IMI Industrial Vibration Sensors Katalog Seite 127

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Vibration Switches n Provides continuous machinery protection n Electronic mechanical switches available n Single or dual relay versions n Responds to acceleration velocity or displacement n Adjustable time delays to prevent false trips n Works with PLC DCS and SCADA systems for data trending A vibration switch is a simple protection device that senses vibration and triggers an alarm or shuts down a machine if the vibration exceeds a preset threshold level The vibration switch can sense vibration due to faults such as imbalance misalignment looseness worn bearings cracked gears or lack of lubrication IMI Sensors offers a complete selection of electronic and mechanical vibration switches to suit many applications and installations Mechanical switches provide basic protection at a low cost for less critical machinery These switches are easy to install do not require power to operate and are the most basic type of vibration switch protection available For more critical machinery electronic vibration switches use a Built in precision accelerometer to accurately monitor vibration levels An electronic switch consists of an accelerometer circuit board and one or more electromechanical or solid state relays for alarm and shutdown protection The internal circuitry monitors the sensor s vibration level and compares it to a preset threshold or alarm value When the vibration level exceeds this threshold the relay is then activated A typical electronic vibration switch has several advantages over a mechanical unit It has no moving parts is more reliable and has a much higher degree of accuracy and repeatability Time delays can be used to avoid false trips during switch power up equipment startup operational changes and the chance occurrences of short term vibration increases Smart Vibration Switch with MAVTTM Option Series 686B 124 visit us online at www imi sensors com 1 716 684 0003