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- PR6423/011-110-CN
- 8mm Eddy Current Sensor
- Germany
- 8 mm
- 0.1 kg
- Xiamen, China
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Product Overview
The Epro PR6423/011-110-CN 8mm Eddy Current Sensor is a non-contact eddy current probe for monitoring the relative position and movement of conductive machine components. It belongs to the PR6423 Series and is used as the sensing element in machinery condition monitoring and protection systems.
The probe detects changes in the distance between its sensing tip and a conductive target, typically a rotating shaft. Shaft movement changes the electromagnetic response at the probe tip, allowing mechanical displacement to be monitored without placing the sensor in contact with the rotating surface.
The PR6423/011-110-CN normally operates with compatible signal-conditioning electronics. The conditioned signal can be transferred to machinery monitoring equipment for observing shaft position, displacement, eccentricity, or vibration-related movement.
This type of measurement is commonly applied to turbines, compressors, pumps, generators, motors, and other rotating equipment. When replacing an installed probe, the sensor variant, associated converter, cable, mounting arrangement, and monitoring input should be checked together.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Eddy Current Sensor |
| Product Series | PR6423 Series |
| Model | PR6423/011-110-CN |
| Sensor Type | 8mm Eddy Current Sensor |
| Measurement Method | Non-Contacting Eddy Current Measurement |
| Target Type | Conductive Machine Target |
| Application | Rotating Machinery Monitoring |
| Sensor Head Diameter | 8 mm |
| Weight | 0.1 kg |
Product Features
- 8 mm eddy current sensing technology for non-contact measurement
- Detects movement of conductive machine targets
- Suitable for rotating shaft position and displacement monitoring
- Applicable to radial and axial movement measurements
- Can support eccentricity and vibration-related monitoring
- Operates with compatible signal-conditioning electronics
- Suitable for machinery condition monitoring systems
- Applicable to machinery protection installations
- Useful for maintenance and replacement of compatible PR6423 Series systems
Working Principle
The PR6423/011-110-CN operates by generating an electromagnetic field around the probe tip and detecting changes caused by a nearby conductive target.
Conductive Machine Target → PR6423/011-110-CN → Signal Conditioning Electronics → Machinery Monitoring System
When the monitored shaft changes position relative to the probe, the probe-to-target distance changes. This modifies the eddy-current response generated in the conductive target. The associated signal-conditioning electronics processes this response into a measurement signal for the monitoring system.
Typical measurement functions include:
- Shaft radial displacement
- Shaft axial position
- Rotor eccentricity
- Shaft vibration
- Rotational movement
- Machinery protection measurements
The probe remains fixed while the rotating target moves through the measurement field, allowing continuous non-contact monitoring.
Role in a Rotating Machinery Monitoring Architecture
The sensor forms the measurement point between the rotating machine and the downstream monitoring electronics.
Rotating Shaft → PR6423/011-110-CN → Signal Conditioner → Machinery Monitor → Alarm / Protection
| System Element | Function |
|---|---|
| Rotating Shaft | Provides the conductive measurement target |
| PR6423/011-110-CN | Detects changes in target-to-probe distance |
| Signal Conditioner | Processes the probe response into a usable signal |
| Machinery Monitor | Receives and evaluates the measurement |
| Alarm System | Monitors configured operating limits |
| Protection System | Initiates protective action when required |
Industrial Applications
| Application | Typical Use |
|---|---|
| Steam Turbines | Shaft displacement and vibration monitoring |
| Gas Turbines | Rotor movement and machinery protection |
| Hydro Turbines | Shaft position and dynamic movement monitoring |
| Turbo Compressors | Rotor displacement measurement |
| Centrifugal Compressors | Shaft condition monitoring |
| Centrifugal Pumps | Shaft movement and mechanical monitoring |
| Generators | Rotor position and vibration measurement |
| Electric Motors | Shaft movement monitoring |
| Industrial Fans | Rotating shaft condition monitoring |
| Process Machinery | Continuous mechanical condition monitoring |
Installation and Maintenance
- Verify that the PR6423/011-110-CN matches the existing machinery monitoring system.
- Confirm compatibility with the associated signal-conditioning electronics before installation.
