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- PR6424/000-130
- 16mm Eddy Current Sensor
- Germany
- 16 mm
- 0.2 kg
- Xiamen, China
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Product Overview
The Epro PR6424/000-130 16mm Eddy Current Sensor is a non-contact displacement and position sensor used in rotating machinery monitoring systems. It works with an appropriate Epro signal converter to detect changes in the distance between the probe tip and a conductive machine target, making it suitable for applications where direct mechanical contact would introduce wear or measurement errors.
In machinery such as steam turbines, compressors, pumps, and generators, the sensor can be positioned close to a rotating shaft or other conductive target. Changes in the target position alter the probe’s electromagnetic field and are converted into an electrical measurement by the associated signal conditioning electronics.
The PR6424/000-130 is particularly useful for monitoring shaft-related parameters where accurate proximity information is needed. Depending on the monitoring arrangement, the measured displacement can be used to evaluate shaft position, vibration-related movement, or other mechanical changes.
As part of a complete Epro eddy-current measurement chain, the probe works together with the corresponding converter and monitoring system. Proper probe installation, target geometry, cable routing, and sensor gap are therefore important for obtaining consistent measurements.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Epro |
| Model / Part Number | PR6424/000-130 |
| Product Type | 16mm Eddy Current Sensor |
| Series | PR6424 |
| Measurement Principle | Eddy current / non-contact displacement measurement |
| Application | Rotating machinery shaft displacement and position monitoring |
| Sensor Head Diameter | 16 mm |
| Weight | 0.2 kg |
Product Features
- Uses non-contact eddy-current sensing for conductive machine targets.
- Suitable for rotating machinery condition monitoring applications.
- Supports measurement of shaft-related displacement and position.
- Designed for use as part of an Epro proximity measurement system.
- Works with associated signal conditioning and monitoring electronics.
- Provides a practical sensing method where mechanical contact with the monitored shaft is undesirable.
- Suitable for machinery protection and diagnostic systems requiring proximity measurements.
Working Principle
The PR6424/000-130 operates by generating an electromagnetic field at the sensor tip and detecting changes caused by a nearby conductive target. In rotating machinery applications, the target is commonly a shaft or another suitable metallic surface.
A simplified measurement path is:
Rotating Shaft / Target → PR6424/000-130 Sensor → Signal Converter → Monitoring System → Protection / Control System
As the distance between the sensor and target changes, the electrical characteristics of the sensor circuit also change. The associated converter conditions this information into a usable measurement signal for the monitoring system.
For shaft monitoring, maintaining the correct probe-to-target relationship is critical. Excessive gap, unsuitable target geometry, mechanical movement of the probe, or incorrect installation can affect the measured signal and may lead to inaccurate machinery condition information.
Role in a Machinery Protection and Monitoring Architecture
The PR6424/000-130 forms the sensing element at the front end of an eddy-current monitoring chain:
Machine Shaft → PR6424/000-130 → Epro Signal Converter → Monitoring / Protection System → Control Room
| System Element | Function |
|---|---|
| Rotating Shaft | Provides the conductive target whose movement is being monitored |
| PR6424/000-130 | Detects changes in the distance to the target without physical contact |
| Signal Converter | Conditions the probe signal and converts it into a usable measurement |
| Monitoring System | Processes and displays machinery condition information |
| Protection System | Can initiate configured alarms or protective actions when monitored values exceed defined limits |
| Control / DCS System | Uses available machinery information for supervision and process control |
The probe itself is only one part of the measurement chain. Sensor installation and converter compatibility must be considered together when configuring a complete monitoring channel.
