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Product Introduction
The Epro PR6424/116-021 Eddy Current Sensor is a precision proximity probe designed for non-contact measurement of shaft vibration, displacement, and position in rotating machinery. As part of the widely adopted PR6424 series, this model is optimized for critical condition monitoring applications and integrates seamlessly with Epro’s CON series converters, ensuring accurate linearization and reliable signal transmission.
With a 16 mm sensor head diameter and robust stainless-steel body, the PR6424/116-021 is specifically engineered to perform in harsh industrial environments such as power plants, oil & gas facilities, and heavy machinery operations. Its high accuracy and frequency response make it indispensable in predictive maintenance and machinery protection systems.
Product Parameters
| Parameter | Specification |
|---|---|
| Model | PR6424/116-021 |
| Sensor Type | Eddy Current / Proximity Probe |
| Sensor Head Diameter | 16 mm |
| Measuring Range | Up to 2 mm (shaft material dependent) |
| Frequency Response | DC to 20 kHz |
| Linearity | ≤ ±1% of full-scale range |
| Compatible Converters | CON021, CON041, and other Epro CON modules |
| Output Signal | Voltage proportional to shaft displacement |
| Operating Temperature Range | -35 °C to +180 °C (sensor tip) |
| Storage Temperature Range | -40 °C to +200 °C |
| Housing Material | Stainless steel |
| Mounting Thread | Metric or UNF |
| Cable Type | Integrated coaxial cable |
| Protection Class | IP65 or higher (depending on installation) |
| Weight | 0.2 kg |
Product Applications
The PR6424/116-021 is suitable for a wide range of industrial monitoring and protection systems. Main applications include:
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Steam and Gas Turbines – Monitoring shaft vibration and axial displacement to detect instability and prevent mechanical damage.
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Compressors – Continuous measurement of shaft dynamics for imbalance, oil whirl, or surge conditions.
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Pumps – Identifying early signs of cavitation, rotor misalignment, or shaft deflection.
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Electric Motors & Generators – Ensuring stable shaft performance under varying loads.
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Bearing Monitoring – Tracking relative shaft movement to detect lubrication film failures.
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Condition Monitoring Systems – Integration with Epro MMS and third-party systems for predictive maintenance.
Product Advantages
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High Accuracy: Delivers reliable measurements with linearity within ±1% of full scale.
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Non-Contact Technology: Ensures zero mechanical wear and extended monitoring capability.
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Robust Design: Stainless-steel construction makes it resistant to corrosion and industrial stress.
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Temperature Resistance: Operates efficiently up to +180 °C at the probe tip.
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Wide Frequency Response: Suitable for both static displacement and dynamic vibration monitoring.
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System Compatibility: Fully compatible with Epro converters such as CON021 and CON041.
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Interference Protection: Shielded cable design minimizes electromagnetic disturbances.
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Proven Reliability: Used in critical rotating equipment worldwide for continuous operation.
FAQ
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How does the PR6424/116-021 measure shaft vibration?
It operates on the eddy current principle, where changes in the magnetic field induced by the shaft surface generate a voltage proportional to displacement. -
Which converter is best suited for this sensor?
The sensor pairs optimally with CON021 or CON041, which linearize the probe signal and provide standardized voltage outputs. -
What is the maximum dynamic frequency response supported?
The sensor provides a frequency response from DC to 20 kHz, suitable for detecting both static and dynamic shaft movements. -
Can it be used for both radial and axial monitoring?
Yes, depending on mounting orientation, the sensor can measure either radial shaft vibration or axial thrust position. -
How does the probe maintain measurement linearity?
The matched probe and converter combination ensures linearity within ±1% of the full-scale measuring range. -
What materials are recommended for target shafts?
The sensor is designed primarily for conductive materials, with steel being the most common application target. -
Does the sensor require recalibration after installation?
No, it is factory-calibrated with its converter, ensuring accurate operation without additional adjustments. -
How is signal integrity preserved in electrically noisy environments?
The integrated coaxial cable and shielding protect the output from EMI and RFI interference. -
Can this sensor be integrated into third-party monitoring platforms?
Yes, after conversion via CON modules, the standardized voltage output can interface with most condition monitoring systems. -
What makes this sensor suitable for turbine and compressor applications?
Its non-contact operation, wide frequency response, and thermal resilience ensure accurate measurements under the demanding conditions of high-speed rotating machinery.
Recommended Related Models (Same Series / Family)
| Model | Description |
|---|---|
| PR6424/000-000 | Standard 16 mm Eddy Current Sensor |
| PR6424/006-131+CON041 | Variant with CON041 converter, enhanced stability |
| PR6424/010-130+CON021 | 16 mm sensor with CON021 converter |
| PR6424/013-030+CON021 | General-purpose version with CON021 |
| PR6424/014-040 | High-temperature variant for extreme environments |
| PR6424/01+CON011 | Probe with CON011 converter, versatile use |
Popular Models from the Same Brand (Epro)
| Model | Description |
|---|---|
| PR6423/005-010 | Compact 8 mm Eddy Current Sensor |
| PR6423/002-030 | Slim probe for space-limited applications |
| MMS3120/022-100 | Machinery Monitoring System Module |
| MMS3125/022-020 | Advanced Condition Monitoring Module |
| CON021 | Universal Converter for PR642x series |
| CON041 | Diagnostic Converter with extended functionality |
