EPRO PR6423/013-130

Product Overview

The EPRO PR6423/013-130 is a high-performance, non-contact 8mm eddy current displacement sensor produced by the EPRO brand under Emerson. This product is specifically designed for demanding industrial environments, particularly for continuous online condition monitoring and protection of critical rotating machinery. Utilizing the eddy current principle, the sensor accurately and reliably measures key parameters such as dynamic displacement, static position, axial displacement, and rotational speed of the rotating shaft relative to the sensor probe. The PR6423/013-130 model represents its specific physical configuration and electrical characteristics, and is suitable for applications requiring high precision, high stability, and long-term reliability, such as health monitoring systems for core equipment like steam turbines, gas turbines, hydro turbines, compressors, gearboxes, pumps, and fans.

Product Features and Advantages

High-precision dynamic and static measurement capabilities Dynamic Displacement

PR6423/013-130 can capture the micrometer-level radial or axial vibrations of the shaft in real time, with the frequency response range typically ranging from 0 to 10 kHz, which is sufficient to cover the characteristic frequencies of most rotating machinery faults. Static Position

Thrust Position is used to monitor the position of the thrust disk, preventing excessive axial movement of the rotor and thereby avoiding friction between the moving and stationary components.

Shaft Bow / Eccentricity monitors the static bending degree of the shaft during low-speed or start-stop stages, preventing severe vibration caused by excessive eccentricity during high-speed startup.

Differential Expansion, in equipment with significant thermal expansion such as steam turbines, can be used in conjunction with a dedicated installation method to indirectly reflect the relative expansion between the cylinder and the rotor.

Outstanding environmental adaptability and reliability design

Wide temperature range stability

The probe body can operate for a long time at -35°C to +180°C. Internal temperature compensation technology ensures minimal sensitivity drift during extreme temperature changes such as cold start, full load operation, and emergency shutdown.

Strong anti-pollution ability

The IP66 protection rating means that the sensor can still work normally in high humidity, steam, and oil mist-filled environments. The PEEK material at the end is resistant to oil and solvents, and is not prone to aging or cracking.

Armored cable structure

The outer layer of stainless steel braided armor provides mechanical protection, preventing damage from tools, burning from high-temperature pipelines, or breakage from vibration; the inner layer of PTFE insulation layer has excellent dielectric properties and thermal resistance, ensuring signal integrity.

Safety integrity and functional safety compliance

ATEX/IECEx ia level certifications

Indicate that the sensor, under normal operation and single fault conditions, does not have enough energy to ignite a specific concentration of explosive gas mixtures, and can be safely used in hazardous zones such as Zone 0/1 or Zone 20/21.

Support for SIL applications

Although the sensor itself is an analog device, its high reliability and deterministic output make PR6423/013-130 a key component for building SIL 2 or SIL 3 safety instrumented systems. When used with transmitters and logic controllers that comply with IEC 61508 standards, PR6423/013-130 can be used to trigger emergency shutdown (ESD) to prevent catastrophic accidents.