Dynalabs Wind Speed and Direction Sensor (Anemometer)

Wind speed Sensor
3 Cup Anemometer Sensing
3 cup assembly mounted on friction-free shaft and coupled to a chopper
Starting threshold 0.25 meters/sec
Range 0 to 50 meters/sec
Distance Constant 2.5 m
Operating temp -50 Degrees C to +65 Degrees C **

Output
A: 0-1 V (Default)
B: Modbus RS485 (optional)

Operating Input
Voltage
12-24 VDC
Accuracy Better than 0.5 m/s up to 10 m/s, +/- 2% F S above 10 m/s
Diameter of cup 50 mm
Diameter of cup assembly 165 mm
Construction of sensor body Brass housing and stainless-steel shaft

Wind Direction Sensor   Wind Vane
Sensing  Vane coupled to linear endless potentiometer
Starting threshold  ± 05 meters/sec
Range  0 – 360 degrees from North

Output Types
A. 0 – 1 VDC (default)
B. MODBUS RTU (optional)

Operating Input Voltage 12-24 V DC
Resolution 1 degree
Accuracy  +/- 3 degrees
Operating Temperature  -40 to + 60 degree Celsius
Construction of sensor body  – Brass housing, stainless steel shaft, and aluminum vane
– Brass epoxy-coated body

Introduction

• Dynalab Weather Technologies anemometer is a fast response, low threshold up to electronic anemometer. When rotated by wind, a chopper on the anemometer shaft interrupts the infrared light beam 18 times per revolution, generating pulses from a phototransistor. The signal is amplified and fed through a line driver who can drive 500 meters of cable. The frequency is proportional to wind speed. The anemometer is provided with 3 pin connector for easy replacement.
• DWD  wind vane is a counterbalanced, low threshold wind vane. A Linear, wire wound endless potentiometer is coupled to the vane by an SS shaft. As the vane turns, it rotates a stainless-steel shaft which is coupled to the potentiometer. This potentiometer has excellent linearity and very low starting torque. The use of a single wiper increases the life expectancy of the potentiometer. The north of the wind vane is marked on its body. This line is to be aligned with the actual North with the help of a prismatic compass, at the time of installation. The sensor gives minimum resistance at North (i.e., 0 degrees approximately 20 ohms). The resistance output is linearly proportional to the position of the wind vane. This Resistance is converted to a voltage in the Interface unit in such a way that 0 degrees to 360 degrees cover a range of 0 to 1 volt
  

  Weight	4000 g
  Dimensions	20 × 10 × 5 cm
  Sensor Output	4-20mA, 0-1 V, Modbus RS485