Conveyor belt rip detection

Logo1

Elastomers Compounding Processing

Standards / norms Equations Underground US dimensions Steel cords Engineering tables Papers

Handling/Storage Reel dimensions Stringing Textile belt splices Textile belt splicing Steel cord belt splices Steel cord belt splicing Splice testing

First belt Strongest belt Strongest underground belt Highest capacity belt Longest belt Heaviest belt First self-extinguishing belt Fastest belt

Belt designation Carcass types Cover grades Elastomers Glossary of terms

Rip detection Carcass health monitoring Splice health monitoring Surface monitoring Conveyor safety devices

Closed conveyor belts Energy saving belts Aramid belts

MONITORING

RIP DETECTION WITH SENSOR LOOPS
	The most popular passive belt protection system are induction loops/coils in combination with external transmitters and receivers. The loops are vulcanized into the belt's top or bottom cover. If a foreign body penetrates the belt and gets stuck in the conveyor structure, it may rip the belt. If a sensor loop is cut by this foreign body, no signal is transferred by the loop anymore - the receiver sensor does not get a signal and shuts off the conveyor drive.
	There are different sensor loop styles on the market: The most reliable design is of a rectangular shape. Other loops have got one or more points where the cords or wires cross. At these points the wires rub and may break. In general, sensor loops are sensitive parts, which may trigger off false alarm. Usually they do not achieve the operational life of the conveyor belt.

Another difference is the material of the sensor coils:

Cords made of steel are more flexible and stronger.	Sometimes copper cores are used. They usually fail because of breakage.

Home | First Aid | Disclaimer | Contact | ©2005 www.ConveyorBeltGuide.com