Product Overview

The Epro PR6423/013-110 is an 8 mm eddy current sensor for non-contact measurement of the relative position between the probe and a conductive machine target. It is used as the sensing element in machinery monitoring channels where mechanical movement needs to be detected without physical contact.

The sensor is particularly suited to rotating equipment with measurable shaft movement. When installed near a conductive shaft, it can detect changes in the probe-to-target relationship associated with radial or axial movement. This makes it applicable to turbines, compressors, generators, pumps, and other rotating machinery.

The PR6423/013-110 is normally connected to compatible signal-conditioning electronics rather than operating as a complete monitoring device by itself. The conditioned signal can then be supplied to machinery monitoring, alarm, or protection equipment.

During installation and maintenance, the mechanical position of the probe is as important as the electrical connection. Probe mounting, sensing gap, target surface, cable condition, and the associated driver should be checked when commissioning the measurement channel or investigating an abnormal reading.

Technical Specifications

Product Features

• 8 mm eddy current sensing head for non-contact measurement.
• Detects relative movement between the sensor and conductive targets.
• Suitable for shaft displacement and vibration-related monitoring.
• Can be connected to compatible Epro signal-conditioning electronics.
• Suitable for rotating machinery condition-monitoring systems.
• Applicable to turbines, compressors, generators, pumps, and other industrial equipment.
• Useful as the sensing element in machinery alarm and protection channels.

Working Principle

The PR6423/013-110 uses an electromagnetic sensing field to detect changes in the position of a nearby conductive target. Variations in the distance between the sensing head and target change the electrical response of the eddy current circuit.

For shaft monitoring, the probe is positioned close to the conductive shaft. Radial or axial shaft movement changes the probe-to-shaft gap, and the associated driver electronics convert the sensor response into a measurement signal for the monitoring system.

Conductive Shaft / Target → PR6423/013-110 Sensor → Signal Conditioner / Driver → Machinery Monitoring System → Alarm / Protection

The probe provides the primary sensing information, while signal conditioning and monitoring equipment perform the subsequent processing and protection functions.

Role in a Machinery Monitoring Architecture

The PR6423/013-110 is installed at the measurement point and acts as the front-end sensing element of the machinery monitoring channel.

Rotating Shaft → PR6423/013-110 → Driver / Signal Conditioning → Monitoring System → Alarm & Protection

This arrangement separates the sensing function from signal processing and higher-level machinery protection, allowing individual stages to be checked during troubleshooting.

Industrial Applications

Installation and Maintenance

1. Confirm that the PR6423/013-110 is suitable for the intended machinery monitoring channel.
2. Verify the compatible driver or signal-conditioning equipment before installation.
3. Mount the sensor securely at the specified measurement location.
4. Position the sensing head relative to the conductive target according to the applicable installation requirements.
5. Verify the probe-to-target gap during commissioning.
6. Confirm that the monitored target provides a suitable conductive surface and geometry.
7. Route the sensor cable to minimize mechanical stress, abrasion, and accidental damage.
8. Inspect connectors and electrical interfaces before applying system power.
9. Check the measurement signal during commissioning for stable and repeatable behavior.
10. Inspect probe mounting and target clearance if the measurement becomes unstable.
11. Check the cable, connections, and associated driver if the sensor signal is missing or abnormal.
12. After sensor replacement, verify the complete measurement channel before returning the machinery monitoring or protection system to service.

Compatible System Components

Recommended Related Models

Key Advantages

• Provides non-contact sensing of conductive rotating machinery targets.
• 8 mm sensing head is suitable for compact machinery measurement locations.
• Supports shaft displacement and vibration-related monitoring.
• Can be integrated with compatible Epro signal-conditioning equipment.
• Suitable for turbines, compressors, generators, pumps, and other rotating equipment.
• Allows the sensing stage to be evaluated separately from downstream monitoring electronics.

Technical FAQs

What is the PR6423/013-110 used for in a machinery monitoring system?

It serves as the sensing element for detecting changes in the relative position between the probe and a conductive target. On rotating machinery, this can support shaft displacement and vibration-related measurements.

Does the sensor directly generate the final machinery protection signal?

No. The PR6423/013-110 is the sensing element. Its signal normally passes through compatible driver or signal-conditioning electronics before being evaluated by machinery monitoring or protection equipment.

What installation condition has the greatest effect on probe measurement?

The relationship between the probe and conductive target is critical. Incorrect sensing gap, unstable mounting, target irregularities, or probe movement can all affect the measurement.

How can an intermittent PR6423/013-110 signal be investigated?

Check the probe mounting and sensing gap first, then inspect the cable and connectors. If these are satisfactory, the associated driver or signal-conditioning equipment and downstream monitoring channel should be checked.