Reed sensor in Surveyor’s Wheels for Measuring Distance
A Surveyor’s Wheel or a Trundle Wheel, is a device for measuring distance. Each revolution of the wheel measures a specific distance and a manual Surveyor’s Wheel is usually marked in fractional increments of a revolution that helps the user translate partial revolutions to actual length measurements for a final total.
This tool is usually not too accurate as wheel slippage on sandy areas could lead to inaccurate measurements, but is very helpful when surveying boundaries that are not straight, where a standard tape measure would be useless.
In the business of land surveying, a lot of conversion between units of land such as grounds to acres to hectares to cents may need to be done and it is important that the measurement tools support this. With a reed switch mounted inside the controller, and a ring magnet mounted on the shaft of the Surveyor’s Wheel, the pulses generated are decoded by the controller. A unit change button displays the actual length in the desired unit such as meters, feet or other.
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-324 Miniature Flat Pack Reed Sensor with Actuator
|Screw mountable, 4.0 mm slot widths, matching actuator magnet, capable of switching 10 W...Continue reading|
MS-216 Standard size Cylindrical Sensor
|Diameter 6mm x 25 mm long, omni polar, switches loads of up to 10W,...Continue reading|
MS-216-L Cylindrical Sensor for Line Voltages
|Diameter 6 mm x 40 mm long, omni polar, switches loads of up to...Continue reading|