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Product Introduction
The Epro PR6424/016-100 16 mm Eddy Current Sensor is a high-precision, non-contact displacement probe designed for continuous vibration and shaft-position monitoring in industrial machinery. Leveraging advanced eddy-current technology, it provides accurate measurements of both static and dynamic shaft displacement without physical contact, reducing maintenance requirements and increasing operational reliability. Its 16 mm stainless-steel sensor head, combined with robust IP67 housing, ensures performance in extreme industrial conditions, including high temperatures, high vibration, and chemically aggressive environments.
Technical Specifications
| Parameter | Details |
|---|---|
| Model Number | PR6424/016-100 |
| Manufacturer | Epro (Brüel & Kjær Vibro) |
| Measurement Principle | Non-contact eddy current displacement |
| Sensor Head Diameter | 16 mm |
| Nominal Measuring Range | 0–4 mm (typical, adjustable via CON021 driver) |
| Linear Range | ±2 mm around calibrated mid-gap |
| Sensitivity | 8 mV/µm ±2 % |
| Frequency Response | DC to 10 kHz (−3 dB) |
| Power Supply | ±15 VDC via compatible Epro driver |
| Operating Temperature | −35 °C to +180 °C |
| Storage Temperature | −40 °C to +200 °C |
| Vibration Resistance | 20 g, 10–2 000 Hz |
| Protection Class | IP67 stainless-steel housing |
| Weight | 0.2 kg |
| Compliance | CE, RoHS, optional ATEX for hazardous areas |
Applications
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Turbomachinery Monitoring – Continuous measurement of shaft radial displacement and vibration in turbines, compressors, and generators.
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Bearing Gap and Rotor Position – Provides accurate detection of rotor movement relative to bearings for predictive maintenance.
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Critical Pumps & Motors – Supplies real-time displacement data to prevent misalignment, imbalance, or cavitation damage.
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Industrial Condition Monitoring – Integrates seamlessly with Epro CON021 drivers for plant-wide monitoring systems.
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Predictive Maintenance Programs – Offers precise shaft displacement signals for machine health diagnostics in refineries, power plants, and chemical facilities.
Advantages
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High Accuracy – Maintains 8 mV/µm sensitivity with minimal drift, ensuring reliable displacement readings.
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Rugged Construction – Stainless-steel IP67 housing protects against dust, moisture, and chemical exposure.
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Wide Temperature Range – Operates reliably between −35 °C and +180 °C.
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Fast Dynamic Response – DC to 10 kHz frequency response captures both slow and high-frequency vibrations.
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Non-Contact Operation – Reduces mechanical wear, lowering maintenance requirements and extending sensor life.
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Flexible Integration – Compatible with CON021 driver modules and most industrial monitoring systems.
FAQ
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Which driver module is recommended for the PR6424/016-100?
The Epro CON021 driver is recommended for precise excitation, calibration, and temperature compensation of the sensor. -
How does the sensor maintain stability under extreme temperatures?
The sensor uses temperature-stable coil materials and relies on the CON021 driver’s compensation circuitry to maintain measurement accuracy across −35 °C to +180 °C. -
What is the linear measuring range of the sensor?
The sensor has a linear range of ±2 mm around the mid-gap, suitable for standard industrial shaft monitoring. -
Can the PR6424/016-100 function in high-vibration environments?
Yes, it withstands continuous vibrations up to 20 g over the 10–2 000 Hz frequency range without signal degradation. -
Is the sensor compatible with non-Epro monitoring systems?
Yes, it can integrate with third-party systems provided proper impedance matching and calibration are performed. -
What frequency range does the sensor support?
DC to 10 kHz, allowing it to capture both slow shaft movements and high-frequency vibration events accurately. -
Is field calibration required?
Yes, field calibration is recommended using a precision micrometer gap reference to adjust the driver’s zero and gain. -
Can the sensor be used in hazardous areas?
An ATEX-certified version is available for safe operation in Zone 1 or Zone 2 hazardous environments when used with approved barriers. -
What type of output signal does it provide?
The sensor delivers a voltage signal proportional to shaft displacement at 8 mV/µm, compatible with most vibration monitoring systems. -
How does the sensor prevent wear during operation?
The non-contact eddy-current design ensures no physical contact with the shaft, eliminating mechanical wear and extending operational life.
Recommended Related Models (Same Series)
| Model Number | Description |
|---|---|
| PR6424/000-030 | Standard 8 mm eddy current probe for general machinery |
| PR6424/010-000 | 8 mm high-temperature variant |
| PR6424/015-000 | 11 mm extended-range probe |
| PR6424/017-100 | 16 mm high-accuracy sensor |
| PR6424/017-121 | 16 mm high-performance sensor |
| PR6424/018-000 | 16 mm base configuration |
Popular Epro Models (Same Brand)
| Model Number | Description |
|---|---|
| MMS6210 | Advanced machine monitoring system for turbines and compressors |
| PR6423/005-010 | Compact eddy current probe for limited-space applications |
| PR6425/010-140 | High-temperature displacement sensor |
| MMS6312 | Multi-channel condition monitoring module |
| CON021 | Universal driver module for Epro eddy current sensors |
| MMS6110 | Vibration monitoring and diagnostics unit |
