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- PR6423/011-100+CON021
- 8mm Eddy Current Sensor + Eddy Current Signal Converter
- Germany
- 8 mm
- 0.22 kg
- Xiamen, China
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Product Overview
The Epro PR6423/011-100+CON021 8mm Eddy Current Sensor+Eddy Current Signal Converter combines an 8 mm eddy current sensor with a compatible signal-conditioning converter to form a measurement chain for rotating machinery. The sensor detects changes in the distance between its probe tip and a conductive machine target, while the converter conditions the resulting signal for use by monitoring and protection equipment.
The PR6423/011-100 is used as the sensing element positioned toward the machine shaft or another conductive target. Because the measurement is non-contact, the sensor can monitor rotating components without mechanical contact between the probe and the monitored surface.
The CON021 handles the interface between the probe and the downstream monitoring system. This arrangement is useful where shaft displacement, position, eccentricity, or vibration-related movement needs to be converted into an electrical signal suitable for machinery monitoring.
The complete combination is particularly relevant to turbine, compressor, pump, generator, and other rotating-equipment installations. During replacement work, the sensor and converter should be treated as a matched measurement chain, with the existing cable, mounting arrangement, target material, and monitoring input checked as part of commissioning.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Eddy Current Sensor + Eddy Current Signal Converter |
| Product Series | PR6423 Series |
| Sensor Model | PR6423/011-100 |
| Signal Converter | CON021 |
| 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 | 0.22 kg |
Product Features
- 8 mm eddy current sensing element for non-contact shaft measurement
- Combined sensor and signal-converter configuration
- Detects relative movement between a conductive target and probe
- Suitable for shaft displacement and position monitoring
- Applicable to eccentricity and vibration-related measurements
- Signal conditioning supports connection to downstream monitoring equipment
- Suitable for rotating machinery condition monitoring
- Useful for machinery protection and maintenance applications
- Appropriate for compatible Epro measurement installations
Working Principle
The PR6423/011-100 detects changes in the electromagnetic field caused by movement of a conductive target. The resulting sensor response is transferred to the CON021 for signal conditioning before reaching the machinery monitoring system.
Conductive Machine Target → PR6423/011-100 → CON021 → Machinery Monitoring / Protection System
The sensing process begins when the probe is positioned toward the rotating shaft. A change in the shaft-to-probe distance changes the eddy-current response at the sensor tip. The CON021 processes this response and supplies the conditioned measurement signal to the associated monitoring equipment.
Depending on the monitoring configuration, the measurement chain can be used for:
- Shaft radial displacement
- Shaft axial position
- Rotor eccentricity
- Shaft vibration
- Rotational movement
- Machinery protection measurements
The sensor itself does not mechanically follow the shaft. The measurement remains based on the electromagnetic interaction between the probe and the conductive target.
Role in a Rotating Machinery Monitoring Architecture
The combined sensor and converter form the front end of a machinery displacement or vibration measurement channel.
Rotating Shaft → PR6423/011-100 → CON021 → Machinery Monitor → Alarm / Protection
| System Element | Function |
|---|---|
| Rotating Shaft | Provides the conductive measurement target |
| PR6423/011-100 | Detects changes in target distance |
| CON021 | Conditions the eddy-current sensor signal |
| Machinery Monitor | Processes and displays 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 measurement |
| Turbo Compressors | Rotor displacement monitoring |
| 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 PR6423/011-100 and CON021 match the intended measurement system.
- Confirm the sensor and converter configuration before replacing an installed assembly.
- Check that the monitored shaft or target is suitable for eddy-current measurement.
- Install the probe securely at the specified measurement location.
- Maintain the appropriate probe-to-target gap for the measurement chain.
- Check probe alignment relative to the shaft surface.
- Inspect the probe mounting arrangement for looseness or mechanical movement.
- Connect the probe to the CON021 using the appropriate cable and connection arrangement.
- Keep the sensor wiring away from strong electrical interference where practical.
- Verify converter power and downstream signal connections before startup.
- Check the monitoring system for a valid measurement after installation.
- Compare the measured signal with expected shaft behavior during commissioning.
- Inspect the probe tip, cable, connectors, and mounting hardware during scheduled maintenance.
- When troubleshooting an abnormal signal, check the sensor, cable, converter, target, gap, and monitoring input as one complete signal chain.
A signal problem can originate at either the sensing or conditioning stage. Checking the complete path from the shaft target through the PR6423/011-100 and CON021 helps distinguish probe faults from wiring, converter, or monitoring-system problems.
Related Components
| Component | Function |
|---|---|
| Epro PR6423/011-100 | 8 mm eddy-current sensing element |
| CON021 | Eddy-current signal-conditioning converter |
| Sensor Cable | Connects the probe with the associated electronics |
| Machinery Monitor | Receives and processes the conditioned measurement |
| Vibration Monitoring System | Performs continuous machinery monitoring |
| Probe Mounting Hardware | Maintains probe position relative to the shaft |
| 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 |
|---|---|---|
| PR6423/011-100+CON021 | Eddy Current Sensor + Signal Converter | 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 | 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 |
| CON011 | Eddy Current Signal Converter | Signal conditioning for compatible PR642x sensors |
| CON031 | Eddy Current Signal Converter | Signal conditioning for compatible machinery sensors |
Key Advantages
- Combines an 8 mm eddy-current sensor with signal-conditioning electronics.
- Provides non-contact measurement of conductive rotating targets.
- Suitable for shaft displacement and position monitoring.
- Can support eccentricity and vibration-related measurements.
- Integrates the sensing and signal-conditioning stages into one measurement arrangement.
- Applicable to turbines, compressors, pumps, generators, and motors.
- Suitable for machinery condition monitoring and protection systems.
- Practical for replacement and maintenance of compatible Epro installations.
Technical FAQs
What is the function of the CON021 in this measurement combination?
The CON021 serves as the signal-conditioning stage between the PR6423/011-100 sensor and the downstream monitoring equipment. It processes the sensor response so that the measurement can be used by the associated machinery monitoring system.
Can the PR6423/011-100+CON021 measure a rotating shaft without physical contact?
Yes. The PR6423/011-100 uses eddy-current measurement, allowing the distance between the probe and a conductive shaft to be detected without the probe touching the rotating surface.
What types of machinery measurements can this combination support?
Depending on the overall monitoring configuration, the measurement chain can be used for shaft displacement, shaft position, eccentricity, vibration-related movement, and other rotating machinery protection measurements.
What should be checked before replacing the complete sensor and converter combination?
Verify the probe model, converter compatibility, cable arrangement, target material, mounting location, probe gap, electrical connections, and monitoring-system input. Matching the replacement components to the existing measurement chain is important for correct signal scaling and machine protection.