Item Type: Wind Sensor Weight: 1598g / 56.4oz Material: ABS, Galvanized, Aluminum Widely Used in: Meteorology, Marine, Environment, Airport, Harbor, Laboratory, Industry, Agriculture and Transportation, etc. Signal Output: RS485 Cable Length: Approx. 5M / 16.4ft Measuring Range Wind Speed: 0-70m/s Power Supply: DC 9-30V Output Signal Serial port: RS485 (default protocol) Accuracy: Wind speed: (0.3 + 0.03V) m / s (V represents the real-time wind speed value) Wind Direction: 3 Degree Resolution: Wind speed: 0.1m/s, Wind direction: 1 Degree Start Up Wind Speed: 0.5m/s Maximum Power Consumption: 0.9W Load Capacity: DC12V power supply, current type output impedance 350 DC24V power supply, current type output impedance 900 Working Environment: Temperature -35-60 Humidity 100% RH without condensation Protection Grade: IP64 Calculation formula Wind Speed Pulse type: F=0.5 + 0.101xM Wind speed and direction current type 4-20mA: F=(I-4)/16xA+B 0-20mA: F=I/20xA+B 0-2.5V: F=V/2.5xA+B 0-5V: F=V/5xA+B 1-5V: F=(V-1)/4xA+B F: Indicates the wind speed or direction sensor value, m/s or degree; M: Number of pulses in 1 second; I: Sensor output current value, mA; A: Sensor range width (upper range limit minus lower limit); B: sensor range minimum (lower range limit); For example: wind speed sensor range of 0-70m/s, then: A = 70, B = 0 Wind direction range of 0-359 degree, then A = 359, B = 0 Wiring method 1. If the sensor is equipped with our instrument, use the sensor cable to connect the sensor with the corresponding interface on the instrument directly. 2. If the sensor is purchased separately, the wiring sequence is as follows: Red: Power Positive Black: A+ Yellow: B- Green: Power negative About the sensor communication protocol First, if you are using a single sensor connected to the computer to read data directly, it is recommended to use the company's private protocol, you can visualize the data in ASCII code (hex send, non hex receive); Second, if you are a multi sensor interconnection with PLC, configuration or programmable collector, it is recommended to use the standard RTU protocol, hex send and receive). Third, if there is no special requirement, the default device address in the sensor parameters is 1, baud rate = 9600, protocol RTU. Standard RTU communication protocol Serial port format Data bit 8 bits, stop bit 1 bit, parity bit None, default baud rate 9600bps, serial debugging software set to hex send and receive, two communication intervals of at least 500ms or more, CRC in the manual for the parity bit, 2 bytes. The device address is 1 by default. ASCII private communication protocol Serial port format Data bit 8 bits, stop bit 1 bit, parity bit None Baud rate 9600bps, at least 1000ms between communications CRC check procedure 1. Preset the 16 bit register as hexadecimal FFFF, call this register as CRC register; 2. Isolate the first 8-bit data with the lower bit of the CRC register and put the result in the CRC register; 3. check the lowest bit by shifting the contents of the register one bit to the right (towards the lower bit) and filling the highest bit with a 0; 4. if the lowest bit is 0: repeat step 3 (shift again) if the lowest bit is 1: the CRC register is iso-orthogonal to the polynomial A001 (1010 0000 0000 0001); 5. Repeat steps 3 and 4 until it is shifted right 8 times so that the entire 8-bit data is all processed; 6. repeating steps 2 through 5 for the next 8-bit data; 7. The last CRC register obtained is the CRC code (the CRC code obtained is low before high). Troubleshooting 1. The wind blade does not rotate properly and has a big hysteresis. There is foreign matter or stuck in the bearing due to long term use. Please send the sensor back to the company for processing; 2. The meter display value is not correct when RS485 output. Possible wiring problems or communication serial port failure to obtain the correct data. Please check whether the wiring is correct and firm, whether the serial port is occupied, and whether the serial port setting is correct; If it is not the above reasons, please contact the manufacturer. Package List 1 x Wind Speed Sensor with Cable 1 x Instruction Manual 1 x Hex Wrench 1. Please check whether the package is intact, and check whether the product model is consistent with the selection; 2. Do not wire with electricity, check the wiring is complete before powering up; 3. Sensor wire length will affect the product output signal, do not change the product when using, if there is a need to change, please contact the manufacturer; 4. Sensors are accurate devices, users should not disassemble, use sharp objects or corrosive liquids to contact the sensor surface, so as not to damage the product. 13