Vibration Sensors

Industrial vibration sensors measure acceleration, velocity, or displacement on rotating equipment — motors, pumps, fans, gearboxes, bearings — to detect imbalance, misalignment, looseness, and bearing wear before catastrophic failure. They are the field-level data source for predictive maintenance and condition monitoring programs.

Enicstra stocks vibration sensors from ifm efector (VSE/VSA), Wilcoxon, PCB Piezotronics, SKF, Bently Nevada, and similar manufacturers. Inventory includes IEPE accelerometers with constant-current input, 4–20 mA vibration transmitters with onboard RMS/peak calculation, eddy-current proximity probes for shaft displacement, and integrated sensor-transmitter assemblies. Every sensor is bench-tested for output integrity and backed by our 12-month functional warranty.

Vibration sensor selection depends on the frequency range of interest, mounting method (stud, magnet, adhesive), and the output signal expected by your monitoring system. Send the OEM part number plus your data-acquisition interface; most quote inquiries reply within 1–2 business days.

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Buying guide

Choosing Vibration Sensors components

Vibration sensor selection is governed by what you're trying to detect, where on the machine you're mounting the sensor, and how the data gets to your monitoring system. A sensor optimized for low-speed bearing analysis won't see the high-frequency content from a gearbox; a quick-mount magnetic sensor isn't precise enough for permanent installation.

Specifications to confirm before ordering:

Sensor type — IEPE accelerometer, 4–20 mA transmitter, eddy-current proximity, or velocity probe
Sensitivity (mV/g for accelerometers, mV/mm/s for velocity)
Frequency range (typically 0.5 Hz to 10 kHz for general industrial)
Output signal — voltage (IEPE), 4–20 mA loop-powered, or digital protocol
Mounting style — stud (1/4-28 UNF most common), magnetic, adhesive, threaded
Operating temperature range (some bearing applications exceed +120 °C)
IP rating for the environment
Hazardous area certification (intrinsically safe, explosion-proof)
Cable termination and length

Sensor type selection guidance:

IEPE accelerometer: general-purpose, broad frequency range, needs constant-current power and signal conditioning
4–20 mA transmitter: direct connection to PLC analog input, on-board RMS/peak calculation, easier integration
Eddy-current proximity probe: shaft displacement measurement, used on large rotating machinery
Velocity transducer: traditional low-frequency machinery monitoring, mechanical resonance limited

For predictive maintenance programs, the data acquisition system imposes additional constraints — the sensor's output signal, cable shielding, and grounding scheme must match what the analyzer expects. Verify before ordering.

Related categories Frequently asked questions

Can you supply discontinued Wilcoxon or PCB Piezotronics accelerometers?

Yes — legacy industrial accelerometers from these and similar manufacturers are common requests, especially for installed condition-monitoring systems. Send the part number for availability.

IEPE versus 4–20 mA — which do I need?

IEPE accelerometers give broadband acceleration signals (useful for spectral analysis) but require constant-current power and signal conditioning. 4–20 mA vibration transmitters do the RMS/peak calculation internally and connect directly to PLC analog inputs — much easier for plant-wide monitoring but less suitable for detailed analysis.

How should the sensor be mounted?

For permanent installation: stud-mount with a drilled-and-tapped boss on the equipment provides the best signal transfer. Magnetic mounts work for periodic measurements but limit the high-frequency response. Adhesive mounting is used where drilling isn't allowed but is the least preferred for long-term installation.

Are vibration sensors new, surplus, or used?

Most stock is new-old-stock — unused, often in original packaging. Some legacy sensors come from tested system removals. Each product page lists condition where known.

What about hazardous area applications?

For Class 1 Division 1 or 2, ATEX Zone 0/1/2, we stock intrinsically safe and explosion-proof vibration sensors from major manufacturers. The barrier or isolator required for IS sensors is a separate component listed under our IS Barriers category.