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Introduction:
This anemometer is an improved version of the popular three-cup design used in wind assessments for decades. 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.
Specifications:
| 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) |
| Calibration |
Not individually calibrated.
Calibration statically based on samples.
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| Output Signal |
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| 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
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| Protection |
Metal Oxide Varistor (MOV) between terminals |
| Physical Properties |
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| Cup Diameter |
51 mm (2 inches) |
| Rotor Diameter |
190 mm (7.5 inches) |
| Weight |
108 grams (3.8 ounces) |
| Mounting and Wiring |
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| Mounts On |
12.7 mm (0.5 inches) round rod or tubing |
| Mounts Using |
Set screw and cotter pin
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| Wiring Terminals |
Two #4-40 brass screws with captive nuts |
Purchasing:
Now you can purchase these products directly through our sister website:
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Anemometer, #40R
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Click on photo to enlarge
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US Price: $140.00 USD
Please call us at +1-507-454-2727 to place an order.
Or click here to order online from  .
#40 anemometer with dry contact reed switch and rubber boot.
Part Number: APRS6504
Shipping Weight: 0.50 pounds
RoHS: compliant
Origin: USA
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Anemometer / Wind Vane Boot, Green, Molded Vinyl
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Click on photo to enlarge
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US Price: $5.00 USD
Please call us at +1-507-454-2727 to place an order.
Replacement molded vinyl boot for our anemometer and wind vanes. Not compatible with APRS6500 series anemometer.
Part Number: APRS6512
Shipping Weight: 0.13 pounds
RoHS: compliant
Origin: USA
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