Product Overview

The Epro PR6423/10R-040-HT+CON021 combines an 8 mm eddy current sensor with a CON021 eddy current signal converter for non-contact monitoring of rotating machinery. The combination forms a measurement channel for detecting relative movement between a conductive shaft or rotor and the installed probe.

The PR6423/10R-040-HT sensor is intended for installations where the sensing point may be exposed to elevated temperatures within the applicable operating limits. It can be positioned near turbine shafts, compressor rotors, generator shafts, and other conductive targets where direct mechanical contact would be undesirable.

The CON021 signal converter receives the sensor response and provides the signal-conditioning stage required for the associated monitoring system. Combining the sensor and converter in one defined configuration simplifies the identification of the complete measurement channel during installation and maintenance.

For troubleshooting, the sensor and converter should be evaluated together with the mechanical installation and downstream monitoring equipment. Probe-to-target positioning, alignment, target surface condition, cable integrity, temperature conditions, converter operation, and monitoring-input compatibility can all influence the observed signal.

Technical Specifications

Product Features

• Combined PR6423 8 mm eddy current sensor and CON021 signal converter.
• Supports non-contact measurement of conductive rotating machinery targets.
• Suitable for shaft position, displacement, and vibration-related monitoring.
• -HT configuration for applicable elevated-temperature installation conditions.
• Integrates the sensing and signal-conditioning stages into a defined measurement channel.
• Applicable to turbines, compressors, generators, motors, pumps, and other rotating equipment.
• Suitable for continuous machinery condition-monitoring and protection arrangements.
• Useful for maintenance and replacement of compatible Epro PR6423 measurement channels.

Working Principle

The PR6423/10R-040-HT sensor establishes an electromagnetic sensing field near the conductive target. As the shaft or rotor moves relative to the probe, the eddy current response changes with the target-to-probe relationship.

The sensor response is transferred to the CON021 signal converter, which conditions the signal for the receiving monitoring equipment. The resulting measurement can be used by the downstream system to observe shaft position, displacement, or vibration-related movement and to support configured alarm or protection functions.

Conductive Shaft / Target → PR6423/10R-040-HT Sensor → CON021 Signal Converter → Monitoring System → Alarm / Protection

The high-temperature sensor configuration addresses the environmental conditions at the sensing point, while the measurement principle remains based on eddy current detection. Correct probe positioning, target condition, cabling, converter operation, and downstream input compatibility remain essential to the complete measurement channel.

Role in an Epro Eddy Current Monitoring Architecture

The PR6423/10R-040-HT+CON021 occupies the sensing and signal-conditioning stages of an Epro eddy current monitoring channel. The sensor establishes the physical measurement point near the rotating target, while the CON021 prepares the sensor response for the monitoring system.

Rotating Shaft → PR6423/10R-040-HT Sensor → CON021 Converter → Monitoring Input → Machinery Monitoring System → Alarm / Protection

The sensor and converter should be treated as a defined measurement channel, while the complete output interface must still be matched to the receiving monitoring equipment.

Industrial Applications

Installation and Maintenance

1. Verify the complete PR6423/10R-040-HT+CON021 part number before installation.
2. Confirm that the sensor temperature configuration, CON021 converter, and receiving monitoring equipment are suitable for the intended application.
3. Isolate the rotating equipment and follow the applicable site safety procedure before installation or maintenance.
4. Inspect the sensor tip and housing for contamination, impact damage, or other physical abnormalities.
5. Verify that the mounting arrangement allows correct probe positioning relative to the conductive target.
6. Establish the required probe-to-target relationship according to the applicable Epro measurement-system requirements.
7. Check probe alignment and ensure that the mounting structure remains mechanically secure during operation.
8. Route the sensor and converter cabling to minimize mechanical stress, excessive bending, heat exposure, and avoidable electrical interference.
9. Verify the CON021 connections and confirm that the sensor-to-converter signal path is correctly terminated.
10. Check the conditioned measurement output after installation and compare it with expected machine operating conditions.
11. If the signal changes unexpectedly, inspect probe position, target surface, cable condition, operating temperature, converter operation, 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.
• -HT configuration supports applicable elevated-temperature sensing locations.
• Suitable for shaft position, displacement, and vibration-related monitoring.
• Integrates sensing and signal-conditioning stages within one configured channel.
• Applicable to critical rotating machinery and machinery protection installations.

Technical FAQs

Why would the PR6423/10R-040-HT configuration be selected instead of the standard version?

The -HT configuration is intended for applications where the sensor installation environment involves elevated temperatures within its applicable limits. The environmental conditions at the actual sensing location should be evaluated when selecting the probe configuration.

What is the function of the CON021 in this combined assembly?

The CON021 provides the signal-conditioning stage between the PR6423 sensor and the downstream monitoring equipment. It prepares the sensor response for use by a compatible monitoring input.

Can elevated temperature affect the proximity measurement even when the sensor is correctly installed?

Temperature conditions can influence the overall measurement installation and associated electronics. The probe environment, mounting arrangement, target relationship, cable routing, and applicable operating limits should therefore be checked when investigating temperature-related signal changes.

What should be verified when replacing the complete PR6423/10R-040-HT+CON021 channel?

Verify the complete part-number configuration, probe installation, target relationship, sensor and converter connections, cable condition, and compatibility with the receiving monitoring input. A functional test of the complete channel should be performed before returning the machinery to service.