Vibration Switches

Vibration sensitive switches are used to protect rotating plant and reciprocating machinery. They are adjustable to operate above the normal running levels of vibration, activating alarm or machine shut-down circuits.

 

The vibration switches have a low frequency response, which makes them ideal for detection of mass unbalance on most machines. They are inherently insensitive to high frequency components and those caused by external knocks, etc.

 

Weatherproof Vibration Switches

3171MR & S

The type 3171 vibration switch is a low-cost, vibration-sensitive switch for the protection of rotating and reciprocating machinery. It is adjustable to operate above the machine’s normal running levels of vibration, activating machine shut-down circuits and/or alarms.

 

Once operated the internal microswitch remains latched until reset. The switch is reset by depressing a reset button on the base of the 3171MR or by energising momentarily an electrical coil in the 3171S model.

 

Features

  • Ease of installation on new or existing plant and machinery
  • Robust for industrial environments
  • Manual or remote electrical reset
  • SPCO or DPCO (manual reset) or DPST (with remote reset)
  • Must be vertically mounted as in diagram below – sensitive in horizontal, lateral and vertical planes
  • Electrical connections via M20x1.5mm cable entry (Models can be adapted for two cable entries)
  • Maintenance free operation
  • Models for operation in hazardous areas, see appropriate data sheet
  • Captive lid and fasteners
  • Two year warranty (from date of Invoice)
  • Accessories available
  • Blanking plug accessory for corrosion protection when mounted into the field un-wired
  • Version for hazardous areas available

 

Applications

The 3171 is ideal for use on rotating and reciprocating machinery (below 3000rpm) such as fans, centrifuges, compressors, pumps, turbines, motors and generators, vibrating conveyors, vertical and horizontal crushers and shakers.

 

Explosion proof Vibration Switches

3171 Ex d e (ATEX)

The type 3171 Ex vibration switch is a low-cost, vibration-sensitive switch for the protection of rotating and reciprocating machinery in hazardous areas.

 

It is adjustable to operate above the machine’s normal running levels of vibration, activating machine shut-down circuits and/or alarms.

 

Once operated the internal micro switch remains latched until reset.

 

Key Benefits

  • Ease of installation on new or existing plant and machinery
  • Robust for Industrial Environments
  • Manual reset
  • SPCO or DPCO Contacts
  • Must be vertically mounted as in diagram below – sensitive in horizontal, lateral and vertical planes
  • Electrical connections via M20x1.5mm cable entry (models can be adapted for two cable entries)
  • Captive lid and fasteners
  • Two year warranty
  • Accessories available
  • Models for operation in non-hazardous areas are available.

 

Applications

The type 3171 Ex vibration switch, with its low frequency response is ideal for detection of mass imbalance on most machines. It is inherently insensitive to high frequency components and those caused by external knocks, etc. The type 3171 Ex vibration switch is responsive to vibrations in all directions.

 

Further information on the ATEX approval can be found at www.siracertification.com.

Find a distributor in your region for Vibration Switches

Commodity Code – 85362010

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