A unique folded-path, low power sonic anemometer operates on the principle that the speed of the wind affects the time it takes for sound to travel from one point to a second point. If the sound is traveling in the direction of the wind, then the transit time is decreased. If the sound is traveling in a direction opposite the wind, then the transit time is increased.
The wind sensor has no moving parts, which makes it maintenance free. The measurement range for wind speed is from 0 to 112 mph (0 to 50 m/s) and for wind direction from 0 to 360°.
Barometric Pressure, Temperature, and Humidity Module:
Barometric pressure, temperature, and humidity sensors are housed in a powder-coated metal radiation shield.
Barometric pressure is measured with a stable transducer using nano-technology, yielding a linear and repeatable sensor with low hysteresis. The piezoresistive pressure sensor module is mounted on a small electronic circuit board.
A microcontroller controls the operation of the sensor and the data interface. The microcontroller polls the pressure sensor module once per second for the barometric and ambient temperature. The raw readings are temperature corrected by the microcontroller.
Temperature measurement uses a precision triple-element thermistor. This provides highly accurate and stable readings.
Humidity is measured with a capacitive polymer sensor. This construction provides excellent resistance to wetting, dust, dirt, oils, and common environmental chemicals.
The internal compass module is low power and compact. It employs a pair of magneto-inductive sensors which change inductance with varying magnetic field strengths, to sense the Earth's magnetic field.
The microprocessor measures the output of the internal compass and then corrects wind direction data for the orientation of the sensor. The output of the wind direction is relative to Magnetic North. A user-programmable value of Magnetic Declination may be entered through terminal mode to enable output relative to True North rather than Magnetic North.
Generally leaves the warehouse in 1-2 weeks.
|Weather Protected Multi-Sensor Design|
|All-in-One Measurement of Temperature, Relative Humidity, Wind Speed, Wind Direction, Barometric Pressure|
|Integrated Sonic Wind Sensor|
|Automatic Self-Alignment Using Internal Flux-Gate Compass|
|Rugged, Reliable, Quick Deploy/Install|
|Low power consumption - ideal for battery or solar-powered installations|
|All Metal Construction|
|No Mechanical Components|
|System Specifications Summary:|
|Range: 0-112mph (0-50 m/s)|
|Accuracy: +/-0.5 m/s or 5% of reading|
|Resolution: 1 mph (1 m/s)|
|Units Available: knots, mph, km/hr, m/s|
|Range: -58 to +122°F (-50 to +50°C)|
|Units Available: °F, °C|
|Range: 0 - 100%|
|Units Available: %RH|
|Accuracy: ±5° at wind speed >2.2 m/s|
|Units Available: ° Azimuth|
|Range: 17.50 to 32.50 InHg (600 to 1100 hPa)|
|Accuracy: ±0.35 hPa (at 25°C)|
|Resolution: 0.1 hPa|
|Units Available: Kpa, mbar, InHg|