Overview of CON021

The EPRO CON021 is a precision signal converter developed by Emerson (formerly EPRO) for use with the PR642x series non-contact eddy current sensors. It converts the raw analog signals from the probes into standardized output signals (such as 4–20 mA or 0–10 V DC), allowing for seamless integration with control systems, protection relays, and condition monitoring platforms.

This converter is deployed across various critical applications such as steam and gas turbines, hydroelectric generators, and industrial compressors, where accurate shaft displacement and vibration measurements are essential for predictive maintenance and machine protection. Its high-frequency range and fast response time make it ideal for dynamic fault detection and high-speed applications.

The CON021 is built with a rugged design, wide operating temperature range, and an IP65-rated enclosure, ensuring reliable performance in harsh industrial environments. Furthermore, it is compatible with a wide range of sensor models, including PR6422, PR6423, PR6424, PR6425, PR6426, and PR6453, making it highly flexible and suitable for various asset types.

Overview

The EPRO PR6423/000‑031 is an 8 mm eddy current displacement sensor designed for non-contact measurement of shaft vibration, axial displacement, and position in turbomachinery. Part of Emerson’s AMS machinery protection portfolio, it delivers precise monitoring of critical rotating equipment, including turbines, compressors, pumps, and gearboxes.

Its rugged IP66-rated construction ensures reliable operation in harsh industrial environments with high temperatures, vibration, and electromagnetic interference. Additionally, the sensor integrates seamlessly with the CON021 converter and AMS monitoring systems, providing dependable data for predictive maintenance, fault detection, and overall asset protection.

Technical Data

Typical Applications

• Shaft vibration monitoring in turbines, compressors, and large rotating machinery

• Axial displacement measurement for thrust bearing protection

• Position and eccentricity detection in high-speed rotating equipment

• Predictive maintenance programs in power generation and petrochemical industries

• Integration with AMS systems for comprehensive machinery diagnostics and protection

FAQ

Q1: What is the primary function of the PR6423/000‑031 sensor?
It measures shaft vibration, axial displacement, and position using a non-contact eddy current principle.

Q2: Can the sensor be used in harsh environments?
Yes. It is IP66-rated and operates reliably in temperatures up to +180 °C.

Q3: What target materials are supported?
It is optimized for ferromagnetic steel, such as 42CrMo4 (AISI 4140).

Q4: Is the sensor compatible with monitoring systems?
Yes. It integrates with Emerson AMS systems and CON021 converters.

Q5: Which industries typically use this sensor?
It is widely applied in power generation, oil & gas, chemical processing, and heavy industrial machinery monitoring.