Murphy EVS-2 Especificaciones descargar pdf (Pagina 5)

Section 20 00-02-0841

2013-01-14 - 1 -

Product Information

Murphy EVS-2 Overview

The Murphy Electronic Vibration Switch (EVS-2) protects against equipment failure by

monitoring velocity-based vibration levels and providing an early warning or shutdown when

abnormal vibration is detected. The EVS-2 can be connected to Murphy’s TTD annunciator,

Centurion , Centurion PLUS or any third- party controller that accepts a switch input or 4-

20mA signal for increased functionality.

NOTE: The Murphy EVS-2 complements Murphy’s VS2 shock and

excessive vibration switch, which is designed to detect an abnormal shock

due to equipment failure and to shutdown other equipment in a system to

prevent further damage.

Features

 Universal use, can be mounted horizontal, vertical or at any other angle

 Piezoelectric-crystal internal sensor with built-in microelectronics for reduced noise

sensitivity

 Electronically integrated output signal that measures and trips on velocity (IPS peak)

 Two independently adjustable output channels

 Shutdown setpoint measured in velocity (IPS peak)

 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

 RAW 100mV/g output also available

Applications

The Murphy EVS-2 can be used on any

equipment where abnormal vibration could

lead to equipment damage, including:

Cooling fans

Engines

Pumps

Compressors

Gear boxes

Motors

Generator sets

The Murphy EVS-2 can monitor and alert the

operator of abnormal vibration caused by a

variety of possible factors, including:

Imbalance

Misalignments

Worn sleeve bearings

Broken tie down bolts

Worn ball or roller bearings

Gear mesh

Blade pass frequencies

Detonation

Broken parts

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