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Product Introduction
The Epro PR6424/017-100 16 mm Eddy Current Sensor is a precision non-contact displacement sensor designed for high-performance vibration and shaft-position monitoring in industrial machinery. Using advanced eddy-current technology, it accurately measures both static and dynamic displacement of rotating shafts without physical contact, ensuring high reliability and minimal maintenance. The 16 mm stainless-steel sensor head and robust IP67 housing make it suitable for extreme process environments, including high temperature, high vibration, and chemically aggressive conditions.
Technical Specifications
| Parameter | Details |
|---|---|
| Model Number | PR6424/017-100 |
| 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 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 monitoring of shaft radial displacement and vibration in turbines, compressors, and generators.
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Bearing Gap Measurement – Detects rotor movement relative to bearings for predictive maintenance and fault detection.
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Critical Pumps and Motors – Prevents damage from misalignment, imbalance, or cavitation by providing real-time displacement data.
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Industrial Condition Monitoring – Compatible with Epro CON021 drivers for integration into plant-wide vibration and displacement monitoring systems.
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Predictive Maintenance Programs – Supplies precise displacement signals for diagnostics software and machine health monitoring in power plants, refineries, and chemical plants.
Advantages
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High Accuracy – 8 mV/µm sensitivity ensures precise measurement of shaft displacement with minimal drift.
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Rugged Construction – Stainless-steel IP67 housing offers excellent protection against dust, moisture, and chemical exposure.
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Wide Operating Temperature – Stable performance between −35 °C and +180 °C.
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Fast Dynamic Response – DC to 10 kHz bandwidth captures both low-frequency shaft movements and high-frequency vibrations.
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Non-Contact Design – Eliminates mechanical wear, reducing maintenance and extending operational life.
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Flexible Integration – Fully compatible with Epro CON021 driver modules and most industrial monitoring systems.
FAQ
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Which driver module is recommended for the PR6424/017-100 sensor?
The Epro CON021 driver is recommended for precise excitation, calibration, and temperature compensation. -
How does the sensor maintain accuracy under extreme temperatures?
It uses temperature-stable coil materials and relies on the CON021 driver’s compensation circuits to keep measurements consistent across −35 °C to +180 °C. -
What is the linear measurement range of the sensor?
The sensor provides a linear range of ±2 mm around the calibrated mid-gap, suitable for standard turbine and motor monitoring applications. -
Can the sensor operate in high-vibration environments?
Yes, it withstands continuous vibration up to 20 g within 10–2 000 Hz without affecting signal accuracy. -
Is it compatible with third-party monitoring systems?
Yes, provided impedance matching and proper calibration are performed to maintain measurement accuracy. -
What frequency range can the sensor measure accurately?
The PR6424/017-100 supports DC to 10 kHz, capturing both slow displacement changes and high-frequency vibration events. -
Does the sensor require field calibration?
Field calibration is recommended using a micrometer gap reference to adjust the CON021 driver’s zero and gain settings. -
Can it be used in hazardous locations?
An ATEX-certified version is available, allowing safe use in Zone 1 and Zone 2 hazardous areas when paired with approved barriers. -
What type of output signal does the sensor provide?
It delivers a voltage signal proportional to displacement at 8 mV/µm, compatible with industrial vibration monitoring equipment. -
How does the sensor prevent mechanical wear during operation?
The non-contact eddy-current principle ensures no physical contact with the shaft, eliminating wear and extending service 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 |
| PR6424/017-121 | 16 mm high-accuracy sensor |
| PR6424/018-000 | 16 mm base configuration |
| PR6424/022-100 | High-frequency response model |
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 |
