VWS3775-M is a highly capable, high performance wind speed and wind sensor system. It is designed to measure wind speed, direction, temperature and relative humidity with accuracy and reliability. The unit is especially suitable for applications such as wind energy, meteorological surveillance, wind studies, agricultural research, and building monitoring.The main components of a VWS3775-M include a wind speed operating unit, anemometer, temperature and relative humidity sensor, and a wind direction operating unit. The wind speed operating unit measures wind speed, temperature, and relative humidity using a wheel rotation and a pulse count system, while the anemometer measures wind speed, temperature, and relative humidity with high accuracy. The wind direction operating unit uses dual infrared optical systems to accurately measure wind direction. The operating principle of the VWS3775-M is based on the principles of Coriolis force, Bernoulli’s principle, and other physical laws. The Coriolis force is generated by the motion of air molecules, which interacts with the rotating parts of the system. This force creates a pressure differential between the upstream and downstream portions of the system, which is then measured by the anemometer. Pressure difference is also measured directly using a pressure transducer. Bernoulli’s principle is used to calculate wind speed from the pressure differential. The temperature and humidity sensors measure the atmospheric temperature and relative humidity. They measure the relative humidity using a thin-film capacitance sensor and the temperature using a heat-exchange thermal-electric sensor which measures the difference between the temperature of the air and the temperature of the sensor material. The wind direction operating unit works based on the principle of dual infrared optical systems, combining the light from two infrared sources to obtain the relative direction of the wind.The VWS3775-M is capable of operating in conditions with temperatures ranging from -30°C to +60°C, and is certified for use in a variety of tough environment applications, including desert, mountain, sea spray, and salt fog. It is also dustproof and waterproof, and has a compact, lightweight design which is easy to install and maintain.In conclusion, the VWS3775-M is a highly capable, high performance wind speed and wind direction sensor system. It is designed to measure wind speed, direction, temperature, and relative humidity with accuracy and reliability. It is ideal for a variety of tough environment applications, including wind energy, meteorological surveillance, wind studies, agricultural research, and building monitoring.