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VIBRATION, TIME & SPEED
EVS Electronic Vibration Switch
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
Literature:
For more information about this product, you can view the related literature here:
- Sales Bulletin (05062)
- Installation Instructions (00-02-0597)
Inside this section:
Vibration / shock switches:-
- EVS - Electronic Vibration Switch
- 20.SS series – ATEX approved, Eex-d-IIC-T6 shock/vibration switch.
- VS2(EX) series – Shock and vibration switch.
- VS94 – Shock and vibration control switch.
Timers:-
- 5T, 15T, 12T, 24T Timers – Mechanical time switches.
Tachometers, hourmeters and speed switches:-
- TM series hourmeters – Electromechanical hourmeters.
- ATS, ATA, ATHA, ATHS – Tachometers and tachometer/hourmeters.
- MT90 – Digital tachometer
- MTH6 – Digital tachometer, hourmeter & adjustable overspeed trip.
- SHD30/SHD30-45 – Digital tachometer and hourmeter with adjustable overspeed trip point.
- HD9063, OS77D, SS300 – Selectronic® speed switches.
- 3ST – 3 point speed trip relays.
- MP series – Magnetic pickup speed transducers.