The 40H Anemometer is an unheated three-cup anemometer that provides high precision wind speed measurements.
NRG 40H ANEMOMETER (#5930) | MEASNET CALIBRATED (#2551) | |
---|---|---|
Description | ||
Sensor type | 3 Cup Anemometer | 3 Cup Anemometer |
Applications |
|
|
Sensor range | 1 m/s to 96 m/s (2.2 mph to 215 mph) (highest recorded) | 1 m/s to 96 m/s (2.2 mph to 215 mph) (highest recorded) |
Instrument compatibility | Controllers or loggers requiring a square wave signal | Controllers or loggers requiring a square wave signal |
Output signal | ||
Signal type |
|
|
Anemometer Transfer Function |
m/s = (Hz x 0.765) + 0.35 [ miles per hour = ( Hz x 1.711 ) + 0.78 ] |
m/s = (Hz x 0.765) + 0.35 [ miles per hour = ( Hz x 1.711 ) + 0.78 ] |
Recommended load resistance |
|
|
Calibration | Purchase #2551 for MEASNET calibration. | Purchase #2551 for MEASNET calibration. |
Output signal range | 0 Hz to 125 Hz | 0 Hz to 125 Hz |
Response characteristics | ||
Threshold | 0.78 m/s (1.75 miles per hour) | 0.78 m/s (1.75 miles per hour) |
Distance constant (63% recovery) | 3.0 m (10 feet) | 3.0 m (10 feet) |
Moment of inertia | 68 x 10-6S-ft2 | 68 x 10-6S-ft2 |
Swept diameter of rotor | 190 mm (7.5 inches) | 190 mm (7.5 inches) |
Power requirements | ||
Supply voltage | 5 V to 26 V DC | 5 V to 26 V DC |
Supply current | 9 mA maximum | 9 mA maximum |
Installation | ||
Mounting | Onto a 13 mm (0.5 inch) diameter mast with cotter pin and set screw | Onto a 13 mm (0.5 inch) diameter mast with cotter pin and set screw |
Tools required | 0.25 inch nut driver, petroleum jelly, electrical tape | 0.25 inch nut driver, petroleum jelly, electrical tape |
Accessories | Protective PVC sensor terminal boot included | Protective PVC sensor terminal boot included |
Environmental | ||
Operating temperature range | -55 °C to 60 °C (-67 °F to 150 °F) | -55 °C to 60 °C (-67 °F to 150 °F) |
Operating humidity range | 0 to 100% RH | 0 to 100% RH |
Physical | ||
Connections | 4-40 brass hex nut / stud terminals | 4-40 brass hex nut / stud terminals |
Weight | 0.14 kg (0.3 pounds) | 0.14 kg (0.3 pounds) |
Dimensions |
|
|
Materials | ||
Cups | One piece injection-molded black polycarbonate | One piece injection-molded black polycarbonate |
Body | Black ABS plastic | Black ABS plastic |
Shaft | Beryllium copper, fully hardened | Beryllium copper, fully hardened |
Bearing | Modified Teflon, self-lubricating | Modified Teflon, self-lubricating |
Boot | Protective PVC sensor terminal boot included | Protective PVC sensor terminal boot included |
Terminals |
|
|
NRG Systems • 110 Riggs Road • Hinesburg, Vermont 05461 • +1 802-482-2255 • info@nrgsystems.com