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Vibration Sensors

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Industrial vibration sensors measure mechanical movement directly on rotating equipment housings and bearing surfaces, detecting imbalance, misalignment, and bearing wear to support predictive maintenance programs before faults develop into failures. PLC Direct supplies vibration sensors, including IFM electronic vibration monitoring sensors with integrated signal processing. Hardware is available as surplus sealed, refurbished, and used to support maintenance teams replacing failed vibration sensors in existing condition monitoring installations. 

Where Are Vibration Sensors Used in Industrial Environments? 

Industrial vibration sensors are used on motors, pumps, fans, gearboxes, and other rotating equipment where casing or bearing surface vibration data is required to support condition monitoring and predictive maintenance programs. They are most common on general-purpose and rolling element bearing machines where continuous or periodic vibration measurement provides early warning of developing mechanical faults without the need for a dedicated rack-based protection system. 

Facilities and operations that depend on vibration sensors include: 

  • Manufacturing plants monitoring motors, pumps, and fans across production lines where predictive maintenance programs replace reactive repair schedules. 

  • Water and wastewater treatment facilities tracking pump and blower condition at distributed, unattended sites using permanently installed industrial vibration sensors. 

  • Food and beverage processing plants monitoring conveyor drives, mixers, and filling line equipment in washdown and temperature-cycling environments. 

  • Mining and mineral processing operations tracking bearing vibration on conveyor drive motors, fans, and process equipment in remote installations. 

  • HVAC and building services applications monitoring fan and pump condition using IO-Link vibration sensors integrated with building automation systems. 

When a vibration sensor fails on an installed motor or rotating asset, a matched replacement restores condition monitoring coverage and keeps predictive maintenance data current.  

Which Brands of Vibration Sensors Does PLC Direct Stock? 

PLC Direct stocks industrial vibration sensors from IFM Electronic, including the VN/VV Series, which are used for predictive maintenance monitoring of motors, pumps, fans, and bearings across general industrial applications. 

  • IFM VN/VV Series Vibration Sensor: IO-Link vibration sensor with integrated signal processing that measures velocity in mm/s RMS, acceleration, and crest factor for continuous bearing vibration and machine health monitoring on motors, pumps, fans, and gearboxes. 

  • IFM VN/VV Series Vibration Sensor: Industrial vibration sensor for predictive maintenance with integrated signal processing, IO-Link interface, and configurable alarm thresholds measuring velocity, acceleration, and crest factor to detect imbalance, misalignment, and bearing damage on rotating equipment. 

All vibration sensors at PLC Direct are available as surplus sealed, refurbished, or used, with condition noted on each product listing. 

What Should You Know Before Ordering Vibration Sensors? 

Hardware condition options: Vibration sensors at PLC Direct are available as surplus sealed, refurbished, and used hardware. Surplus sealed units are factory-sealed stock in original packaging; refurbished units have been tested and restored to operational condition. Used hardware is inspected prior to listing and carries the same 1-year PLC Direct warranty as all other condition grades. 

Compatibility and part identification: IFM vibration sensors in the VN/VV Series use IO-Link communication and require a compatible IO-Link master or analog input module to receive measurement data; confirm the interface type supported by the installed control system before ordering. Sensor mounting configuration, cable length, and connector type are encoded in the part number, so replacement hardware should be ordered by direct part number match against the failed unit's label or instrument list. 

Warranty: All vibration sensor hardware purchased from PLC Direct carries a standard 1-year PLC Direct warranty covering defects and functionality, applicable to surplus sealed, refurbished, and used products. 

PLC Direct supplies vibration sensors hardware for replacement and maintenance purposes and does not provide system design, programming, or integration services. 

Frequently Asked Questions

An industrial vibration sensor measures mechanical parameters at the surface of rotating equipment, typically velocity in mm/s RMS, acceleration in g, and crest factor, to detect developing faults such as imbalance, misalignment, looseness, and bearing damage. Sensors with integrated signal processing, such as the IFM VN/VV Series, output pre-processed condition data directly, reducing the need for external signal conditioning hardware.
A vibration sensor, such as an accelerometer or velocity transducer, measures casing or bearing housing vibration and is used on rolling-element bearing machines for predictive maintenance monitoring. A proximity probe uses eddy-current technology to measure relative shaft motion directly and is the standard sensor type for fluid-film bearing turbomachinery, where shaft displacement is the primary measurement.
IO-Link is a point-to-point communication standard that allows industrial vibration sensors to transmit multi-variable process data and diagnostic information over a standard sensor cable to a compatible IO-Link master. For IO-Link vibration sensors such as the IFM VN/VV Series, IO-Link enables remote configuration of alarm thresholds and access to full measurement data, including velocity, acceleration, and crest factor, through a single connection.
Replacement IFM vibration sensors should be matched by part number to the failed unit, as the suffix encodes mounting configuration, cable length, connector type, and output interface. Confirm that the replacement sensor's IO-Link specification matches the input requirements of the installed control system before ordering.
Surplus vibration sensors and refurbished units can be used in existing installations provided the replacement matches the original part number and interface configuration. PLC Direct stocks surplus sealed, refurbished, and used IFM vibration sensors; contact PLC Direct to confirm availability on specific part numbers and the appropriate condition grade for the application.

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