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Murphy Electronic Vibration Switch EVS-2

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Murphy Electronic Vibration Switch - EVS-2

Product Condition: NEW
Murphy Electronic Vibration Switch EVS-2
Estimated ship date: for orders by 3pm PT/6pm ET today Available for back order.

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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 or Centurion PLUS controllers for increased functionality. It complements Murphy’s VS2 shock and excessive vibration/pulsation switch designed to detect abnormal shock or pulsation due to equipment failure and to shutdown other equipment in a system to prevent further damage.

The EVS-2 offers two adjustable level detectors with definable response delay for either Warning or Shutdown alarms. Measuring ranges and response times of the level detectors are set by DIP switch. The assigned relay powers a warning or shutdown alarm.

The 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 EVS-2 can monitor and alert the operator of abnormal vibration caused by a variety of factors, including:

  • Imbalance and misalignments
  • Defective sleeve bearings
  • Broken tie-down bolts
  • Defective ball or roller bearings
  • Gear mesh
  • Blade-pass frequencies
  • Detonation or broken parts



  • Vibration (0 to 3.0 ips peak)
  • Suitable for Universal use - with mounting at any angle
  • Aluminum Housing
  • 4 to 20 mA Analog Vibration Signal
  • RAW Signal 100 mV/g
  • Two Relays
  • Rugged Design




  • Vibration Range (Adjust jumper S1): 0.75, 1.5 or 3.0 IPS Peak
  • Frequency Range: 5 to 1000 hz
  • Analog Output (RLOAD): 4 to 20 mA ≤ 500Ω
  • RAW Signal (RLOAD): 100 mV/g (offset +5VDC) ≤ 20 kΩ


  • Operating Temperature: -22°F tp +185°F (-30°C to +85°C)
  • Storage Temperature: -40°F to +185°F (-40°C to +85°C)
  • Enclosure Classification: IP68
  • EC-Type Certification # Rating: BSI 07 ATEX 1532458U EX d IIC T6, Ex tD A32 T 100°C
  • Cable Connection: ½NPT, IP66, IRA 06 ATEX 1188 X SIRA 07 ATEX 4327 X


  • Sensor Type: Accelerometer
  • Power Required: 20 to 30 VDC
  • Current Draw: < 40mA
  • Electrical Connectors: Spring Terminals


  • Switch Contact Capacity: 30 VDC/1A, 150 VAC/0.46 A
  • Relay Function: Non-latching
  • Threshold Set Point: 10 to 100% of Alarm Set Point
  • Normally Energized (NE): Fail Safe
  • Time Delay (Adjust DIP switch S1 & S5): 1 or 5 seconds


  • Housing Material: Aluminum/Epoxy Paint (Red)
  • Weight: 1.5 Lbs (0.7 Kg)
  • Size (H x W): 4.9 in. x 3.9 in. (125 x 100 mm)
  • Mounting Threads: ½" NPT Female, ½" NPT Male/Male SS


  • Alarm (LED): Yellow
  • Shutdown (LED): Red

Additional Information

Product Condition NEW
upc No

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