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- PR6424/001-000
- 16mm Eddy Current Sensor
- Germany
- 16 mm
- 0.2 kg
- Xiamen, China
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Product Overview
The Epro PR6424/001-000 16mm Eddy Current Sensor is a non-contact proximity sensor used for monitoring the position and movement of conductive targets in rotating machinery. It is commonly applied where the condition of a shaft or other rotating component needs to be monitored without physically contacting the machine surface.
The sensor is installed near the monitored target and works as part of an eddy-current measurement channel. As the distance between the probe and conductive target changes, the sensor response changes accordingly. The associated signal-conditioning electronics then convert this information into a usable measurement for a machinery monitoring or protection system.
In turbine, compressor, pump, and generator applications, this type of sensor can be used where shaft movement, displacement, or proximity information is required. Its non-contact measurement principle avoids mechanical wear at the sensing point and allows the probe to operate continuously while the machine is running.
The PR6424/001-000 should be considered as one part of a complete monitoring channel. Probe positioning, target condition, cable integrity, signal conditioning, and the downstream monitoring input all affect the quality of the final measurement.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Epro |
| Model / Part Number | PR6424/001-000 |
| 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 technology to detect conductive targets.
- Suitable for rotating machinery proximity and displacement monitoring.
- Supports shaft-related position and movement measurements.
- Can be integrated with appropriate Epro signal-conditioning electronics.
- Suitable for continuous machinery monitoring applications.
- Useful in turbine, compressor, pump, generator, and other rotating equipment systems.
- Provides a practical sensing method where mechanical contact with the monitored target is undesirable.
Working Principle
The PR6424/001-000 generates an electromagnetic field at the sensing tip and detects changes caused by a nearby conductive target. When the target moves closer to or farther from the probe, the electrical response of the sensor changes.
A simplified measurement path is:
Rotating Shaft / Conductive Target → PR6424/001-000 Sensor → Signal Converter → Machinery Monitoring System → Protection / Control System
The signal converter conditions the sensor output before it is processed by the monitoring equipment. In a shaft-monitoring application, changes in the sensor signal can represent changes in the relative position between the probe and the rotating target.
Correct installation is essential because the measurement depends directly on the probe-to-target relationship. Probe movement, unsuitable target geometry, contamination, or cable problems can all affect the resulting measurement.
Role in a Machinery Protection and Monitoring Architecture
The PR6424/001-000 forms the sensing element at the front of a proximity monitoring channel:
Machine Shaft → PR6424/001-000 → Signal Converter → Monitoring / Protection System → Control Room
| System Element | Function |
|---|---|
| Rotating Shaft | Provides the conductive target whose movement is monitored |
| PR6424/001-000 | Detects changes in target distance without physical contact |
| Signal Converter | Conditions the probe signal for downstream processing |
| Machinery Monitoring System | Processes and displays the measured proximity information |
| Protection System | Uses configured measurement limits for alarms or protective functions |
| DCS / Control System | Provides plant-level monitoring and supervision |
The probe supplies the initial measurement information, while the converter and monitoring system complete the signal chain needed for practical machinery protection and condition monitoring.
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 position monitoring |
| Pumps | Provides proximity information for rotating shaft monitoring |
| Generators | Used in rotating equipment monitoring arrangements |
| Machinery Protection Systems | Supplies proximity measurements for condition monitoring and protection |
Installation and Maintenance
- Verify the sensor model
Confirm that the PR6424/001-000 is appropriate for the intended monitoring channel and signal-conditioning arrangement. - Check the conductive target
Make sure the monitored shaft or target surface is suitable for eddy-current measurement. - Set the correct probe position
Install the sensor at the required distance from the monitored target according to the monitoring system configuration. - Secure the probe firmly
Prevent mechanical movement of the sensor caused by vibration or equipment operation. - Inspect the sensing tip
Check for contamination, deposits, scratches, or other physical damage. - Inspect the sensor cable
Look for cuts, crushing, excessive bending, or other conditions that could affect signal integrity. - Verify signal-converter compatibility
Confirm that the connected signal-conditioning electronics are suitable for the installed PR6424 sensor. - Check cable routing
Keep the sensor cable properly supported and avoid unnecessary mechanical stress. - Verify the measurement signal
Compare the observed output with expected operating conditions during commissioning or maintenance. - Investigate abnormal readings systematically
Check probe position, target condition, wiring, converter operation, and machine behavior before replacing the sensor. - Inspect during planned machinery service
Check sensor mounting, cable condition, and the sensing area whenever the associated machine is serviced. - Perform a complete channel test
After sensor replacement or adjustment, verify the sensor, converter, and monitoring system together before returning the machine to normal operation.
Compatible System Components
| Component | Role in the System |
|---|---|
| Epro Signal Converters | Conditions the eddy-current sensor signal |
| Epro Machinery Monitoring Systems | Processes and displays proximity measurements |
| Machinery Protection Systems | Uses sensor measurements for configured alarms and protection functions |
| Rotating Machinery Shafts | Provides the conductive target for non-contact measurement |
| Sensor Connection Components | Provides the required connection between the probe and signal-conditioning electronics |
| DCS / Control Systems | Provides plant-level supervision of machinery condition information |
Recommended Related Models
| Model | Product Type | Typical Relationship |
|---|---|---|
| Epro PR6424/001-000 | 16mm Eddy Current Sensor | Specified sensor model |
| Epro PR6424/000-130 | 16mm Eddy Current Sensor | Related PR6424 sensor model |
| Epro PR6423 Series | Eddy Current Sensor | Related proximity sensing family |
| Epro PR6422 Series | Eddy Current Sensor | Related non-contact displacement sensing family |
| Epro CON021 Series | Eddy Current Signal Converter | Related signal-conditioning hardware |
Key Advantages
- Provides non-contact measurement of conductive machinery targets.
- Suitable for shaft displacement and proximity monitoring.
- Supports continuous monitoring of rotating equipment.
- Can be integrated with Epro signal-conditioning and monitoring equipment.
- Useful for turbine, compressor, pump, and generator applications.
- Avoids physical contact between the probe and monitored machine target.
Technical FAQs
What is the Epro PR6424/001-000 used for?
The PR6424/001-000 is an eddy-current proximity sensor used to detect changes in the distance between the sensor and a conductive target. In rotating machinery, it can be used for shaft position or displacement monitoring.
Does the PR6424/001-000 require a signal converter?
The sensor forms the sensing portion of a complete measurement channel and is normally used with appropriate signal-conditioning electronics before the measurement is connected to a monitoring system.
Why is the probe-to-target gap important?
Eddy-current measurement depends on the relationship between the probe and conductive target. An incorrect gap can alter the sensor response and affect the accuracy of the resulting machinery measurement.
What should be checked if the sensor output changes unexpectedly?
Inspect the probe position, mounting, target surface, cable connections, signal converter, and monitored machine condition. If the sensor has moved mechanically or the target condition has changed, the resulting signal can also change.