Onderwerp: Windmeter B&G WS310 (bedraad) defect ?

Method A: The Potentiometer (Variable Resistance)
This is the most straightforward, old-school electronic method.
How it works: The rotating shaft is connected to a wiper inside a circular resistor (a potentiometer). As the wind vane turns, the wiper moves along the resistor.
The Signal: A constant voltage is sent into the potentiometer. As the wiper moves, the electrical resistance changes based on the angle. The output voltage changes accordingly (e.g., 1\text{V} might mean North, 2\text{V} means East, 3\text{V} means South).

Method B: Optical Encoders (Digital Precision)
Many high-end or commercial weather stations use optical sensors because they don't wear out over time like potentiometers do.
How it works: A small, slotted disc is attached to the shaft. On one side of the disc is an infrared light-emitting diode (LED), and on the other side is a light sensor.
The Signal: As the disc turns with the wind, it blocks and unblocks the light. The sensor counts these interruptions or reads a specific digital pattern printed on the disc (Gray code) to determine the exact angle down to a fraction of a degree.

Method C: Magnetic / Hall Effect Sensors
This method is incredibly durable because the moving parts never actually touch the electrical components.
How it works: A small magnet is fixed to the bottom of the rotating shaft. Beneath it sits a stationary chip called a Hall effect sensor.
The Signal: As the magnet rotates overhead, it alters the magnetic field passing through the chip. The chip detects the precise angle of the magnetic field and converts it into a digital signal (like a serial or Modbus data stream) to send to a computer.