 92.2 x 10-6 kg-m2 (68 x 10-6S-ft2)
Distance Constant 3.0 m (10 feet)
Callibration    Not individually calibrated. Calibration statically based on samples.
Output Signal
Sensor Type Reed switch, dry contact. Frequency proportional to cup rotational speed.
Transfer Function m/s = (Hz * 0.383) + 0.324; MPH = (Hz * 0.857) + 0.725
Protection Metal Oxide Varistor (MOV) between terminals
Physical Properties  
Cup Diameter 51 mm (2 inches)
Rotor Diameter 190 mm (7.5 inches)
Weight 108 grams (3.8 ounces)
Mounting and Wiring  
Mounts On 12.7 mm (0.5 inches) round rod or tubing
Mounts Using Set screw and cotter pin
Wiring Terminals Two #4-40 brass screws with captive nuts

 

 

 

 

 

 

 


It starts with ultra tough UV stabilized Delrin™ 507 (acetal co-polymer) plastic, 304 stainless steel, and corrosion resistant anodized 5052-H32 aluminum. The internal potentiometer has 360° rotation, 355° electrical angle (5° dead-band), a machined aluminum body, and an integrated ball bearing. Besides the potentiometer bearing, there is also a precision stainless steel ball bearing. Metal Oxide Varistor (MOVs) help protect the wind vane against lightning and static buildup. All of the machining, anodizing, assembly, and testing of the wind vane is done in the USA. The wind vane comes with a rubber

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