Product Overview

The Epro PR6423/10R-030-CN+CON021 combines an 8 mm eddy current sensor with a CON021 eddy current signal converter for non-contact monitoring of rotating machinery. The configuration forms a measurement channel for detecting changes in the relative position between the sensor and a conductive machine target.

The PR6423 sensor can be installed near a shaft, rotor, or other suitable conductive surface where direct mechanical contact is undesirable. As the target moves relative to the probe, the sensing response changes, allowing the measurement system to observe shaft displacement, position, or vibration-related movement.

The CON021 signal converter forms the signal-conditioning stage of the channel. It receives the sensor response and converts it into a form suitable for the associated monitoring equipment. This makes the combined assembly useful in machinery monitoring arrangements where the sensing and signal-conditioning components are installed as a defined pair.

For service work, the complete measurement path should be considered rather than treating the probe as an isolated component. Probe positioning, target condition, cable connections, converter operation, and the receiving monitoring input can all influence the final measurement.

Technical Specifications

Product Features

• Combined PR6423 8 mm eddy current sensor and CON021 signal converter.
• Provides non-contact measurement of conductive rotating targets.
• Suitable for shaft displacement, position, and vibration-related monitoring.
• Integrates the sensing and signal-conditioning stages into a defined measurement channel.
• Applicable to turbines, compressors, generators, motors, pumps, and other rotating machinery.
• Suitable for continuous machinery condition-monitoring installations.
• Supports measurement applications where direct contact with the rotating shaft is unsuitable.
• Useful for maintenance and replacement of compatible Epro eddy current monitoring channels.

Working Principle

The PR6423 sensor generates an electromagnetic sensing field at the probe tip. When positioned near a conductive shaft or target, eddy currents are induced in the target. Changes in the distance between the probe and target alter the electrical response of the sensing circuit.

The resulting sensor signal is transferred to the CON021 signal converter, which conditions the signal for use by compatible monitoring equipment. The downstream monitoring system can then evaluate the measurement for shaft displacement, position, vibration-related movement, alarm, or protection functions according to the installed configuration.

Conductive Shaft / Target → PR6423/10R-030-CN Sensor → CON021 Signal Converter → Monitoring System → Alarm / Protection

Measurement quality depends on the complete sensing channel. Probe-to-target positioning, alignment, target surface condition, cable integrity, converter operation, and receiving-input compatibility should be checked together during commissioning and troubleshooting.

Role in an Epro Eddy Current Monitoring Architecture

The PR6423/10R-030-CN+CON021 covers the sensing and signal-conditioning stages of an eddy current monitoring channel. The probe establishes the physical measurement point, while the converter prepares the sensor response for transmission to the monitoring system.

Rotating Shaft → PR6423 Sensor → CON021 Converter → Monitoring Input → Machinery Monitoring System → Alarm / Protection

The combined sensor and converter should be evaluated as one measurement channel, while the output interface must be matched to the receiving monitoring equipment.

Industrial Applications

Installation and Maintenance

1. Verify the complete PR6423/10R-030-CN+CON021 part number before installation.
2. Confirm that the sensor, CON021 converter, and receiving monitoring equipment are compatible with the intended measurement architecture.
3. Isolate the rotating equipment and follow the applicable site safety procedure before installation or maintenance.
4. Inspect the sensor tip for contamination, impact damage, or other physical abnormalities.
5. Verify the mounting arrangement and position the probe correctly relative to the conductive target.
6. Establish the required probe-to-target relationship according to the applicable Epro system requirements.
7. Check probe alignment and ensure that the mounting structure remains mechanically secure during machine operation.
8. Inspect sensor and converter cabling for damage, loose connections, excessive bending, or environmental exposure.
9. Verify the CON021 connections and confirm that the signal path is correctly terminated.
10. Check the conditioned measurement output after installation and compare it with expected machine conditions.
11. If the signal is unstable or missing, inspect the probe position, target surface, cable, converter, and monitoring input before replacing components.
12. After replacement, perform a complete measurement-channel and machinery-monitoring functional test before returning the equipment to normal operation.

Compatible System Components

Recommended Related Models

Key Advantages

• Combines an 8 mm eddy current sensor with a CON021 signal converter.
• Provides a defined non-contact measurement path for compatible monitoring equipment.
• Supports shaft displacement, position, and vibration-related monitoring.
• Suitable for continuous measurement of critical rotating machinery.
• Integrates sensing and signal-conditioning functions within one configured channel.
• Useful for replacement and maintenance of compatible PR6423 measurement systems.

Technical FAQs

What is the purpose of the CON021 in this configuration?

The CON021 provides the signal-conditioning stage for the PR6423 sensor. It processes the sensor response so that the measurement can be transferred to compatible downstream monitoring equipment.

Why should the PR6423/10R-030-CN probe position be checked carefully?

The eddy current response depends on the relationship between the probe and conductive target. Incorrect gap, alignment changes, or movement of the mounting arrangement can therefore alter the measurement even when the electronics are functioning normally.

Does the “-CN” designation change the way the complete channel should be installed?

The complete part number should be matched against the installed system configuration rather than interpreting one suffix in isolation. The sensor, converter, cabling, mounting arrangement, and monitoring input should be treated as a complete measurement path.

What should be checked if the converter output does not match the expected shaft condition?

Inspect the probe-to-target relationship first, followed by the sensor cable, CON021 connections, converter output, and receiving monitoring input. Mechanical installation and signal-conditioning issues should be ruled out before replacing the sensor.