EVS Electronic Vibration Switch - Murphy

EVS Electronic Vibration Switch Brand : Murphy The Murphy Electronic Vibration Switch ( EVS) protects against rotating equipment failure by monitoring velocity-based vibration levels. Connection of the EVS to Murphy controllers or alarm annunciators provides warning and/ or equipment shutdown when abnormal vibration is detected. Applications include stationary engines and motors, pumps, gensets and cooling fans. The EVS complements Murphy’ s VS2™ and 20.SS devices, which are designed to detect an abnormal shock or pulsation due to equipment failure. Features: * Piezoelectric-crystal internal sensor with built-in microelectronics for reduced noise sensitivity * Electronically integrated output signal that measures and trips on velocity * Adjustable calibrated set-point controls * Shutdown set-point measured in velocity * Optional 4-20 mA output for continuous monitoring capability * Solid-state outputs for setpoint trip * Adjustable time delay to prevent false tripping on high-vibration start-ups or non-repetitive transient events * Self-test and calibration