.svg){kind=small}
The 40H is based on the NRG 40C Anemometer, one of the first anemometers designed exclusively for the wind industry. This Hall Effect version is engineered for electrically noisy environments and instrumentation that requires a square wave signal. The 40H is most commonly used as a control sensor, either on small wind turbines or to trigger PV tracker stowing in dangerously high winds.
The 40H’s Hall Effect switch produces a high level square wave voltage signal with a frequency proportional to wind speed. This signal is easy to interface to a wide range of industrial devices including turbine controllers, programmable logic controllers (PLCs), and data loggers. A 5-26V DC excitation voltage with 5 mA of current is required.
Constructed of rugged Lexan cups, the 40H is molded in one piece for repeatable performance. A PVC terminal boot is included with each anemometer for additional protection from the elements.
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 |
|
|
Related Products
SRM System
Whether tracking or fixed, mono- or bifacial, 3 MW or 300 MW, NRG is focused on delivering repeatable solar resource measurements across your fleet of projects.
SRA System
NRG Systems’ SRA System is a complete and integrated measurement solution for the prospecting and formal resource assessment of utility-scale photovoltaic projects.
LOGR-S data logger
LOGR-S is NRG Systems’ first data logger designed specifically for the solar energy industry.
NRG PVT1 PV temperature sensor
Because temperature has a significant impact on the performance of operational PV solar systems, PV module temperature is one of the most critical measurements to monitor and analyze.
Li-Cor LI-200R pyranometer
The LI-200R measures Global Horizontal Irradiance (GHI) – the combination of Direct Normal Irradiance (DNI) and Diffuse horizontal irradiance (DHI).
Hukseflux SR20 pyranometer
Recommended when measurement accuracy is the top priority, the Hukseflux SR20 is a thermopile pyranometer that is compliant with the highest category in the ISO 9060 standard: class A (Secondary Standard).
EKO MS-40 pyranometer
The MS-40 Pyranometer is an ISO 9060-2018 Class C pyranometer that measures solar irradiance across the full Solar spectrum at a reasonable cost.
EKO MS-60 pyranometer
The MS-60 Pyranometer is an ISO 9060-2018 Class B pyranometer with a millivolt analog output. The sensor features a double dome construction for lower offsets and cosine errors.
EKO MS-80 pyranometer
The MS-80 Pyranometer is a unique pyranometer compliant to the “Fast response” and “Spectrally flat” sub-categories under ISO 9060:2018 Class A.
Delta-T SPN1 sunshine pyranometer
The Delta-T SPN1 Sunshine Pyranometer measures global (total) and diffuse horizontal irradiance as well as sunshine duration.
Hukseflux SR30-D1 pyranometer
The SR30 from Hukseflux provides class A (secondary standard) performance per ISO 9060:2018 along with a rich set of features that are unmatched by other sensors.
EKO ms-80S pyranometer
The MS-80S Pyranometer is a unique pyranometer compliant to the “Fast response” and “Spectrally flat” sub-categories under ISO 9060:2018 Class A.