Industrial Applications
| Application | Typical Use |
|---|---|
| Steam Turbines | Monitors shaft movement and proximity-related mechanical conditions |
| Gas Turbines | Provides non-contact sensing for rotating machinery monitoring |
| Compressors | Supports shaft displacement and condition monitoring |
| Pumps | Detects changes in rotating shaft position where proximity measurement is required |
| Generators | Used in machinery monitoring arrangements involving rotating shafts |
| Industrial Machinery Protection | Supplies proximity information to monitoring and protection equipment |
Installation and Maintenance
- Verify the sensor model
Confirm that the PR6424/000-130 matches the intended monitoring channel and associated signal converter. - Check the target material
Make sure the monitored target is suitable for eddy-current measurement and has the required surface characteristics. - Set the correct probe position
Install the sensor according to the required probe-to-target gap for the monitoring system. - Secure the sensor mechanically
Prevent movement of the probe caused by vibration, thermal expansion, or mechanical loading. - Inspect the sensing surface
Keep the probe tip free from contamination, deposits, or mechanical damage. - Check the probe cable
Inspect the cable for cuts, crushing, excessive bending, or other physical damage. - Avoid unnecessary cable stress
Route the sensor cable so that vibration and movement do not place continuous mechanical stress on the connection. - Verify converter compatibility
Confirm that the associated signal conditioning electronics are suitable for the PR6424 sensor configuration. - Check the measurement signal
Compare the sensor output with expected operating conditions during commissioning or troubleshooting. - Investigate abnormal readings systematically
If the signal changes unexpectedly, inspect probe position, target condition, wiring, converter operation, and mechanical behavior before replacing the sensor. - Inspect during planned machinery maintenance
Check the probe mounting, cable condition, and sensing area whenever the associated rotating equipment is serviced. - Verify the monitoring channel after replacement
Following sensor replacement, confirm that the complete measurement chain produces the expected signal before returning the machinery to normal operation.
Compatible System Components
| Component | Role in the System |
|---|---|
| Epro Signal Converter | Conditions the eddy-current sensor signal |
| Epro Machinery Monitoring System | Processes and displays sensor measurements |
| Machinery Protection System | Uses monitored values for configured alarm and protection functions |
| Shaft / Conductive Target | Provides the measurement target for the eddy-current sensor |
| Sensor Extension / Connection Components | Provides the required physical connection between sensor and signal conditioning equipment |
| DCS / Control System | Receives available machinery condition information for plant supervision |
Recommended Related Models
| Model | Product Type | Typical Relationship |
|---|---|---|
| Epro PR6424/000-130 | 16mm Eddy Current Sensor | Specified sensor model |
| Epro PR6423 Series | Eddy Current Sensor | Related proximity sensing family for machinery monitoring |
| Epro PR6422 Series | Eddy Current Sensor | Related non-contact displacement sensing family |
| Epro CON011 / CON021 Series | Signal Converter | Associated type of signal conditioning hardware for Epro proximity sensors |
| Epro MMS 6000 Series | Machinery Monitoring System | Related monitoring platform for machinery condition signals |
Key Advantages
- Provides non-contact measurement for conductive rotating-machine targets.
- Suitable for shaft displacement and proximity monitoring.
- Avoids mechanical contact between the sensor and monitored target.
- Can be integrated into a complete machinery monitoring channel.
- Useful for turbine, compressor, pump, and generator applications.
- Supports continuous monitoring arrangements where shaft movement is a critical operating parameter.
Technical FAQs
What does the Epro PR6424/000-130 measure?
The sensor detects changes in the distance between its sensing tip and a conductive target. In rotating machinery applications, this information can be used to monitor shaft-related displacement or position.
Does the PR6424/000-130 work as a standalone monitoring device?
No. The sensor forms the sensing portion of a complete measurement channel. It normally works with appropriate signal conditioning and monitoring electronics that process the sensor signal.
Why is probe-to-target spacing important?
The eddy-current measurement depends on the electromagnetic interaction between the probe and conductive target. An incorrect installation gap can change the sensor output and affect the accuracy of the resulting machinery measurement.
What should be checked if the sensor signal becomes unstable?
Inspect the probe mounting and position first, followed by the sensing surface, cable, connections, associated converter, and monitored machine condition. Mechanical movement of the probe or changes in the target can also produce abnormal measurements.