Product Overview

The Epro PR6424/001-101 is a 16 mm eddy current sensor used for non-contact measurement of relative movement in rotating machinery. As part of the EPRO PR6424 sensor family, it serves as the sensing element in machinery monitoring and protection arrangements where continuous observation of shaft-related movement is required.

The sensor works with a conductive metallic target, typically a suitable surface on a rotating machine component. Instead of physically contacting the target, the probe detects changes in the electromagnetic interaction between the sensing element and the target. The resulting sensor response is then handled by compatible EPRO measuring electronics.

In turbine, compressor, generator, and other rotating equipment applications, the PR6424/001-101 can be integrated into a complete eddy current measurement chain. Its function remains focused on sensing at the machine interface rather than performing independent monitoring logic or control functions.

Technical Specifications

Product Features

• Uses eddy current technology for non-contact sensing of conductive machine targets.
• Suitable for shaft position and relative movement monitoring applications.
• Allows measurements to be made without physical contact with the rotating component.
• Supports machinery monitoring and protection arrangements.
• Can be integrated with compatible EPRO measuring electronics.
• Suitable for rotating equipment such as turbines, compressors, generators, and pumps.
• Provides a dedicated sensing point within a complete machinery measurement chain.
• Supports continuous observation of shaft-related movement.
• Suitable for established industrial condition-monitoring installations.

Working Principle

The PR6424/001-101 operates by generating an electromagnetic field around its sensing area. When the probe is positioned near a conductive metallic target, eddy currents are induced in the target material.

A change in the distance or relative position between the sensor and the target changes the electrical response of the sensing circuit. Compatible measuring electronics detect and process this response to obtain the corresponding machinery measurement.

PR6424/001-101 → Conductive shaft / target → Eddy current interaction → Measuring electronics → Machinery monitoring system

The non-contact arrangement means that the probe does not physically touch the rotating shaft during normal measurement. This avoids direct mechanical contact at the sensing point and allows the sensor to monitor relative movement while the machine is operating.

The sensor should be considered one element of the overall measurement chain. Probe installation, target condition, cable connections, measuring electronics, and monitoring configuration all contribute to the final measurement.

Role in an EPRO Rotating Machinery Monitoring Architecture

The PR6424/001-101 occupies the sensing layer of an EPRO eddy current measurement architecture. It detects changes at the machine interface and supplies the corresponding sensor response to compatible measuring electronics.

Industrial Applications

Installation and Maintenance

1. Confirm that the PR6424/001-101 is compatible with the intended EPRO measuring electronics and monitoring arrangement.
2. Review the applicable machinery drawings and probe installation documentation before mounting the sensor.
3. Isolate the relevant equipment and follow the plant’s mechanical and electrical safety procedures before installation.
4. Select a mounting location that establishes the required relationship between the probe and conductive target.
5. Clean the sensing area and remove contamination that could interfere with proper installation.
6. Inspect the sensor body, sensing end, and cable connection for visible damage before installation.
7. Route the sensor cable away from excessive tension, sharp edges, and unnecessary mechanical movement.
8. Secure the probe firmly so that operating vibration does not unintentionally change its installed position.
9. Verify the connection between the sensor and compatible measuring electronics before energizing the monitoring circuit.
10. Check the sensor response during commissioning and confirm that it changes appropriately with the monitored machine movement.
11. If readings become unstable or abnormal, inspect the probe position, target surface, cable condition, and measuring electronics.
12. Record the sensor model and installation location for future machinery maintenance and condition-monitoring activities.

Related Components

Recommended Related Models

Key Advantages

• Provides non-contact sensing for rotating machinery.
• Uses eddy current measurement for conductive metallic targets.
• Supports shaft position and relative movement monitoring.
• Avoids physical contact between the probe and monitored rotating component.
• Integrates into compatible EPRO measuring and monitoring architectures.
• Suitable for turbine, compressor, generator, pump, and other rotating equipment applications.

Technical FAQs

What is the PR6424/001-101 used for?

The PR6424/001-101 is used for non-contact eddy current measurement of relative movement between the sensor and a conductive metallic target. In rotating machinery, this can support shaft position or displacement-related monitoring.

What type of target is required for eddy current sensing?

The measurement principle requires a suitable conductive metallic target. In typical machinery applications, the monitored target may be a metallic shaft or another conductive machine surface appropriate for the measurement arrangement.

Can the PR6424/001-101 directly analyze machinery condition?

No. The sensor supplies the sensing response as part of a larger measurement chain. Compatible EPRO measuring electronics and monitoring equipment are responsible for processing and evaluating the resulting measurement.

What should be inspected if the measurement changes unexpectedly?

The probe mounting position, sensor-to-target relationship, target surface, cable connection, and associated measuring electronics should be checked systematically. Mechanical movement of the probe or changes in the monitored target can also affect the measured response.