- Check that the monitored shaft or target surface is suitable for eddy-current measurement.
- Install the probe securely at the specified measurement position.
- Establish the required probe-to-target gap for the applicable measurement chain.
- Check probe alignment relative to the monitored shaft.
- Inspect the mounting arrangement for looseness or mechanical movement.
- Connect the sensor using the appropriate cable and connector arrangement.
- Route sensor wiring away from strong electrical interference where practical.
- Verify the signal-conditioning electronics and monitoring input before commissioning.
- Observe the measurement during machine startup and compare it with expected shaft behavior.
- Inspect the probe tip, cable, connectors, and mounting hardware during scheduled maintenance.
- If the signal becomes unstable, check the probe gap, alignment, cable, converter, target condition, and monitoring input.
- Replace the sensor only after installation and the rest of the signal path have been checked.
An abnormal measurement can result from installation conditions, cable faults, signal-conditioning problems, or monitoring-system issues. Checking the complete measurement chain helps distinguish a sensor fault from an external problem.
Related Components
| Component | Function |
|---|---|
| Epro PR6423/011-110-CN | 8 mm eddy-current sensing element |
| Compatible Signal Converter | Provides sensor excitation and signal conditioning |
| Sensor Cable | Connects the probe to the signal-conditioning electronics |
| Machinery Monitor | Processes and displays the conditioned measurement |
| Vibration Monitoring System | Performs continuous machinery monitoring |
| Probe Mounting Hardware | Maintains the sensor position |
| Machine Shaft / Rotor | Provides the conductive measurement target |
| Machinery Protection System | Provides alarm and trip functions |
| Monitoring Cabinet | Houses associated monitoring electronics |
| Grounding System | Supports signal integrity and installation stability |
Recommended Related Models
| Model / Series | Product Type | Typical Application |
|---|---|---|
| PR6423/011-110-CN | 8 mm Eddy Current Sensor | Shaft displacement and position monitoring |
| PR6423/011 Series | 8 mm Eddy Current Sensor | Rotating machinery measurement |
| PR6423 Series | Eddy Current Sensor Series | Machinery condition monitoring |
| PR6423/010 Series | 8 mm Eddy Current Sensor | Shaft displacement and position measurement |
| PR6422 Series | Eddy Current Sensor | Rotating machinery monitoring |
| PR6424 Series | Eddy Current Sensor | Shaft measurement applications |
| PR6425 Series | Eddy Current Sensor | Machinery displacement monitoring |
| PR6426 Series | Eddy Current Sensor | Critical machinery measurement |
| CON021 | Eddy Current Signal Converter | Signal conditioning for compatible PR6423 sensors |
| CON031 | Eddy Current Signal Converter | Signal conditioning for compatible Epro sensors |
Key Advantages
- Non-contact measurement of conductive rotating machine targets
- 8 mm sensing format for rotating machinery applications
- Suitable for shaft displacement and position monitoring
- Supports radial and axial movement measurement
- Applicable to eccentricity and vibration-related monitoring
- Works with compatible Epro signal-conditioning electronics
- Suitable for machinery monitoring and protection systems
- Practical for replacement and maintenance of compatible PR6423 installations
Technical FAQs
What does the Epro PR6423/011-110-CN detect?
The sensor detects changes in the distance between its sensing tip and a conductive target. In rotating machinery applications, this measurement can be used for shaft displacement, position, eccentricity, or vibration-related monitoring.
Why is eddy-current measurement suitable for rotating shafts?
The method detects the conductive target without physical contact. The probe can therefore remain stationary while the shaft rotates, avoiding mechanical contact between the sensor and the monitored surface.
Does the PR6423/011-110-CN require a signal-conditioning device?
The probe is normally used as part of a complete measurement chain with compatible signal-conditioning electronics. The downstream electronics processes the probe response before it is delivered to the machinery monitoring or protection system.
What should be checked when replacing this sensor?
Check the sensor model, associated signal-conditioning electronics, cable arrangement, mounting position, probe-to-target gap, alignment, and monitoring input. Matching the replacement probe to the existing measurement chain is important for obtaining the expected measurement.