Reed sensors in Wind Vanes
A weather vane is an instrument used to show the direction of the wind. A regular weather vane usually consists of a pointer that moves according to the wind and point to the direction the wind is blowing. In the olden days, the wind vanes had to be monitored to note for any change in direction, but this obviously is not possible in today’s world.
Based on the same construction as a regular wind vane, eight reed switches are mounted radially at 22.5 degree angles making compass points on a circular PCB or wired individually. The wind vane contains one long magnet in line with its pointer, which is the exact center of the radially mounted reed switches. As the wind direction changes the vane actuates the corresponding reed switches. These signals are fed to the microprocessor which determines wind direction and also saves the readings as a history.
Applications are classified as Position Sensing, Pulse Counting, Electromagnetic or Relay, Temperature Sensing or Magnet Biasing types. This application is classified as follows and the link gives more information on best practices to help select the most suitable AT band and matching magnet.
The Reed Switches and Sensors used in such applications need to be robust, durable and efficient in meeting a high life expectancy. Our engineers work hard in life testing our products under various conditions, and our intention is to ensure end product durability and life. Although we wouldn’t want to restrict any of our products for use in only certain applications, the recommended products for use in this application are listed below.
MS-108 Standard Size PCB Mountable Reed Sensor
Drawing of MS-108 Reed SensorDrawing of MS-108 Reed Sensor Pad Layout starFeatures10W Contact Rating. 20.3 mm PCB Pitch. Normally
Oct 30, 2020
SM-1322 Sub Miniature Reed Switch
This Form A type SM-1322 Sub Miniature Reed Switch is built with a 2.25 mm diameter glass with a higher wall thickness for better glass to
Nov 8, 2022
LV-1925 Reed Switch for Line Voltage switching
The LV-1925 is a Line Voltage Reed Switch is designed for endurance at switching line voltage loads of 230V. Two versions are capable of
Dec 2, 2020