Programmable Logic Controllers
Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Chapter 6, Problem 12RQ

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Actuating reed switch sensors:

  • Magnetic reed switch consists of a closed glass tube that is filled with protective gas in which two flat contacts tabs are air tight sealed.
  • These contacts are built of magnetic materials like magnetic north pole and magnetic South Pole.
  • When the tube is subjected to magnetic force parallel to the reed switch, the reeds becomes flux carriers...

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