Product Overview

The Epro PR6423/014-030+CON021 combines an 8 mm eddy current sensor with an eddy current signal converter for non-contact measurement of conductive machine components. The combination is suited to rotating machinery applications where shaft position, displacement, or vibration-related movement needs to be detected and transferred into a usable monitoring signal.

The PR6423/014-030 serves as the sensing element installed close to the monitored conductive target. The CON021 signal converter handles the associated sensor signal, forming the electronic interface between the probe and the downstream machinery monitoring equipment.

This arrangement is useful on turbines, compressors, pumps, generators, and other machines where the sensing point is located at the mechanical equipment while signal-processing electronics are connected within the instrumentation or control system. It allows the sensor and signal-conditioning stages to work as one measurement channel.

For maintenance and commissioning, the complete sensor-and-converter combination should be treated as a measurement chain rather than as two independent components. Probe installation, target position, cabling, converter connections, and monitoring-channel configuration all affect the final measurement.

Technical Specifications

Product Features

• Combines an 8 mm PR6423 eddy current sensor with a CON021 signal converter.
• Supports non-contact measurement of conductive machine targets.
• Suitable for shaft displacement and proximity monitoring.
• Converts the sensor measurement into a form suitable for downstream monitoring equipment.
• Suitable for rotating machinery instrumentation.
• Can be integrated into machinery vibration and protection systems.
• Separates the physical sensing point from the downstream signal-processing stage.
• Applicable to turbines, compressors, pumps, generators, and similar rotating equipment.

Working Principle

The PR6423/014-030 detects changes in the distance between its sensing head and a conductive target using an eddy current measurement principle. When the target moves relative to the probe, the electrical response of the sensing circuit changes.

The resulting probe signal is passed to the CON021 signal converter, where the sensor information is conditioned for use by the associated monitoring equipment. The converter therefore forms the second stage of the measurement chain rather than directly detecting shaft movement itself.

Conductive Target / Rotating Shaft → PR6423/014-030 Sensor → CON021 Signal Converter → Machinery Monitoring System

For example, when a rotating shaft moves radially or axially relative to the installed probe, the probe-to-target relationship changes. The resulting measurement is processed through the converter and made available to the machinery monitoring system for displacement or vibration-related evaluation.

Role in a Rotating Machinery Monitoring Architecture

The combined PR6423/014-030 and CON021 assembly covers both the sensing and signal-conditioning stages of an eddy current measurement channel. The sensor is installed at the machine, while the converter interfaces the probe with the monitoring system.

Rotating Shaft → PR6423/014-030 → CON021 → Monitoring Module → Alarm / Protection System

This configuration is particularly useful when an existing machinery monitoring system requires a dedicated eddy current sensing channel with compatible signal-conditioning electronics.

Industrial Applications

Installation and Maintenance

1. Confirm that the PR6423/014-030+CON021 combination matches the intended monitoring-channel configuration.
2. Inspect the sensor, converter, and associated cable connections before installation.
3. Mount the PR6423 sensor securely at the specified machine measurement point.
4. Establish the correct relationship between the sensing head and conductive target.
5. Verify that the probe remains mechanically stable during machine operation.
6. Protect the sensor cable from excessive bending, pulling, and mechanical damage.
7. Install the CON021 in an appropriate location within the instrumentation arrangement.
8. Check the sensor-to-converter connection before applying operating power.
9. Verify the converter connection to the associated machinery monitoring channel.
10. Observe the measurement during commissioning and compare it with expected machine behavior.
11. If the signal is unstable, check the probe position, cable, converter, and monitoring channel as a complete signal path.
12. After replacement, perform a functional measurement check before returning the monitored equipment to normal operation.

Compatible System Components

Recommended Related Models

Key Advantages

• Combines sensing and signal-conditioning functions in one measurement arrangement.
• Provides non-contact detection of conductive rotating machine targets.
• Uses an 8 mm sensing head for shaft displacement and proximity applications.
• Reduces the need to treat the probe and signal-conditioning stage as separate measurement channels.
• Suitable for integration with machinery monitoring and protection equipment.
• Applicable to continuous monitoring of critical rotating machinery.

Technical FAQs

What is the function of the CON021 in the PR6423/014-030+CON021 combination?

The PR6423/014-030 performs the physical eddy current measurement, while the CON021 handles the associated signal-conditioning function. The converter therefore forms the interface between the probe and the downstream monitoring equipment.

Can a fault in the converter appear similar to a defective probe?

Yes. A problem in the CON021, sensor cable, connections, or monitoring channel can result in an abnormal or missing measurement signal. Troubleshooting should therefore cover the complete path from the probe through the converter to the monitoring input.

Why should the sensor and CON021 be checked as a matched measurement chain?

The sensor generates the measurement signal and the converter processes that signal for the monitoring system. Incorrect compatibility, wiring, or configuration between these stages can affect the final measurement even when the individual components appear physically undamaged.

What should be checked when shaft displacement readings are inconsistent?

Check the probe mounting and probe-to-target relationship first, followed by the sensor cable and CON021 connections. If the physical installation is correct, the converter and downstream monitoring channel should be examined for signal-conditioning or configuration problems.