Product Overview

The Epro PR6423/01M-010+CON021 combines an 8 mm eddy current sensor with a CON021 eddy current signal converter to form a complete non-contact measurement channel for rotating machinery. The sensor detects relative movement between its sensing tip and a conductive machine target, while the converter conditions the sensor response for use by downstream monitoring equipment.

This configuration is suited to machinery where shaft position, displacement, or vibration-related movement needs to be monitored without physical contact. Typical installations place the PR6423 sensor close to a rotating shaft, while the CON021 converter forms the interface between the sensor and the machinery monitoring system.

The combined sensor-and-converter arrangement is useful in applications where the sensing point and electronic monitoring equipment are separated within the machine installation. It provides a defined measurement path from the rotating component through the eddy current sensing stage and signal-conditioning stage.

For maintenance work, the sensor and converter should be considered together as one measurement channel while still checking each part separately. Probe mounting, target condition, sensor gap, cable connections, converter operation, and downstream monitoring compatibility can all influence the final measurement.

Technical Specifications

Product Features

• Combined PR6423 8 mm eddy current sensor and CON021 signal converter.
• Non-contact measurement of conductive rotating machinery targets.
• Suitable for shaft displacement and vibration-related monitoring.
• Integrates sensing and signal-conditioning functions into one defined measurement channel.
• Applicable to continuous machinery condition-monitoring installations.
• Suitable for turbines, compressors, pumps, generators, motors, and other rotating equipment.
• Supports measurement arrangements where the sensing point is located near the monitored shaft.
• Requires correct sensor positioning and compatibility with the associated monitoring electronics.

Working Principle

The PR6423 sensor operates by generating an electromagnetic field at the sensing tip. When a conductive shaft or target moves relative to the probe, the interaction between the field and target changes according to the probe-to-target distance.

The resulting sensor response is transferred to the CON021 eddy current signal converter, which conditions the signal into a form suitable for the downstream monitoring system. The monitoring equipment can then use the conditioned signal to evaluate shaft position, displacement, or vibration-related behavior.

Rotating Shaft / Conductive Target → PR6423/01M-010 Sensor → CON021 Signal Converter → Machinery Monitoring System → Alarm / Protection

Measurement accuracy depends on the complete sensing arrangement. Sensor gap, probe alignment, target material and surface condition, cable connections, converter compatibility, and mechanical stability should be considered together rather than treating the sensor as an isolated component.

Role in an Epro Eddy Current Monitoring Architecture

The PR6423/01M-010+CON021 occupies the sensing and signal-conditioning portion of the machinery monitoring chain. The PR6423 sensor performs the non-contact detection at the machine, while the CON021 converter prepares the resulting signal for the monitoring equipment.

Rotating Machinery → Eddy Current Sensor → CON021 Signal Converter → Monitoring System → Alarm / Protection

The combined assembly is particularly useful when the monitoring architecture requires a defined sensor-to-converter interface before the signal reaches the higher-level monitoring equipment.

Industrial Applications

Installation and Maintenance

1. Confirm the complete PR6423/01M-010+CON021 model before installation or replacement.
2. Verify that the sensor and CON021 converter match the intended machinery monitoring architecture.
3. Isolate the relevant machinery and follow site safety procedures before working near rotating equipment.
4. Inspect the sensor tip, cable, and converter housing for visible damage before installation.
5. Mount the sensor securely and establish the required position relative to the conductive target.
6. Verify the sensor-to-target gap according to the requirements of the complete measurement system.
7. Maintain correct probe alignment and avoid mechanical movement of the sensing assembly.
8. Protect the sensor cable and converter connections from excessive mechanical stress, contamination, and avoidable interference.
9. Confirm that the converter connections correspond to the intended monitoring channel.
10. Check the conditioned output signal after installation and compare it with expected machine behavior.
11. If the signal becomes unstable, inspect the probe gap, target surface, cable path, converter, and monitoring input before replacing components.
12. After replacement, perform a complete measurement-channel and machinery monitoring test before returning the equipment to normal service.

Compatible System Components

Recommended Related Models

Key Advantages

• Combines an 8 mm eddy current sensor with a CON021 signal converter.
• Provides a defined sensing and signal-conditioning path for machinery monitoring.
• Enables non-contact measurement of conductive rotating-machine targets.
• Suitable for shaft displacement and vibration-related applications.
• Simplifies integration of the sensor signal with compatible monitoring equipment.
• Useful for maintenance and replacement of complete PR6423 measurement channels.

Technical FAQs

Why use the PR6423/01M-010 together with a CON021 converter?

The PR6423 sensor detects the relative position of the conductive target, while the CON021 provides the associated signal-conditioning function. Using the specified combination establishes a defined measurement channel for connection to compatible monitoring equipment.

How does target material affect an eddy current measurement?

Eddy current sensing depends on the electrical characteristics and geometry of the conductive target. Changes in target material, surface condition, or target geometry can therefore influence the sensor response and should be considered when installing or troubleshooting the measurement channel.

What is the significance of the 8 mm sensor configuration?

The 8 mm designation identifies the sensor configuration and physical sensing-head size. It should not be treated as the required probe-to-target operating gap. The actual gap must be established according to the sensor and complete measurement-system requirements.

What should be checked if the CON021 output is present but the monitoring value is incorrect?

Check the sensor mounting position and gap first, followed by target condition, cable connections, converter configuration, and the downstream monitoring input. Comparing the converter output with expected machine conditions can help determine whether the problem originates at the sensing stage, signal-conditioning stage, or monitoring system.