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- PR6423/017-030-CN
- 8mm Eddy Current Sensor
- Germany
- 8 mm
- 0.1 kg
- Xiamen, China
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Product Overview
The Epro PR6423/017-030-CN 8mm Eddy Current Sensor is a non-contact displacement sensor used to detect relative movement between the sensor and a conductive target. It belongs to the PR6423 Series and is used in rotating machinery monitoring systems where shaft position, displacement, or vibration-related movement needs to be measured during operation.
The sensor is installed close to a conductive shaft or other suitable target surface. As the target moves relative to the sensing head, the eddy current response changes, allowing the associated monitoring electronics to determine changes in the target-to-sensor relationship.
This type of measurement is useful on turbines, compressors, generators, motors, pumps, and other rotating equipment. Because the sensor does not require physical contact with the rotating component, it can continuously monitor shaft movement without introducing mechanical contact at the sensing point.
The PR6423/017-030-CN operates as part of a complete measurement channel. Correct sensor mounting, target geometry, installation gap, cable condition, and compatible signal-conditioning equipment all contribute to the resulting measurement quality.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Epro |
| Model | PR6423/017-030-CN |
| Product Family | PR6423 Series |
| Product Type | 8mm Eddy Current Sensor |
| Primary Function | Non-contact displacement measurement |
| Sensing Principle | Eddy Current |
| System Role | Rotating machinery displacement sensing |
| Typical Application | Shaft vibration and position monitoring |
| Sensor Head Diameter | 8 mm |
| Weight | 0.1 kg |
Product Features
- PR6423 Series eddy current sensor for machinery monitoring.
- Non-contact measurement of conductive target movement.
- Suitable for shaft displacement and position monitoring.
- Supports vibration-related measurement on rotating equipment.
- Suitable for radial and axial movement monitoring applications.
- Works with compatible eddy current driver or signal-conditioning equipment.
- Can be integrated into continuous machinery monitoring systems.
- Applicable to turbines, compressors, generators, motors, pumps, and other rotating machinery.
- Requires correct sensor positioning and a suitable conductive target.
Working Principle
The PR6423/017-030-CN detects changes in the distance between its sensing head and a conductive target by means of an eddy current field. When the target moves, the electrical response of the sensing circuit changes accordingly.
The associated driver or signal-conditioning unit processes this response and converts it into a usable measurement for the machinery monitoring system. Depending on the installation, the resulting signal can represent shaft displacement, position, or vibration-related movement.
Rotating Shaft / Conductive Target → PR6423/017-030-CN → Eddy Current Driver → Machinery Monitoring System → Alarm / Protection
The sensor does not independently make the final protection decision. Alarm and trip functions are normally handled by the downstream monitoring and protection system. A stable mechanical installation is essential because movement of the sensor itself can be interpreted as movement of the monitored shaft.
Role in an Epro Eddy Current Monitoring Architecture
The PR6423/017-030-CN occupies the field sensing stage of the machinery monitoring channel. It detects changes in target position and provides the corresponding sensing response to the associated driver.
Rotating Machinery → PR6423/017-030-CN → Signal Conditioning → Monitoring System → Alarm / Protection
| System Element | Function |
|---|---|
| Rotating Shaft | Provides the conductive target being monitored |
| PR6423/017-030-CN | Detects changes in target-to-sensor distance |
| Eddy Current Driver | Provides sensor interface and signal conditioning |
| Monitoring System | Evaluates displacement, position, or vibration information |
| Alarm System | Indicates configured abnormal operating conditions |
| Protection System | Initiates configured protective actions |
The complete sensing chain should be considered when diagnosing abnormal readings rather than replacing the sensor immediately.
Industrial Applications
| Application | Typical Use |
|---|---|
| Steam Turbines | Shaft displacement and position monitoring |
| Gas Turbines | Radial shaft movement measurement |
| Turbo Compressors | Shaft vibration and displacement monitoring |
| Generators | Rotor movement and position monitoring |
| Large Motors | Shaft condition monitoring |
| Pumps | Rotating machinery displacement measurement |
| Expanders | High-speed shaft movement monitoring |
| Industrial Turbomachinery | Continuous shaft monitoring |
| Process Plants | Critical rotating equipment protection |
Installation and Maintenance
- Confirm that the PR6423/017-030-CN matches the intended Epro monitoring arrangement before installation.
