Wind Speed Monitoring Sensor Outdoor High Accuracy Ultrasonic Anemometer 4‑20mA 9‑30V Item Type: Wind Speed Monitoring Sensor Material: ABS Size: Approx. 158 x 180 x 70mm / 6.22 x 7.09 x 2.76in Power Supply Voltage: DC9-30V Signal Output: 4-20mA Measurement Range: Wind speed 0~45m/s Extension Line Length: Approx. 0.8m / 2.6ft Accuracy: ±(0.5+0.02V)m/s(V represent real time wind speed value) Resolution: 0.1m/s Startup Wind Speed: ≤0.8m/s Maximum Power Consumption: 0.48W Load Capacity: DC12V power supply, current output impedance ≤350Ω DC24V power supply, current output impedance ≤900Ω, voltage output impedance ≥1KΩ Working Environment: Temperature: -35℃~60℃, Humidity: ≤100%RH non condensing Protection Level: IP64 Widely Used In: Greenhouses, environmental protection, ships, docks, aquaculture, advertising gate barriers, weather, marine, environmental, airports, ports, laboratories, industrial, agricultural and traffic environments for wind speed measurement Formula: 4-20mA: F=(I-4)/16xA+B F: Wind speed, m/s; I: Sensor output current value, mA; A: Sensor range width(range upper limit minus lower limit); B: Minimum value of sensor range(lower limit of range); Wire Connection Method: Red Output Signal(voltage): Power supply positive Black Output Signal(voltage): Power supply negative Yellow Output signal(voltage): Signal Distribution Diameter: Approx. 63mm / 2.48in Mounting Hole Diameter: Approx. 3.2mm / 0.13in Aerial Plug Diameter: Approx. 15mm / 0.59in(recommended to reserve 25mm for wiring, wire connection first, then install and fix the sensor) Troubleshooting: 1. The wind blade does not rotate smoothly and has a large delay. There may be foreign objects or jamming in the bearings due to long term use. Please return the sensor to the company for processing; 2. The instrument display value is incorrect. May be due to wiring problems or communication port failures that prevent obtaining correct data. Please check whether the wiring is correct and secure, whether the port is occupied, and whether the port settings are correct; Weight: Approx. 272.00g / 9.59oz