Product Overview

The Epro PR6424/000-121+CON031 16mm Eddy Current Sensor+Eddy Current Signal Converter combines a PR6424 series eddy current sensor with a CON031 signal converter for non-contact rotating machinery measurement. The sensor detects changes in the distance between the probe and a conductive target, while the converter conditions the sensor signal for the connected monitoring electronics.

This combination is intended for measurement points where shaft displacement, shaft position, or other mechanical movement must be monitored without contacting the rotating component. It can be used on steam turbines, gas turbines, compressors, pumps, generators, and other rotating equipment.

The sensor and converter form a complete measurement channel from the machinery shaft to the monitoring system. The conditioned signal can be evaluated for machinery condition monitoring, alarm functions, and protective actions.

Technical Specifications

Product Features

• 16 mm eddy current sensor for non-contact rotating machinery measurement.
• CON031 Eddy Current Signal Converter for conditioning the sensor output.
• Suitable for shaft displacement and position monitoring.
• Measures changes in the distance to a conductive target without physical contact.
• Suitable for integration into machinery condition monitoring and protection systems.
• Applicable to turbines, compressors, pumps, generators, and other rotating equipment.
• Combines sensing and signal-conditioning functions into a dedicated measurement channel.

Working Principle

The PR6424/000-121 sensor generates an electromagnetic field at the probe tip. When positioned near a conductive target, the electrical response of the sensing circuit changes according to the distance between the sensor and target.

Movement of the monitored shaft changes this measurement gap. The resulting sensor signal is transmitted to the CON031 signal converter, where it is conditioned for use by the downstream monitoring electronics.

A typical measurement path is:

Rotating Shaft → PR6424/000-121 Sensor → CON031 Signal Converter → Machinery Monitoring System → Alarm / Protection

Stable mechanical mounting and correct probe positioning are essential because changes in the measurement gap directly affect the sensor signal.

Role in a Rotating Machinery Control Architecture

Industrial Applications

Installation and Maintenance

1. Install the PR6424/000-121 sensor with the probe tip facing the intended conductive target.
2. Maintain the required probe-to-target relationship for the selected measurement arrangement.
3. Secure the sensor mounting position to prevent movement caused by machinery vibration.
4. Install the CON031 in a suitable location protected from excessive mechanical stress.
5. Route sensor wiring away from strong electromagnetic interference sources where practical.
6. Avoid excessive bending, pulling, or mechanical stress on the sensor cable.
7. Verify connections between the sensor, CON031, and monitoring electronics before commissioning.
8. Inspect the probe tip periodically for contamination or physical damage.
9. Check the probe position if the measurement signal changes unexpectedly.
10. Inspect cables, terminals, and connectors when intermittent or unstable signals occur.
11. Compare unusual measurement trends with actual machinery operating conditions before replacing components.
12. Verify the complete sensor and converter measurement channel after maintenance before returning the equipment to normal operation.

Related Components

Recommended Related Models

Key Advantages

• Combined eddy current sensor and signal converter configuration.
• Non-contact measurement for rotating machinery.
• 16 mm sensor head configuration.
• Suitable for shaft displacement and position monitoring.
• Supports integration with machinery monitoring and protection systems.
• Applicable to continuous monitoring of critical rotating equipment.

Technical FAQs

What is the function of the Epro PR6424/000-121+CON031 combination?

The combination provides a non-contact measurement channel for detecting displacement or position changes of a conductive machinery target and conditioning the resulting signal for monitoring electronics.

What does the CON031 signal converter do?

The CON031 receives the eddy current sensor signal and conditions it for use by the associated machinery monitoring system.

Where can the PR6424/000-121+CON031 be used?

It can be applied to rotating machinery such as steam turbines, gas turbines, compressors, pumps, generators, gearboxes, and turboexpanders where shaft movement needs to be monitored.

What should be checked if the measurement signal becomes unstable?

Check the sensor mounting, probe-to-target position, cable connections, CON031 connections, and monitoring electronics. The actual machinery operating condition should also be reviewed to determine whether the signal variation is caused by mechanical movement or an instrumentation issue.