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Product Introduction
The Epro PR6426/000-041 32mm Eddy Current Sensor is a high-precision, non-contact measurement device designed for industrial machinery monitoring. This sensor is specifically engineered to measure shaft vibration, axial displacement, and rotational position in critical rotating equipment. It is widely used in turbines, compressors, generators, and other machinery where accurate and reliable monitoring is essential for predictive maintenance.
The PR6426/000-041 operates on the eddy current principle, generating an electromagnetic field at the sensor tip. Conductive targets, such as steel shafts, alter this field, producing a voltage proportional to displacement. This non-contact method eliminates mechanical wear, ensures long-term reliability, and allows the sensor to operate in harsh environments.
With a 32mm sensor head diameter, the device is ideal for larger shafts or wider target surfaces, providing consistent measurement accuracy. The sensor is compatible with Epro’s standard signal conditioning converters, allowing integration with monitoring systems for continuous machinery protection.
Technical Specifications
| Parameter | Description |
|---|---|
| Model | PR6426/000-041 |
| Sensor Type | Eddy Current Proximity Probe |
| Measuring Principle | Non-contact electromagnetic induction (eddy current) |
| Sensor Head Diameter | 32 mm |
| Measuring Range | 0.25 mm – 4.0 mm (typical, dependent on target material) |
| Linearity | ≤ ±1% of full scale |
| Frequency Response | DC to 10 kHz (-3 dB) |
| Sensitivity | 4–8 mV/µm depending on converter |
| Target Material | Ferromagnetic and conductive materials (e.g., steel, nickel alloys) |
| Operating Temperature | -35 °C to +180 °C |
| Storage Temperature | -40 °C to +200 °C |
| Housing Material | Stainless steel (AISI 316L) |
| Protection Class | IP67 |
| Mounting Thread | M32 × 1.5 |
| Output Signal | Compatible with Epro signal conditioning converters |
| Weight | 0.8 kg |
| Compliance | CE, RoHS, optional ATEX Zone 2 |
Product Applications
The PR6426/000-041 is designed for continuous monitoring of rotating machinery, offering real-time data for maintenance and safety systems. Typical applications include:
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Steam and gas turbines – Measuring axial displacement and shaft vibration for early fault detection.
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Compressors and pumps – Monitoring rotor alignment and bearing conditions.
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Generators and motors – Detecting shaft movement to prevent mechanical failures.
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Gearboxes and turboexpanders – Monitoring eccentric motion and mechanical stress.
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Industrial process plants – Integration with predictive maintenance systems for machinery protection.
Its robust stainless-steel housing and IP67 protection make it suitable for high-temperature, dusty, and oily environments.
Product Advantages
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Non-Contact Measurement – Eliminates wear, ensuring long-term reliability.
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High Accuracy and Sensitivity – Provides precise displacement and vibration measurement over its full range.
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Wide Frequency Response – Capable of capturing low- and high-frequency vibration events.
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Rugged Industrial Design – Stainless steel housing and IP67 sealing for protection against dust, moisture, and vibration.
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Large Sensor Head – 32mm diameter ensures wide coverage and reliable measurements for larger shafts.
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Easy Integration – Compatible with Epro signal conditioning converters for linear output to monitoring systems.
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Stable Performance in Extreme Conditions – Maintains accuracy under high temperatures and mechanical stress.
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Proven Industrial Reliability – Extensively used in turbines, compressors, and generators worldwide.
FAQ
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What principle does the PR6426/000-041 sensor operate on
The sensor operates on the eddy current principle, detecting variations in the electromagnetic field caused by conductive targets. -
Which target materials are suitable for this sensor?
It is designed for ferromagnetic and conductive materials such as steel and nickel alloys. -
Can the sensor measure both radial and axial displacement?
Yes, depending on its installation orientation and setup with monitoring systems. -
What is the sensor’s frequency response range?
The sensor operates from DC to 10 kHz (-3 dB), allowing it to capture low and high-frequency shaft vibrations. -
How is the sensor integrated into monitoring systems?
It connects via compatible Epro signal conditioning converters, providing a linear voltage or current output to monitoring systems. -
Does temperature affect measurement accuracy?
The sensor includes compensation features to maintain accurate readings over a wide temperature range (-35 °C to +180 °C). -
Is the sensor suitable for high-vibration industrial environments?
Yes, its robust housing and design provide stable signal performance under mechanical vibration and shock. -
Does the sensor require calibration in the field?
It is factory-calibrated for immediate use, though fine-tuning can be done using Epro configuration tools if needed. -
Can the PR6426/000-041 be used in dual-channel monitoring systems?
Yes, it is compatible with redundant and dual-channel monitoring architectures for critical machinery applications. -
What type of signal output does the sensor provide?
The sensor, through Epro converters, provides a linear voltage or current output that is proportional to the displacement of the target.
Related Models (Same Series)
| Model | Description | Sensor Head Diameter | Weight |
|---|---|---|---|
| PR6426/000-000 | Standard eddy current probe | 32 mm | 0.8 kg |
| PR6426/000-010 | High-temperature version | 32 mm | 0.8 kg |
| PR6426/000-020 | Pressure-resistant variant | 32 mm | 0.8 kg |
| PR6426/000-030 | Converter-compatible model | 32 mm | 0.92 kg |
| PR6426/000-031 | Standard high-precision probe | 32 mm | 0.8 kg |
| PR6426/000-050 | Explosion-proof version | 32 mm | 0.9 kg |
Popular Models from the Same Brand (Epro)
| Model | Description | Measurement Type | Weight |
|---|---|---|---|
| PR6423/002-030 | Standard eddy current sensor | Vibration/Displacement | 0.6 kg |
| PR6424/014-040 | Proximity probe | Axial displacement | 0.7 kg |
| PR6425/010-030 | Shaft vibration sensor | Vibration | 0.8 kg |
| PR6422/010-030 | Compact displacement sensor | Bearing displacement | 0.5 kg |
| MMS3120/022-100 | Vibration monitoring module | Condition monitoring | 1.2 kg |
| MMS6822 | Dual-channel vibration monitor | Shaft and casing vibration | 1.5 kg |
