Emerson PR6423/010-010 Eddy Current Sensor Precision Shaft Monitoring

Emerson PR6423/010-010 (part of the EPRO product line) is a high-precision, non-contact eddy current displacement sensor engineered to provide the reliable, real-time data needed to protect your most valuable rotating assets .

What is the Emerson PR6423/010-010?

The Emerson PR6423/010-010 is an 8mm eddy current displacement sensor designed for the continuous, non-contact measurement of shaft dynamics . It is a fundamental building block of modern machinery protection systems, used to monitor vibration, axial position, eccentricity, and other critical parameters in equipment like steam turbines, gas turbines, compressors, pumps, and gearboxes .

This sensor is part of the renowned EPRO PR6423 series and is designed to be used with a compatible signal converter, such as the CON021, to form a complete, high-performance measurement system . By providing a direct window into the behavior of the rotor, the PR6423/010-010 enables early fault detection and predictive maintenance, helping to prevent unplanned downtime .

Key Technical Specifications (Specs)

The PR6423/010-010 is built to meet the stringent requirements of international standards, including API 670 and DIN 45670 . Its specifications are tailored for the demanding environment of high-speed rotating machinery.

Manufacturer: Emerson (EPRO)

Model Number: PR6423/010-010

Sensor Type: Non-Contact Eddy Current Displacement Sensor 

Probe Diameter: 8 mm 

Linear Measurement Range: 2 mm (80 mils) 

Initial Air Gap: 0.5 mm (20 mils) 

Incremental Scale Factor (ISF): 8 V/mm (203.2 mV/mil) ±5% @ 0-45°C 

Deviation from Linearity (DSL): ±0.025 mm (±1 mil) @ 0-45°C 

Minimum Shaft Diameter: 25 mm (0.79”) 

Target Material (Standard): Ferromagnetic steel, such as 42CrMo4 (AISI/SAE 4140) 

Operating Temperature (Sensor Tip): -35 to +200°C (-31 to 392°F) 

Protection Class: IP66 (IEC 60529) 

Housing Material: Stainless Steel 

Weight (with 1m cable): Approx. 100 grams