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Table of Contents
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Summary of Contents for Sentec WS303U
- Page 1 WS303 U Ultrasonic Wind Speed & Direction Sensor Product Manual...
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Page 2: Working Principle
INTRODUCTION WS303U small ultrasonic wind speed and direction sensor is a wind speed and direction measuring instrument based on the ultrasonic principle. It uses the acoustic pulse sent to measure the phase difference of the receiving end to calculate the wind speed and direction. The sensor can measure the instantaneous value of wind speed and direction at the same time. -
Page 3: Technical Specification
TECHNICAL SPECIFICATION Supply voltage 10-30V DC (0-10V output is powered by 24 V) 485：0.12W Power consumption 4~20mA/0~5V/0~10V：1.2W Wind speed 0 ~ 40m / S (customizable),0.5m starting wind speed Range Wind direction 0~360° Wind speed ±0.5+2%FS Accuracy Wind direction ±3° Wind speed 0.01 m/s Resolution Wind direction... -
Page 4: Analog Output
ANALOG OUTPUT 1. Interface description Wide voltage power supply input 10-30V DC power supply. For 0 ~ 10V output equipment, the power supply is 24 v Line color Explain brown Power supply positive Power black Power supply negative yellow Wind speed signal positive white Negative wind speed signal Output... - Page 5 3. Computing method 3.1 conversion calculation of current mode output signal The measuring range is 0 ~ 40m / s, 4 ~ 20mA output. When the output signal is 12mA, the current wind speed is calculated. The span of wind speed range is 40m / s, which is expressed by 16mA current signal. 40m / S / 16mA = 2.5m/s/ma, that is, the current changes 1mA, and the wind speed changes 2.5m/s.
- Page 6 (2) After connecting a device separately, power on and click "test baud rate" of the software. The software will test the baud rate and address of the current device. The default baud rate is 4800bit / s and the default address is 0x01. (3) Modify the address and baud rate according to the need, and query the current function status of the device.
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Page 7: Register Address
Address code Function code Register start address Register length CRC_L CRC_H 1byte 1byte 2byte 2byte 1byte 1byte Slave response frame structure: Address Function Data Data Data Valid bytes CRC_L CRC_H code code area area N area 1byte 1byte 1byte 2byte 2byte 2byte 1byte... -
Page 8: Common Problems And Solutions
Address code Function code Starting address Data length CRC_L CRC_H 0x01 0x03 0x00 0x03 0x00 0x01 0x74 0x0A * Response frame: Address code Function code Number of valid bytes wind power CRC_L CRC_H 0x01 0x03 0x02 0x00 0x01 0x79 0x84 Real time wind rating calculation: Wind power rating: 0001 (hexadecimal) = 1 = >...
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