- Verify the associated driver, signal-conditioning equipment, monitoring system, and field wiring.
- Isolate the monitored machinery and follow applicable safety procedures before working near rotating equipment.
- Inspect the sensor body and sensing head for mechanical damage, contamination, or deformation.
- Confirm that the mounting arrangement securely holds the sensor without unwanted movement.
- Position the sensor correctly relative to the conductive shaft or target surface.
- Establish the required sensor-to-target gap according to the applicable monitoring-system requirements.
- Route the sensor cable to avoid excessive bending, mechanical stress, and avoidable electrical interference.
- Check connectors and terminations for secure attachment and signs of contamination or damage.
- Verify the sensor response through the associated driver or signal-conditioning equipment after installation.
- Investigate unstable readings by checking sensor position, target condition, cable integrity, and driver operation.
- After replacement, verify the complete measurement channel and confirm that the machinery monitoring system receives the expected signal before returning the equipment to normal operation.
Compatible System Components
| Component | Function |
|---|---|
| Epro PR6423 Series Driver | Provides the required sensor interface and signal handling |
| Eddy Current Signal Converter | Conditions the sensor measurement response |
| Proximity Extension Cable | Connects the sensor to associated electronics |
| Machinery Monitoring System | Processes displacement and vibration information |
| Monitoring Rack / Module | Receives and evaluates the conditioned signal |
| Alarm System | Indicates abnormal machinery conditions |
| Protection System | Generates configured alarm or shutdown responses |
| Rotating Shaft / Conductive Target | Provides the monitored target surface |
Recommended Related Models
| Model / Product Family | Product Type | Typical Application |
|---|---|---|
| Epro PR6423 Series | Eddy Current Sensor Family | Rotating machinery displacement sensing |
| Epro PR6423/014 Series | 8mm Eddy Current Sensor | Shaft movement monitoring |
| Epro PR6423/015 Series | 8mm Eddy Current Sensor | Shaft displacement and position sensing |
| Epro PR6423/016 Series | 8mm Eddy Current Sensor | Conductive target displacement monitoring |
| Epro PR6423/017 Series | 8mm Eddy Current Sensor | Rotating machinery monitoring |
| Epro PR6423 Signal Converter | Eddy Current Signal Converter | Sensor signal conditioning |
| Epro CON021 | Eddy Current Signal Converter | PR6423 sensor signal interface |
| Epro CON031 | Eddy Current Signal Converter | PR6423 sensor signal interface |
Key Advantages
- Provides non-contact sensing of conductive target movement.
- Suitable for continuous rotating machinery displacement monitoring.
- Supports shaft position and vibration-related measurement applications.
- Integrates with compatible Epro driver and signal-conditioning equipment.
- Suitable for turbines, compressors, generators, motors, pumps, and other rotating machinery.
- Allows shaft movement to be monitored without physical contact with the rotating target.
Technical FAQs
What does the CN suffix indicate on the PR6423/017-030-CN model?
The CN suffix is part of the complete model designation and should be retained when identifying or replacing the sensor. The complete part number should be matched against the installed monitoring configuration rather than selecting a sensor only by its series or diameter.
How does probe mounting affect the measured shaft movement?
The monitoring system measures the relative position between the sensor and target. If the sensor mounting is loose or mechanically displaced, the resulting movement can appear in the measurement as shaft displacement, so mounting rigidity is important.
Can the PR6423/017-030-CN measure a non-conductive target?
Eddy current sensing requires an appropriate conductive target for the intended measurement response. Target material, geometry, and surface condition should therefore be verified when planning or modifying an installation.
What is a useful first check when the measurement suddenly becomes unstable?
Inspect the sensor mounting and sensor-to-target relationship first. Then check the cable, connectors, driver or signal converter, and monitoring input. This sequence helps distinguish a mechanical installation issue from an electrical or sensor-related problem.