Meteorology Sensors

Model NL200 WeatherPort Wind Sensors

The WeatherPort Wind Sensors are moderately priced instruments designed for general wind monitoring applications. Injection molded thermoplastic, anodized aluminum, and stainless steel parts contribute to reliable operation in adverse environments. The combination three cup anemometer and wind vane units utilize an in-line configuration, eliminating the need for a crossarm. Also available is wind speed only and wind direction only sensors. Standard cable length is 40 feet, additional cable lengths can be supplied.

The anemometer produces a series of output pulses having a frequency directly proportional to wind speed. Wind direction is measured by a balanced vane coupled to a 20k ohm conductive plastic potentiometer. With a constant excitation voltage of less than 15 volts, the output from the wiper arm is proportional to the wind azimuth angle. The WeatherPort Wind Sensor can easily be connected to most data loggers, including the Neon and Starlog Data Loggers.

Also available is a 4 to 20 mA current loop version. The electronics convert the raw signals from the wind sensors to proportional 4 to 20 mA current loop values for use by process control or monitoring systems. It acts like a variable resistance that draws 4-20 mA when powered with 8 to 30 Vdc. No external power is required because the encoding electronics for wind speed and for wind direction are isolated and powered from their respective 2-wire current loops. 4 to 20 mA wind speed only and wind direction only sensors are also available.

Specifications