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The Epro PR6424/001-010 16mm Eddy Current Sensor is a non-contact proximity sensor used to monitor the relative position and movement of conductive targets in rotating machinery. It forms the sensing portion of a machinery monitoring channel where shaft movement needs to be detected without mechanical contact.
The sensor is installed close to the monitored machine surface, typically a rotating shaft or another suitable conductive target. Changes in the distance between the probe and target alter the sensor’s electromagnetic response, allowing the associated signal-conditioning electronics to convert the change into a usable measurement.
In practical machinery monitoring systems, the PR6424/001-010 can be used for applications involving shaft displacement, position, or other proximity-related measurements. Turbines, compressors, pumps, generators, and other rotating equipment can use this type of sensing arrangement as part of condition monitoring and machinery protection.
The sensor works together with the appropriate signal converter and monitoring electronics rather than acting as a complete monitoring device by itself. Probe installation, target condition, wiring, and signal-conditioning compatibility should therefore be considered as part of the complete measurement channel.
| Parameter | Specification |
|---|---|
| Manufacturer | Epro |
| Model / Part Number | PR6424/001-010 |
| 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 |
The PR6424/001-010 generates an electromagnetic field at its sensing tip. When a conductive target approaches or moves away from the probe, the interaction between the electromagnetic field and target changes. This change is reflected in the electrical response of the sensor.
A typical measurement path is:
Rotating Shaft / Conductive Target → PR6424/001-010 Sensor → Signal Converter → Machinery Monitoring System → Protection / Control System
The associated signal converter processes the probe output into a measurement suitable for the monitoring system. In a shaft-monitoring application, changes in the signal can correspond to changes in the relative position between the sensor and rotating target.
Stable mechanical installation is important because movement of the probe itself can be interpreted as a change in target position. Cable condition, target surface characteristics, and the complete signal-conditioning chain should also be considered when evaluating unusual readings.
The PR6424/001-010 operates at the front end of a proximity measurement channel:
Machine Shaft → PR6424/001-010 → Signal Converter → Monitoring / Protection System → Control Room
| System Element | Function |
|---|---|
| Rotating Shaft | Provides the conductive target for proximity measurement |
| PR6424/001-010 | Detects changes in the distance between the probe and target |
| Signal Converter | Conditions the sensor signal for downstream processing |
| Machinery Monitoring System | Processes and displays the resulting measurement |
| Protection System | Uses configured measurement limits for alarms and protection functions |
| DCS / Control System | Provides plant-level supervision and control information |
The sensor provides the initial proximity measurement, while the signal converter and monitoring equipment complete the channel used for machinery condition monitoring.
| Application | Typical Use |
|---|---|
| Steam Turbines | Monitors shaft movement and proximity-related mechanical conditions |
| Gas Turbines | Provides non-contact sensing for rotating machinery |
| Compressors | Supports shaft displacement and position monitoring |
| Pumps | Provides proximity information for rotating shaft condition monitoring |
| Generators | Used in rotating equipment monitoring arrangements |
| Machinery Protection | Supplies proximity measurements to monitoring and protection equipment |
| 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 proximity measurements for configured alarms and protection functions |
| Rotating Machinery Shafts | Provides the conductive target detected by the sensor |
| Sensor Connection Components | Provides the physical connection to signal-conditioning electronics |
| DCS / Control Systems | Provides plant-level supervision of machinery condition information |
| Model | Product Type | Typical Relationship |
|---|---|---|
| Epro PR6424/001-010 | 16mm Eddy Current Sensor | Specified sensor model |
| Epro PR6424/001-000 | 16mm Eddy Current Sensor | Related PR6424 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 CON021 Series | Eddy Current Signal Converter | Related signal-conditioning hardware |
The PR6424/001-010 is an eddy-current proximity sensor used to detect changes in the distance between the probe and a conductive target. It can be used for shaft position and displacement monitoring in rotating machinery.
No. The sensor provides the proximity measurement and normally operates with appropriate signal-conditioning and monitoring electronics to form a complete measurement channel.
The sensor output depends on the relative position between the probe and conductive target. Incorrect positioning or mechanical movement of the probe can affect the resulting measurement and may produce misleading machinery condition information.
Check the probe position, mechanical mounting, target surface, sensor cable, connections, associated signal converter, and machine condition. Troubleshooting the complete measurement path can help distinguish a sensor problem from a mechanical or signal-conditioning issue.