EPRO PR6423/000-131-CN CON031 Eddy Current Sensor System

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The EPRO PR6423/000-131-CN CON031 is an industrial eddy current measurement system designed for continuous monitoring of shaft displacement, relative vibration, and rotor position in critical rotating machinery. The system consists of the PR6423 proximity probe and the CON031 signal converter, providing a complete solution for machinery condition monitoring and protection applications.

Developed for use in demanding industrial environments, this sensor system utilizes non-contact measurement technology to accurately detect the distance between the probe tip and a conductive target surface. Because no physical contact occurs during operation, measurement performance remains stable even under high-speed operating conditions.

The PR6423 series has become a widely adopted solution in industries where machinery availability and operational stability are essential. It is commonly installed on steam turbines, gas turbines, centrifugal compressors, turbo-expanders, generators, pumps, and large electric motors. By continuously measuring shaft movement, the system provides valuable operating data that can be used for machine diagnostics, performance evaluation, and protection functions.

Designed for long-term industrial service, the probe features a robust stainless-steel housing capable of withstanding vibration, oil exposure, humidity, and elevated temperatures typically encountered in process plants and power generation facilities.

Ø Non-Contact Measurement Technology

The eddy current principle allows accurate displacement measurement without direct contact between the sensor and the rotating shaft, eliminating mechanical wear and extending service life.

Ø High Measurement Stability

The sensor maintains consistent output characteristics during continuous operation, making it suitable for permanent monitoring installations.

Ø Fast Dynamic Response

Capable of detecting rapid shaft movement changes associated with transient operating conditions, startup sequences, and load variations.

Ø Industrial-Grade Construction

The stainless-steel probe body provides excellent resistance to corrosion, contamination, and mechanical stress.

Ø Suitable for Critical Machinery

Specifically developed for monitoring high-value rotating assets where equipment failure can result in costly downtime.

Ø Easy System Integration

Compatible with EPRO machinery monitoring platforms as well as various vibration monitoring, PLC, and DCS systems.

Ø Reliable Performance in Harsh Environments

Designed to operate in industrial locations exposed to oil mist, process contaminants, temperature fluctuations, and continuous vibration.

Model Number

PR6423/000-131-CN CON031

Manufacturer

EPRO

Product Type

Eddy Current Sensor System

Probe Series

PR6423

Converter Series

CON031

Probe Diameter

8 mm

Measuring Principle

Eddy Current Technology

Linear Measuring Range

2 mm

Sensitivity

8 V/mm

Frequency Response

Up to 20 kHz

Initial Gap

0.5 mm

Housing Material

Stainless Steel

Protection Rating

IP66

Thread Type

M10 × 1

Operating Temperature (Probe)

Up to 180°C–200°C

Cable Type

Industrial Shielded Cable

Installation Method

Fixed Mounting

Measurement Target

Conductive Metallic Surfaces

Country of Origin

Germany

The PR6423/000-131-CN CON031 can be used for a variety of machinery monitoring tasks, including:

Ø Relative shaft vibration measurement

Ø Radial shaft displacement monitoring

Ø Axial position measurement

Ø Rotor eccentricity monitoring

Ø Shaft runout detection

Ø Differential expansion monitoring

Ø Rotor position analysis

Ø Machine protection systems

Ø Condition monitoring programs

Ø Predictive maintenance applications

Ø Power Generation

Installed on steam turbines, gas turbines, generators, and auxiliary equipment to monitor shaft movement and machine operating conditions.

Ø Oil & Gas

Used in compressor trains, pumps, and process equipment where continuous monitoring is required to maintain operational reliability.

Ø Petrochemical Processing

Supports machinery protection systems by providing real-time displacement and vibration information.

Ø Heavy Manufacturing

Applied on large motors, fans, gearboxes, and rotating production equipment to improve maintenance planning.

Ø Marine and Offshore

Suitable for monitoring propulsion systems and critical rotating machinery operating under demanding environmental conditions.

Using the PR6423/000-131-CN CON031 as part of a machinery monitoring system can help maintenance personnel:

Ø Detect abnormal shaft movement at an early stage

Ø Monitor machinery condition during operation

Ø Reduce unexpected equipment shutdowns

Ø Improve maintenance scheduling efficiency

Ø Support root-cause analysis of mechanical issues

Ø Track long-term machine performance trends

Ø Increase availability of critical assets

What does the PR6423/000-131-CN CON031 measure?

The system measures shaft displacement and relative vibration by detecting changes in the distance between the probe and the rotating shaft.

Is this a complete measurement system?

Yes. The model includes both the PR6423 probe and the CON031 signal converter, forming a complete eddy current sensing system.

Which machinery is commonly monitored with this sensor?

The sensor is widely used on turbines, compressors, generators, pumps, motors, fans, and other critical rotating equipment.

Can the sensor operate continuously?

Yes. It is designed for permanent installation and continuous operation in industrial environments.

Why is non-contact measurement preferred?

Non-contact measurement eliminates mechanical wear between the sensor and target surface, ensuring stable long-term performance and reducing maintenance requirements.

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