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- PR6423/002-001
- 8mm Eddy Current Sensor
- Germany
- 8 mm
- 0.1 kg
- Xiamen, China
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Product Overview
The Epro PR6423/002-001 8mm Eddy Current Sensor is a non-contact sensor for monitoring the relative position and movement of conductive components in rotating machinery. It belongs to the Epro PR6423 family and is suitable for applications where shaft displacement or movement needs to be monitored without physical contact.
The sensor detects changes in the electromagnetic interaction between its sensing tip and a conductive target. When the distance between the probe and the target changes, the resulting electrical signal changes accordingly.
This operating principle makes the PR6423/002-001 suitable for machinery monitoring applications involving turbines, compressors, pumps, generators, and other rotating equipment.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Epro |
| Model | PR6423/002-001 |
| Product Type | Eddy Current Sensor |
| Sensor Series | PR6423 |
| Sensor Head Diameter | 8 mm |
| Measurement Method | Eddy Current / Non-Contact |
| Typical Application | Rotating Machinery Monitoring |
| Weight | 0.1 kg |
Main Features
- Epro PR6423 series eddy current sensor
- 8 mm sensor head
- Non-contact sensing principle
- Suitable for conductive metal targets
- Detects changes in the distance between probe and target
- Suitable for rotating machinery
- Supports shaft displacement and position monitoring
- Suitable for continuous machinery monitoring
- Can be connected to compatible signal-conditioning equipment
- Useful for machinery condition-monitoring applications
Working Principle
The PR6423/002-001 operates through the eddy current measurement principle.
The sensor generates an electromagnetic field around its sensing tip. When the tip is positioned close to a conductive metal target, such as a rotating shaft, eddy currents are induced in the target surface.
The interaction between the electromagnetic field and the target changes as the probe-to-target distance changes.
The measurement path can be represented as:
Conductive Target → Eddy Current Sensor → Electrical Signal → Signal Conditioning → Monitoring System
When the shaft moves toward or away from the probe, the sensor output changes accordingly. The associated electronics can then process this signal for machinery monitoring.
Because the probe does not physically contact the shaft, the sensor can continuously monitor a rotating component without creating mechanical friction at the sensing point.
Shaft Monitoring Applications
The PR6423/002-001 can be used when changes in rotating shaft position need to be detected.
Typical applications include:
- Radial shaft movement
- Axial shaft position
- Rotor displacement
- Shaft-to-probe gap monitoring
- Machinery vibration-related movement
- Rotating component position monitoring
The actual measurement configuration depends on the sensor installation, target characteristics, signal-conditioning equipment, and monitoring system.
Industrial Applications
| Application | Typical Monitoring Function |
|---|---|
| Steam Turbines | Rotor and shaft movement |
| Gas Turbines | Shaft displacement monitoring |
| Compressors | Rotor position monitoring |
| Pumps | Shaft movement detection |
| Generators | Rotor displacement |
| Expanders | Shaft position monitoring |
| Turbo Machinery | Continuous condition monitoring |
| Industrial Rotating Equipment | Non-contact displacement measurement |
The sensor is particularly useful in machinery where continuous measurement is required while the shaft remains in operation.
Installation and Maintenance
Proper installation of the sensor is important because the measurement depends on the relationship between the sensing tip and the conductive target.
Before commissioning, check:
- Probe mounting position
- Probe-to-target gap
- Conductive target material
- Shaft surface condition
- Cable routing
- Connector condition
- Signal-conditioning equipment
- Monitoring-system input
The probe should be mounted securely so that it does not move independently during machine operation. Any movement of the sensor itself can appear as shaft displacement.
During maintenance, inspect the sensor tip, cable, connectors, and mounting hardware. If the output signal becomes unstable, check the probe gap and mechanical mounting before investigating the associated electronics.
Related Components
| Component | Function |
|---|---|
| Eddy Current Signal Converter | Processes the sensor signal |
| Probe Cable | Transfers the sensor signal |
| Machinery Monitoring System | Evaluates the measurement |
| Monitoring Rack | Provides signal processing and protection |
| Shaft / Rotor | Provides the conductive target |
| Sensor Mounting Hardware | Maintains probe position |
| Alarm System | Provides configured warning functions |
The PR6423/002-001 normally forms part of a complete machinery-monitoring channel rather than operating as an isolated component.
Recommended Related Models
| Model | Product Type | Main Function | Typical Application |
|---|---|---|---|
| Epro PR6423/002-001 | 8mm Eddy Current Sensor | Non-contact displacement sensing | Rotating machinery |
| Epro PR6423/000-141 | 8mm Eddy Current Sensor | Proximity and displacement measurement | Rotating equipment |
| Epro PR6423/001-010 | 8mm Eddy Current Sensor | Shaft displacement sensing | Machinery monitoring |
| Epro PR6423/001-011-CN+CON021 | Sensor + Signal Converter | Displacement measurement and signal conversion | Rotating machinery |
| Epro PR6423/001-000+CON021 | Sensor + Signal Converter | Non-contact displacement measurement | Machinery monitoring |
| Epro CON021 | Eddy Current Signal Converter | Probe signal conditioning | Eddy current systems |
When selecting a replacement, the sensor, converter, cable, mounting arrangement, and monitoring-system input should be checked as a complete measurement channel.
Key Advantages
- Non-contact eddy current measurement
- Suitable for conductive rotating targets
- 8 mm sensor head
- Supports shaft displacement monitoring
- Suitable for continuous machinery monitoring
- No physical contact with the rotating shaft
- Useful for turbines, compressors, pumps, and generators
- Can be integrated with compatible machinery-monitoring electronics
- Suitable for condition-monitoring applications
Technical FAQs
What is the Epro PR6423/002-001 used for?
The PR6423/002-001 is an eddy current sensor used for non-contact monitoring of the position or movement of conductive components, particularly rotating shafts.
What does the 8 mm specification refer to?
The 8 mm specification refers specifically to the sensor head diameter. It describes the physical diameter of the sensing head and does not indicate the sensor’s measurement range.
Does the PR6423/002-001 contact the rotating shaft?
No. It uses an eddy current sensing principle, allowing the probe to monitor the conductive shaft without physically touching it.
What can cause an abnormal sensor signal?
An incorrect probe gap, unstable mounting, damaged cable, poor connector contact, target-surface problems, signal-conditioning faults, or monitoring-system issues can all affect the measurement. The complete sensing chain should be checked during troubleshooting.