Product Overview

The Epro PR6423/010-110+CON021 combines a PR6423 eddy current sensor with a CON021 signal converter for non-contact measurement of shaft movement in rotating machinery. The sensor provides the mechanical measurement at the machine, while the converter handles the associated electrical signal interface.

The PR6423/010-110 sensor is positioned close to a conductive shaft or target surface. During operation, changes in shaft position alter the distance between the sensor head and the target. The eddy current sensing circuit detects this change without requiring physical contact with the rotating component.

The CON021 processes the sensor signal so it can be used by downstream machinery monitoring equipment. This combined configuration is suitable for measurement channels where shaft displacement, radial vibration, or relative position needs to be continuously observed.

Typical installations include turbines, compressors, pumps, generators, and other critical rotating equipment. The sensor is installed at the required measurement point, while the converter and monitoring electronics form the downstream portion of the measurement chain.

Technical Specifications

Product Features

• PR6423/010-110 eddy current sensor combined with a CON021 signal converter.
• 8 mm sensor head for rotating machinery measurement.
• Non-contact sensing of shaft movement.
• Suitable for shaft displacement and vibration monitoring.
• Converter provides the interface between the sensor and downstream electronics.
• Suitable for continuous machinery condition monitoring.
• Applicable to turbines, compressors, pumps, generators, and motors.

Working Principle

The PR6423/010-110 generates an electromagnetic field at the sensing head. When positioned near a conductive rotating target, eddy currents are induced in the target. The electrical response varies according to the distance between the sensor and target surface.

When the shaft moves because of radial vibration, axial displacement, or other mechanical changes, the sensor-to-target gap changes. The CON021 receives the sensor signal and provides the associated signal conversion for the monitoring channel.

Rotating Shaft → PR6423/010-110 Sensor → CON021 Signal Converter → Machinery Monitoring System → Alarm / Protection

The complete channel can be used for:

• Relative shaft vibration monitoring
• Shaft displacement measurement
• Shaft position monitoring
• Radial movement detection
• Continuous rotating machinery condition monitoring

Mechanical stability at the sensor mounting point is important because unwanted sensor movement can be interpreted as a change in shaft position.

Role in a Rotating Machinery Control Architecture

The combined sensor and converter assembly forms the front-end measurement portion of a rotating machinery monitoring channel. The sensor detects the physical shaft movement, while the converter processes the sensor signal before it reaches the monitoring system.

Machine Shaft → PR6423/010-110 → CON021 → Monitoring Module → DCS / Protection System

This configuration keeps the sensing point close to the machine while allowing signal processing and monitoring equipment to be located in the appropriate instrumentation or control cabinet.

Industrial Applications

Installation and Maintenance

1. Mount the PR6423/010-110 sensor securely at the designated measurement point.
2. Position the sensor head correctly toward the conductive target.
3. Verify the sensor-to-target gap during installation and commissioning.
4. Ensure the sensor mounting structure remains mechanically stable.
5. Connect the sensor correctly to the CON021 signal converter.
6. Protect the sensor cable from excessive vibration and mechanical damage.
7. Avoid excessive bending or stress at cable connections.
8. Install the converter in a suitable location for the measurement system architecture.
9. Verify the complete signal path before machine startup.
10. Check signal stability during initial equipment operation.
11. Compare measured shaft movement with normal machinery operating conditions.
12. Inspect the sensor, converter connections, mounting, and cabling during scheduled maintenance.

If the measurement becomes unstable, check the complete channel from the sensor mounting and target gap through the CON021 and downstream monitoring electronics.

Related Components

Recommended Related Models

Key Advantages

• Combines the PR6423/010-110 sensor with a CON021 signal converter.
• Non-contact measurement of rotating shaft movement.
• 8 mm sensor head for compact machinery measurement locations.
• Suitable for shaft displacement and vibration monitoring.
• Provides a practical sensor-to-monitoring signal interface.
• Suitable for continuous monitoring of critical rotating equipment.
• Applicable to turbine, compressor, pump, generator, and motor applications.

Technical FAQs

What does the PR6423/010-110+CON021 combination measure?

It is used to detect changes in the distance between the sensor and a conductive rotating target, supporting measurement of shaft displacement, vibration-related movement, and relative shaft position.

What is the relationship between the PR6423/010-110 and CON021?

The PR6423/010-110 is the eddy current sensing element installed near the monitored target. The CON021 is the associated signal converter used to process and interface the sensor signal with downstream monitoring equipment.

Where is this sensor and converter combination typically used?

It is suitable for rotating machinery such as turbines, compressors, pumps, generators, motors, and other equipment where continuous shaft movement monitoring is required.

What should be checked before commissioning the measurement channel?

The sensor mounting, sensor-to-target gap, cable connections, CON021 interface, and downstream monitoring channel should be verified. Signal stability should also be checked during initial machine operation.