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- Epro
- PR6423/010-131+CON031
- 8mm Eddy Current Sensor + Eddy Current Signal Converter
- Germany
- 8 mm
- 0.22 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Epro PR6423/010-131+CON031 8mm Eddy Current Sensor+Eddy Current Signal Converter is a combined eddy-current displacement measurement solution used for non-contact monitoring of rotating machinery. The PR6423/010-131 sensor detects changes in the distance between the probe tip and a conductive machine target, while the CON031 signal converter processes the probe signal for connection to the machinery monitoring system.
The PR6423 sensor is typically installed close to a rotating shaft, thrust collar, or other conductive target where direct mechanical contact would be undesirable. Changes in the target-to-probe gap are converted into an electrical measurement representing shaft position or movement.
The CON031 forms the interface between the sensor and the monitoring or protection electronics. The complete arrangement is therefore more than a standalone proximity probe: the sensor performs the physical measurement and the signal converter conditions that measurement for the downstream monitoring system.
This configuration is suitable for machinery protection and condition monitoring applications where shaft displacement, vibration, or positional changes need to be continuously evaluated without contacting the moving machine element.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Eddy Current Sensor + Eddy Current Signal Converter |
| Product Series | PR6423 Series |
| Sensor Model | PR6423/010-131 |
| Signal Converter | CON031 |
| Sensor Type | Eddy Current Displacement Sensor |
| Measurement Method | Non-Contacting Eddy Current Measurement |
| Sensor Head Diameter | 8 mm |
| Application | Rotating Machinery Monitoring |
| Weight | 0.22 kg |
Product Features
- Combines an 8 mm eddy current sensor with a compatible signal converter.
- Provides non-contact measurement of conductive machine targets.
- Suitable for monitoring shaft movement and displacement.
- Allows the probe to operate without mechanical contact with the rotating component.
- Converts small changes in probe-to-target distance into an electrical measurement.
- CON031 provides the signal interface between the sensor and monitoring electronics.
- Suitable for continuous machinery condition monitoring.
- Can be integrated into machinery protection and vibration monitoring systems.
- Applicable to high-speed rotating equipment where direct-contact sensors are unsuitable.
- Useful for replacement and maintenance of existing Epro machinery monitoring installations.
Working Principle
The PR6423/010-131 uses an eddy-current measurement principle. The sensor generates an electromagnetic field at its sensing tip. When the probe is positioned near a conductive shaft or target, the target affects this field according to the distance between the two surfaces.
As the shaft moves relative to the probe, the electrical characteristics of the sensor circuit change. The resulting signal is passed to the CON031 Eddy Current Signal Converter, which conditions the sensor output into a form suitable for the connected monitoring or protection electronics.
Conductive Machine Target → PR6423/010-131 Sensor → CON031 Signal Converter → Machinery Monitoring System
The system can therefore detect dynamic shaft movement as well as changes in relative position. Correct probe installation and gap adjustment are essential because the measured signal depends directly on the relationship between the sensor and the machine target.
Role in a Machinery Monitoring Architecture
The PR6423/010-131+CON031 acts as the front-end measurement section of a rotating machinery monitoring loop.
Rotating Shaft → PR6423/010-131 → CON031 → Monitoring / Protection System → Alarm or Trip Logic
| System Element | Function |
|---|---|
| Rotating Shaft / Target | Provides the conductive machine surface being monitored |
| PR6423/010-131 | Detects changes in the probe-to-target distance |
| CON031 | Conditions and converts the sensor signal |
| Machinery Monitor | Processes the measurement and evaluates machine condition |
| Protection System | Generates alarms or shutdown commands when limits are exceeded |
| Control System | Uses available machinery information for operating decisions |
| Operator Interface | Displays vibration, position, alarm, and machine status information |
Industrial Applications
| Application | Typical Use |
|---|---|
| Steam Turbines | Monitors shaft displacement and rotating-element movement |
| Gas Turbines | Provides non-contact shaft measurement for machinery protection |
| Turbo Compressors | Monitors shaft position and dynamic movement |
| Centrifugal Compressors | Supports continuous rotating-shaft condition monitoring |
| Centrifugal Pumps | Detects shaft movement and abnormal mechanical behavior |
| Generators | Monitors rotor-related displacement and vibration conditions |
| Large Electric Motors | Provides shaft position or movement feedback |
| Industrial Blowers | Supports non-contact rotating machinery monitoring |
| Process Machinery | Interfaces rotating equipment measurements with protection systems |
Installation and Maintenance
- Verify that the PR6423/010-131 sensor and CON031 converter are the correct matched components for the monitoring system.
