Product Overview

The Epro PR6423/10R-131-CN is an 8 mm eddy current sensor for non-contact measurement of shaft position and movement in rotating machinery. It detects changes in the relative distance between the probe and a conductive machine target without making physical contact with the rotating component.

The sensor can be installed near turbine shafts, compressor rotors, generator shafts, motor shafts, and other conductive targets where continuous observation of mechanical movement is required. Its non-contact sensing method makes it suitable for measurements where a conventional contact sensor would introduce mechanical wear or interfere with the moving equipment.

The -CN configuration forms part of the complete PR6423 part-number specification and should be matched with the intended installation, associated signal-conditioning equipment, and downstream monitoring system. The sensor itself represents the machine-side sensing element rather than the complete monitoring or protection system.

For maintenance work, the probe installation and the surrounding measurement chain should be considered together. Probe alignment, target condition, mounting stability, cabling, signal-conditioning equipment, and monitoring-input compatibility can all influence the resulting measurement.

Technical Specifications

Product Features

• 8 mm PR6423 Series eddy current sensor for non-contact measurement.
• Detects relative movement between the probe and a conductive rotating target.
• Suitable for shaft position, displacement, and vibration-related measurements.
• Part-number configuration identified by the -CN suffix.
• Can be integrated with compatible Epro signal-conditioning equipment.
• Suitable for turbines, compressors, generators, motors, pumps, and other rotating machinery.
• Useful for continuous machinery condition-monitoring installations.
• Suitable for replacement and maintenance of compatible PR6423 sensing channels.
• Requires appropriate probe positioning and compatibility with the associated measurement electronics.

Working Principle

The PR6423/10R-131-CN operates by generating an electromagnetic sensing field at the probe tip. When a conductive shaft or target moves relative to the sensor, the eddy current response changes according to the target-to-probe relationship.

The resulting sensor response is transferred through the associated signal-conditioning stage. Compatible monitoring electronics can then interpret the conditioned signal as information about shaft position, displacement, or vibration-related movement.

Conductive Shaft / Target → PR6423/10R-131-CN Sensor → Signal Conditioning → Machinery Monitoring System → Alarm / Protection

The probe does not independently perform machine protection or final signal analysis. Measurement accuracy depends on the complete installation, including probe alignment, target characteristics, mechanical mounting, cable condition, signal-conditioning equipment, and receiving monitoring input.

Role in an Epro Eddy Current Monitoring Architecture

The PR6423/10R-131-CN occupies the field sensing position within an Epro eddy current monitoring channel. It establishes the physical measurement point at the rotating machine, while downstream electronics provide signal conditioning and monitoring functions.

Rotating Shaft → PR6423/10R-131-CN → Signal Conditioner → Monitoring Input → Machinery Monitoring System → Alarm / Protection

The -CN designation should be treated as part of the complete sensor configuration when selecting a replacement. Compatibility should be confirmed across the sensor, signal-conditioning stage, cabling, and monitoring input.

Industrial Applications

Installation and Maintenance

1. Verify the complete PR6423/10R-131-CN part number before installation or replacement.
2. Confirm compatibility with the associated signal-conditioning equipment and receiving monitoring system.
3. Isolate the rotating machinery and follow the applicable site safety procedure before installing or servicing the probe.
4. Inspect the probe tip, housing, and accessible cable connection for contamination or physical damage.
5. Confirm that the mounting arrangement permits correct positioning relative to the conductive target.
6. Establish the required probe-to-target relationship according to the applicable Epro measurement-system requirements.
7. Check probe alignment and ensure that the mounting structure remains mechanically secure during machine operation.
8. Route the sensor cable to minimize mechanical stress, excessive bending, heat exposure, and avoidable electrical interference.
9. Verify all accessible sensor and signal-conditioning connections before energizing the measurement channel.
10. Check the sensor output after installation and compare the resulting measurement with expected machine operating conditions.
11. If abnormal readings occur, inspect probe position, target condition, cable integrity, signal conditioning, and monitoring input before replacing the sensor.
12. After replacement, perform a complete measurement-channel and machinery-monitoring functional test before returning the equipment to normal operation.

Compatible System Components

Recommended Related Models

Key Advantages

• Provides non-contact eddy current measurement for conductive rotating targets.
• 8 mm PR6423 configuration for compatible machinery monitoring installations.
• Suitable for shaft position, displacement, and vibration-related measurements.
• Can be integrated with compatible signal-conditioning and monitoring equipment.
• Applicable to turbines, compressors, generators, motors, pumps, and other rotating machinery.
• Suitable for maintenance and replacement of compatible PR6423 sensing channels.

Technical FAQs

What does the -CN suffix indicate for the PR6423/10R-131-CN?

The -CN suffix forms part of the sensor’s complete ordering configuration. It should be retained when selecting a replacement because the complete part number determines the intended sensor configuration and its compatibility with the associated measurement channel.

Does the PR6423/10R-131-CN require a separate signal-conditioning stage?

The sensor should be used with compatible signal-conditioning or interface electronics as part of the complete measurement channel. The exact downstream arrangement depends on the installed Epro monitoring architecture.

What mechanical conditions are most important during probe installation?

Probe alignment, mounting stability, target condition, and the probe-to-target relationship are critical. The installation should prevent unintended probe movement while maintaining the required sensing relationship with the conductive target.

How can a sensor fault be distinguished from a problem elsewhere in the measurement channel?

Compare the observed sensor behavior with the physical installation and downstream signal path. Check the probe position, target relationship, cable, signal-conditioning equipment, and monitoring input before concluding that the PR6423 sensor itself has failed.