Anemometer Kit 0-5V (IP65 grade) - DFRobot Wind Speed Meter (aluminium alloy, military grade cable interface)

SPECIFICATION 

• Model：JL-FS2
• Type：three cups
• Output signal range：0-5V (Voltage signal)
• Supply voltage:  DC12-24V
• Power consumption：Voltage MAX≤0.3W
• Start wind speed：0.4-0.8m/s
• Resolution：0.1m/s
• Effective measurement range：0-30m/s 
• System error：±3%
• Transmission distance：More than 1000m
• Transmission medium：Cable transmission
• Connection mode：Three wires
• Working temperature：-40℃~80℃
• Wiring map：VCC (Red), GND (Black),Voltage (Yellow), Current (Blue)
• Weight：1Kg

 DOCUMENTS 

• Wiki Doc 

SHIPPING LIST 

• Anemometer  x1
• Waterproof connector and 3m standard cable x1
• Screw Kit x1

Connection Diagram

Please make the external power (DC 9-24V) and the wiring to Arudino in same ground, i.e. connect GND to arduino as well as to external power's GND. In the diagram, it was not indicated out.

• Red ------ +9-24V
• Black ---- GND
• Yellow --- voltage signal
• Blue ----- current signal

Sample Code

/*
Connect the voltage signal wire to Arduino analog interface:
Yellow Cable<---->A0
*/

void setup()
{
Serial.begin(9600);
}

void loop()
{
int sensorValue = analogRead(A0);
float outvoltage = sensorValue * (5.0 / 1023.0);
Serial.print("outvoltage = ");
Serial.print(outvoltage);
Serial.println("V");
int Level = 6*outvoltage;//The level of wind speed is proportional to the output voltage.
Serial.print("wind speed is ");
Serial.print(Level);
Serial.println(" level now");
Serial.println();
delay(500);
}

Dimension Diagram

Relationship between Speed and Output value

Formula: V=6*U