PR6423/10R-040 Emerson Epro Eddy Current Displacement Sensor

Product Overview

The PR6423/10R-040 is a high-precision non-contact eddy current displacement sensor engineered for turbomachinery protection within Turbine Supervisory Instrumentation (TSI) systems. Operating on a contactless inductive measurement principle, this sensor measures shaft vibration, axial position, and eccentricity in high-speed rotating machinery. It outputs a proportional voltage signal that interfaces with machinery protection systems to assist in monitoring mechanical conditions and managing system downtime.

Features

• Frictionless operation via a contactless inductive measurement principle
• Ruggedized 8 mm diameter sensing tip constructed from ceramics and stainless steel
• High-durability armored jacket designed to withstand physical stresses during conduit routing
• Output signal compatibility with machinery protection systems for real-time analysis

Applications

• Steam turbine shaft vibration and axial position monitoring
• High-speed compressor eccentricity tracking
• Gearbox asset protection in power plants, refineries, and industrial pumping stations

Technical Specifications

Installation Guidelines

• Set the sensor at its electrical center during installation, which typically corresponds to -10 VDC for a standard converter, by monitoring the gap voltage with a voltmeter while adjusting the mounting thread.
• Maintain a minimum clear radius of 15 mm around the sensing tip to prevent metallic objects from distorting the magnetic field and causing false readings.
• Avoid routing the armored sensor cable parallel to high-voltage power lines, utilize dedicated instrument trays, and ground the cable armor exclusively at the machine housing to avoid noise induction from ground loops.

from ground loops.