Excellent PLC
| Company Information | ||||||||
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| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Product Introduction
The Epro PR6426/000-140 32mm Eddy Current Sensor is a high-precision, non-contact monitoring device developed for industrial machinery applications. It is designed to measure shaft vibration, axial displacement, and rotational position in turbines, compressors, generators, and other critical rotating equipment, ensuring safe and efficient operation.
The sensor operates based on the eddy current principle, generating an electromagnetic field at its probe tip. When a conductive target, such as a steel or nickel-alloy shaft, enters this field, eddy currents are induced in the target. These currents modify the electromagnetic field, and the sensor produces a voltage output proportional to the target’s distance. This non-contact measurement method eliminates mechanical wear, ensures long-term reliability, and maintains stable performance under harsh industrial conditions.
With a 32mm sensor head diameter, the PR6426/000-140 is well-suited for large shafts and broad surface targets. It works seamlessly with Epro signal conditioning converters, delivering linear output suitable for real-time condition monitoring and predictive maintenance systems.
Technical Specifications
| Parameter | Description |
|---|---|
| Model | PR6426/000-140 |
| 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 (depending 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 PR6426/000-140 is used extensively in industrial machinery monitoring, providing real-time data for predictive maintenance and operational safety. Typical applications include:
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Steam and gas turbines – Tracking axial displacement and shaft vibration for early detection of faults.
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Compressors and pumps – Monitoring rotor alignment, bearing performance, and vibration trends.
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Generators and motors – Detecting shaft misalignment and abnormal vibrations.
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Gearboxes and turboexpanders – Monitoring eccentric motion and mechanical stress in rotating components.
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Industrial plants – Integration into predictive maintenance systems for continuous machinery protection.
Its rugged construction and IP67-rated housing allow reliable operation in environments with high vibration, dust, oil, and extreme temperatures.
Product Advantages
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Non-Contact Measurement – Eliminates mechanical wear and ensures long-term reliability.
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High Accuracy and Sensitivity – Provides precise readings of displacement and vibration.
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Wide Frequency Response – Captures low and high-frequency vibration signals effectively.
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Industrial-Grade Housing – Stainless steel casing with IP67 protection ensures durability in harsh conditions.
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Large Sensor Head Diameter – 32 mm head diameter ensures accurate performance on large shafts or surfaces.
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Seamless System Integration – Compatible with Epro signal conditioning converters for linear output.
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Temperature Compensation – Maintains accurate measurements across a wide temperature range.
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Proven Industrial Reliability – Extensively used in turbines, compressors, and generators worldwide.
FAQ
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What is the operating principle of the PR6426/000-140?
The sensor operates using the eddy current principle, detecting changes in an electromagnetic field caused by conductive targets. -
Which target materials are suitable for measurement?
Ferromagnetic and conductive materials, such as steel and nickel alloys. -
Can the sensor measure both radial and axial displacement?
Yes, depending on installation orientation and monitoring system configuration. -
What is the frequency response range of the sensor?
DC to 10 kHz (-3 dB), enabling detection of low and high-frequency vibrations. -
How is the sensor connected to monitoring systems?
Via Epro signal conditioning converters, providing linear voltage or current output. -
Does ambient temperature affect measurement accuracy?
Temperature compensation ensures stable and reliable readings across -35 °C to +180 °C. -
Is the PR6426/000-140 suitable for harsh industrial environments?
Yes, the IP67-rated housing ensures reliable operation under vibration, dust, and oil exposure. -
Does the sensor require field calibration?
It is factory-calibrated; optional fine-tuning can be performed using Epro configuration tools. -
Can this sensor be integrated into dual-channel or redundant monitoring systems?
Yes, it supports integration into dual-channel and redundant setups. -
What type of output signal does the sensor provide?
Through Epro converters, the sensor provides a linear voltage or current output 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 variant | 32 mm | 0.8 kg |
| PR6426/000-030 | Converter-compatible version | 32 mm | 0.92 kg |
| PR6426/000-031 | High-precision probe | 32 mm | 0.8 kg |
| PR6426/000-041 | Industrial grade sensor | 32 mm | 0.8 kg |
| PR6426/000-100 | High-performance probe | 32 mm | 0.8 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 |
