Product Introduction
The Epro PR6426/010-010 32mm Eddy Current Sensor is a high-performance non-contact displacement and vibration sensor designed for industrial machinery monitoring and protection. It operates on the eddy current principle, which allows it to precisely measure the distance between the probe and a conductive target surface without physical contact. This ensures exceptional reliability, minimal wear, and superior measurement stability even under extreme environmental conditions.
As part of Epro’s PR6426 series, this sensor offers enhanced accuracy, wide frequency response, and high temperature endurance, making it ideal for critical applications such as turbines, compressors, motors, and pumps. Its 32 mm probe head provides a stable electromagnetic field and excellent signal linearity. The PR6426/010-010 is typically paired with a CON021 converter, which provides signal conditioning and ensures compatibility with standard monitoring systems, including Epro MMS and other machinery protection platforms.
Engineered to perform in demanding industrial conditions, this model delivers reliable results even in high vibration, high temperature, and electrically noisy environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | PR6426/010-010 |
| Manufacturer | Epro |
| Sensor Type | Eddy Current Displacement and Vibration Sensor |
| Measurement Principle | Non-contact eddy current technology |
| Measurement Range | 1.0 mm to 2.5 mm (depending on target material) |
| Sensor Head Diameter | 32 mm |
| Weight | 0.8 kg |
| Frequency Response | 0.5 Hz to 20 kHz |
| Output Signal | Differential AC voltage (with converter interface) |
| Operating Temperature | -35°C to +180°C |
| Storage Temperature | -40°C to +200°C |
| Power Supply (with converter) | +24 VDC nominal |
| Target Material | Ferromagnetic metals (steel, iron, nickel alloys) |
| Linearity Error | ≤ ±1% of full-scale range |
| Mounting Type | Threaded or flange mounting |
| Protection Rating | IP65 |
| Compliance | CE / ATEX Zone 2 certified |
| Typical Use | Shaft displacement, vibration, and position measurement |
Applications
The PR6426/010-010 32mm Eddy Current Sensor is widely used across multiple industries for condition monitoring and protection of critical rotating machinery. Its robust design and superior accuracy make it suitable for both standard and high-performance applications.
Typical applications include:
-
Turbine Vibration Monitoring: Measures radial and axial shaft vibrations in gas, steam, and hydro turbines.
-
Compressor Condition Monitoring: Detects imbalance, bearing wear, and shaft movement in high-speed compressors.
-
Motor and Generator Supervision: Monitors shaft displacement and vibration for predictive maintenance.
-
Pump and Fan Systems: Provides continuous monitoring for imbalance or misalignment.
-
Process Equipment Control: Ensures accurate feedback in automation and mechanical control systems.
-
High-Temperature Industrial Processes: Performs reliably in high heat environments such as power plants and refineries.
The sensor’s precise measurement capability supports predictive maintenance strategies, enabling early fault detection and reducing unplanned shutdowns.
Advantages
The Epro PR6426/010-010 sensor offers a combination of advanced features and rugged construction, ensuring maximum operational reliability and precision.
-
High Accuracy and Stability: Provides consistent measurements with minimal drift across temperature variations.
-
Non-Contact Measurement: Eliminates mechanical wear, extending operational life and reducing maintenance requirements.
-
Wide Frequency Response: Capable of detecting both low-frequency shaft movements and high-frequency vibrations.
-
Robust Industrial Design: Withstands vibration, shock, dust, and oil contamination.
-
Temperature Resilience: Operates up to +180°C, suitable for high-heat applications such as turbine bearings.
-
Excellent Electromagnetic Immunity: Designed to resist interference from surrounding industrial equipment.
-
Simple Integration: Fully compatible with Epro’s CON021 converter and other industrial monitoring systems.
-
Long-Term Reliability: Ideal for continuous monitoring in demanding industrial settings.
FAQ
-
What type of measurement does this sensor perform?
It measures displacement, vibration, and shaft position in rotating machinery using non-contact eddy current technology. -
What materials can be used as targets for measurement?
The sensor is optimized for ferromagnetic materials such as steel, iron, and nickel alloys. -
What is the frequency response range of this sensor?
It supports a frequency response from 0.5 Hz up to 20 kHz, enabling accurate measurement across a wide dynamic range. -
Is this sensor suitable for high-temperature applications?
Yes, it operates effectively in temperatures up to +180°C, suitable for use in turbines, compressors, and engines. -
How is the sensor typically connected to the monitoring system?
It connects via a cable to a compatible Epro CON021 converter, which conditions and transmits the signal to the monitoring system. -
What is the linear accuracy of the sensor?
It offers a linearity error within ±1% of the full-scale measurement range. -
Can it detect both static and dynamic displacements?
Yes, the sensor can simultaneously detect both static shaft position and dynamic vibration signals. -
Does the sensor require frequent calibration?
Calibration requirements are minimal due to its stable non-contact measurement principle. Periodic verification during maintenance cycles is recommended. -
Can this sensor be integrated into third-party monitoring systems?
Yes, it provides standard output signals compatible with most industrial vibration and displacement monitoring platforms. -
How does the sensor handle electrical noise in industrial environments?
It incorporates robust electromagnetic shielding and differential signal design to ensure accurate readings in noisy electrical environments.
Related and Series Models
| Model Number | Description |
|---|---|
| PR6426/000-000 | Standard 32mm eddy current sensor for general displacement monitoring |
| PR6426/001-010 | High-temperature version with extended linear range |
| PR6426/005-010 | Precision probe for short-range high-sensitivity applications |
| PR6426/008-000 | Compact probe for tight installation spaces |
| PR6426/010-000 | Standard 32mm probe paired with converter module |
| PR6426/012-000 | Explosion-proof version for hazardous industrial environments |
Popular Epro Models
| Model Number | Description |
|---|---|
| PR6423/002-030+CON021 | Eddy current probe for vibration measurement and condition monitoring |
| PR6423/005-010 | Compact displacement sensor for high-speed machinery |
| PR6424/01CS | Proximity sensor designed for precision shaft vibration detection |
| PR6424/014-040+CON021 | Advanced eddy current probe for turbine and compressor monitoring |
| MMS3120/022-100 | Multi-channel machine monitoring and protection system |
| PR6423/001-010-CN | Industrial eddy current sensor with integrated signal conditioning |
Excellent PLC
