Product Overview

The Epro PR6423/010-130+CON021 combines an 8 mm eddy current sensor with an eddy current signal converter for non-contact monitoring of rotating machinery. The assembly is used where shaft movement, displacement, or vibration needs to be detected without mechanical contact with the rotating component.

The PR6423/010-130 sensor is positioned toward the conductive target, typically a rotating shaft, while the CON021 provides the associated signal conversion interface. This combination is suitable for machinery monitoring installations where the sensor signal must be conditioned before being transferred to downstream monitoring equipment.

Typical applications include turbines, compressors, pumps, generators, and other rotating machines requiring continuous shaft-condition information. The non-contact sensing method allows mechanical movement to be observed while avoiding physical wear between the probe and shaft.

During installation and maintenance, the sensor mounting, probe-to-target relationship, cable connections, and converter interface should be checked together. A stable mechanical installation is particularly important when the measurement is used for machinery protection or vibration monitoring.

Technical Specifications

Product Features

• 8 mm eddy current sensor for non-contact rotating machinery measurement.
• Includes the CON021 eddy current signal converter.
• Detects relative movement between the probe and conductive rotating targets.
• Suitable for shaft displacement and vibration-related measurement.
• Operates without physical contact with the monitored shaft.
• Suitable for continuous machinery monitoring applications.
• Applicable to turbines, compressors, pumps, generators, and other rotating equipment.
• Supports machinery protection and condition monitoring systems.
• Combines the sensing element and signal conversion interface in one product configuration.
• Suitable for installations requiring direct monitoring of rotating shaft movement.

Working Principle

The PR6423/010-130 uses an eddy current sensing principle to detect changes in the distance between the probe and a conductive rotating target. The probe establishes an electromagnetic field around the target area. Movement of the shaft changes the electrical response of the sensing circuit, allowing relative displacement to be detected without physical contact.

The CON021 works as the associated signal conversion interface. It processes the sensor output so that the measurement can be transferred to compatible machinery monitoring equipment for further evaluation.

Rotating Shaft → PR6423/010-130 Sensor → CON021 Signal Converter → Machinery Monitoring System → Alarm / Protection / Control

The actual measurement depends on the mechanical position of the probe relative to the shaft. For this reason, probe mounting and installation stability should be checked whenever the measured signal differs unexpectedly from normal machine behavior.

Role in a Rotating Machinery Monitoring Architecture

The PR6423/010-130+CON021 assembly forms the sensing and signal-interface section of a rotating machinery monitoring chain. The probe detects shaft movement at the machine, while the converter prepares the signal for the monitoring equipment.

Rotating Machine → PR6423/010-130 → CON021 → Monitoring Module → Protection / Control System

Industrial Applications

Installation and Maintenance

1. Install the sensor at the specified measurement position relative to the monitored shaft.
2. Secure the probe mounting to prevent movement caused by machine vibration.
3. Maintain a stable probe-to-target relationship during machine operation.
4. Ensure the probe does not physically contact the rotating shaft.
5. Route the sensor cable to minimize mechanical stress and potential damage.
6. Avoid excessive bending or pulling forces on the sensor cable.
7. Inspect connectors and cable terminations before commissioning.
8. Verify the sensor connection to the CON021 signal converter.
9. Confirm that the monitoring equipment receives a stable measurement signal.
10. Compare initial readings with known normal operating conditions of the machine.
11. Inspect the probe mounting, cable, and converter connections during scheduled maintenance.
12. Before replacing the assembly, verify the complete model configuration, wiring, installation position, converter interface, and monitoring-system settings.

Related Components

Recommended Related Models

Key Advantages

• Combines an 8 mm eddy current sensor with the associated CON021 signal converter.
• Enables non-contact measurement of rotating shaft movement.
• Suitable for shaft displacement and vibration-related monitoring.
• Supports rotating machinery condition monitoring and protection applications.
• Reduces the need to separately specify the sensor and signal converter for the combined configuration.
• Suitable for turbines, compressors, pumps, generators, and other rotating equipment.

Technical FAQs

What is the function of the CON021 in this configuration?

The CON021 is the associated eddy current signal converter for the PR6423/010-130 sensor. It provides the signal interface between the sensing element and the downstream machinery monitoring equipment.

Why might the measured value change after the probe has been replaced?

A replacement probe can produce different readings if its installation position or probe-to-shaft relationship is not reproduced correctly. Mounting position, mechanical stability, cable connections, and the associated converter should all be checked during commissioning.

Is the PR6423/010-130+CON021 suitable for vibration monitoring?

It can be used as part of a rotating machinery measurement chain where shaft movement associated with vibration needs to be monitored. The final vibration-monitoring function depends on the mechanical measurement arrangement and the connected monitoring system.

What should be checked if the monitoring system receives no signal?

Check the sensor mounting and cable connections first, followed by the connection between the PR6423/010-130 and CON021. The converter interface and the receiving machinery monitoring input should then be checked to determine whether the problem is located in the sensor, signal path, or monitoring equipment.