Product Overview

The Epro PR6424/000-130+CON021/914-080 16mm Eddy Current Sensor+Eddy Current Signal Converter is a combined proximity measurement assembly consisting of an eddy-current sensor and its associated signal converter. It is used to detect non-contact displacement or position changes of conductive targets in rotating machinery monitoring applications.

The PR6424/000-130 sensor is installed close to the monitored machine target, typically a rotating shaft or another conductive surface. The CON021/914-080 signal converter conditions the sensor signal so that the measured proximity information can be transferred to the downstream machinery monitoring system.

This sensor-and-converter arrangement is useful in machinery protection systems where the probe signal needs to be conditioned before reaching the monitoring electronics. Typical applications include turbines, compressors, pumps, generators, and other rotating equipment where shaft movement must be continuously observed.

For maintenance engineers, the complete assembly should be treated as a measurement channel rather than as two unrelated components. Sensor installation, probe positioning, cable connections, converter compatibility, and the downstream monitoring input all affect the final measurement.

Technical Specifications

Product Features

• Combines an Epro PR6424 eddy-current sensor with a CON021 signal converter.
• Provides non-contact sensing of conductive machinery targets.
• Suitable for shaft displacement and proximity measurement applications.
• Conditions the probe signal for connection to downstream monitoring equipment.
• Supports continuous rotating machinery condition monitoring.
• Suitable for machinery protection and diagnostic measurement systems.
• Simplifies deployment of the sensor and associated signal conditioning as a matched measurement assembly.

Working Principle

The PR6424/000-130 sensor generates an electromagnetic field near the monitored conductive target. Changes in the distance between the probe and target alter the sensor response. The resulting electrical signal is transferred to the CON021/914-080 signal converter for conditioning.

A simplified measurement path is:

Rotating Shaft / Conductive Target → PR6424/000-130 Sensor → CON021/914-080 Signal Converter → Machinery Monitoring System → Protection / Control System

The converter prepares the probe signal for use by the monitoring system. Depending on the configured monitoring architecture, the resulting measurement can be used to observe shaft position, displacement, or other mechanical movement represented by the proximity signal.

Correct probe installation remains critical even when the converter is functioning normally. Changes in the probe-to-target relationship, target surface condition, cable integrity, or mechanical mounting can produce changes in the measured signal.

Role in a Machinery Protection and Monitoring Architecture

The combined assembly occupies the sensing and signal-conditioning portion of the machinery monitoring chain:

Machine Shaft → PR6424/000-130 → CON021/914-080 → Monitoring System → Protection / Control System

Using the sensor and converter as a complete measurement channel helps maintain a defined signal path from the machine to the monitoring system.

Industrial Applications

Installation and Maintenance

1. Verify the complete assembly
   Confirm that the PR6424/000-130 sensor and CON021/914-080 converter correspond to the intended monitoring channel.
2. Check the monitored target
   Ensure that the target surface is suitable for eddy-current measurement and is appropriate for the application.
3. Set the probe position correctly
   Maintain the required probe-to-target relationship specified for the monitoring installation.
4. Secure the sensor mechanically
   Prevent probe movement caused by machine vibration or mechanical loading.
5. Inspect the probe tip
   Check the sensing surface for contamination, deposits, or physical damage.
6. Inspect the sensor cable
   Look for cuts, crushing, excessive bending, or damaged connections along the cable route.
7. Check converter connections
   Verify that the sensor and converter connections are secure and correctly identified.
8. Confirm monitoring-system compatibility
   Make sure the conditioned signal is connected to the appropriate monitoring channel.
9. Verify the measurement during commissioning
   Compare the observed signal with expected machine conditions before placing the channel into service.
10. Investigate unstable signals systematically
    Check probe position, target condition, cable integrity, converter operation, and mechanical behavior before replacing components.
11. Inspect the complete channel during maintenance
    Sensor mounting, cable routing, converter connections, and monitoring inputs should be checked together during planned service.
12. Perform a functional test after replacement
    Confirm that the sensor, converter, and monitoring system produce the expected measurement before returning the machine to normal operation.

Compatible System Components

Recommended Related Models

Key Advantages

• Combines proximity sensing and signal conditioning in one measurement arrangement.
• Provides non-contact monitoring of conductive rotating-machine targets.
• Suitable for shaft displacement and position measurement.
• Creates a defined signal path from the machine to the monitoring system.
• Supports continuous machinery condition monitoring.
• Suitable for turbine, compressor, pump, generator, and other rotating equipment applications.

Technical FAQs

What does the PR6424/000-130+CON021/914-080 assembly measure?

The assembly detects changes in the distance between the PR6424 sensor and a conductive machine target. In rotating machinery applications, the resulting measurement can be used to monitor shaft-related displacement or position.

What is the function of the CON021/914-080?

The CON021/914-080 serves as the signal-conditioning portion of the measurement channel. It processes the signal from the PR6424 sensor so that the resulting proximity information can be used by the downstream monitoring system.

Why must the sensor and converter be considered together?

The sensor generates the proximity measurement while the converter conditions that signal. A problem in either part can affect the complete measurement channel, so troubleshooting should consider the probe, converter, connections, and monitoring input as one signal path.

What should be checked when the measured signal is abnormal?

Check the probe-to-target relationship, sensor mounting, target surface, cable connections, converter operation, and monitored machine condition. Mechanical movement of the probe or changes in the target can also affect the measurement.