- Confirm the sensor mounting location and target material before installation.
- Position the probe so that it faces the conductive machine target correctly.
- Establish the required probe-to-target gap according to the applicable installation procedure.
- Keep the probe cable away from high-current power cables and strong sources of electromagnetic interference.
- Secure the cable to prevent movement caused by machine vibration.
- Check the sensor connection and CON031 connection for proper seating.
- Inspect the probe tip for contamination, mechanical damage, or signs of contact with the rotating target.
- Verify converter power and monitoring-system input conditions before commissioning.
- Check the sensor output against the expected machine position or vibration condition.
- During maintenance, inspect the probe mounting hardware and cable routing for loosening or mechanical stress.
- If the monitoring value becomes unstable, inspect the probe gap, target surface, cable connections, and signal converter before replacing the sensor.
- If the signal is completely absent, check the complete path from the sensor through the CON031 to the monitoring input.
- After sensor replacement, verify the measurement signal and alarm thresholds before returning the machinery protection loop to normal operation.
Probe installation has a direct effect on measurement quality. An incorrect gap, damaged target surface, poor cable routing, or loose connection can produce readings that appear to be sensor failures even when the probe itself is functional.
Related Components
| Component | Function |
|---|---|
| Epro PR6423 Series Probe | Provides non-contact eddy-current measurement |
| CON031 Signal Converter | Conditions the eddy-current sensor signal |
| Machinery Monitoring System | Processes the displacement or vibration measurement |
| Proximity Probe Mount | Positions the sensor relative to the machine target |
| Probe Extension Cable | Connects the sensor to the associated electronics where required |
| Rotating Shaft | Provides the conductive measurement target |
| Vibration Monitoring System | Evaluates dynamic machine movement |
| Machinery Protection System | Generates alarm and trip functions |
| Monitoring Cabinet | Houses associated monitoring electronics |
| Grounding System | Helps maintain proper signal reference and reduce interference |
Recommended Related Models
| Model | Product Family / Type | Typical Application |
|---|---|---|
| PR6423/010-131 | Epro PR6423 Series | 8 mm eddy current displacement measurement |
| PR6423 Series | Epro Eddy Current Sensor | Rotating machinery monitoring |
| CON031 | Epro Signal Converter | Eddy current sensor signal conditioning |
| PR6424 Series | Epro Eddy Current Sensor | Larger-target displacement measurement |
| PR6422 Series | Epro Eddy Current Sensor | Non-contact machinery measurement |
| PR6421 Series | Epro Eddy Current Sensor | Shaft displacement monitoring |
| PR9268 Series | Epro Vibration Sensor | Machinery vibration measurement |
| MMS 6000 | Epro Machinery Monitoring System | Machinery protection and condition monitoring |
Key Advantages
- Non-contact measurement: Monitors conductive machine targets without physical contact.
- Integrated measurement chain: Combines the PR6423 sensor with the CON031 signal converter.
- Suitable for rotating machinery: Supports continuous shaft movement and displacement monitoring.
- Compact sensing arrangement: The 8 mm sensor head is suitable for applications with limited probe installation space.
- Protection-system integration: The converted signal can be processed by downstream machinery monitoring electronics.
- Maintenance-friendly architecture: Sensor, converter, cabling, and monitoring stages can be checked separately during troubleshooting.
- Broad machinery use: Suitable for turbines, compressors, pumps, motors, generators, and other rotating equipment.
Technical FAQs
What does the PR6423/010-131 sensor actually measure?
The sensor measures the relative distance between its sensing tip and a conductive machine target. In rotating machinery applications, this can be used to monitor shaft displacement, relative movement, or vibration-related changes in the probe gap.
Why is the CON031 required in this configuration?
The PR6423/010-131 is the sensing element, while the CON031 provides the associated signal-conditioning and interface function. The converter prepares the sensor signal for the downstream machinery monitoring or protection electronics.
Can the PR6423/010-131 be installed directly against a rotating shaft?
No. Eddy-current measurement is non-contact. The probe must be installed with an appropriate operating gap from the conductive target. Direct contact with the rotating shaft can damage the probe and compromise the measurement.
What should be checked if the monitored shaft signal becomes unstable?
Check the probe-to-target gap first, followed by probe mounting, target surface condition, cable routing, electrical connections, and the CON031 signal path. If the mechanical installation is correct, compare the converter output with the expected machine condition to determine whether the fault is in the sensor or downstream electronics.