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Technical Specifications

Product Introduction

The EPRO PR6423/000-101 is a high-precision, non-contact eddy current displacement sensor specifically designed for continuous monitoring of critical rotating machinery. As part of Emerson’s EPRO PR6423 series, it provides real-time measurement of shaft vibration, radial and axial displacement, eccentricity, and dynamic motion. The sensor’s robust structure and precise linearity make it ideal for demanding environments in power generation, petrochemical, and heavy process industries.

Within the EPRO product family, PR6423/000-101 represents a versatile model optimized for high temperature tolerance, precise response, and integration with advanced signal converters such as the CON 011, CON 021, or CON 041 modules. These pairings translate the sensor’s raw signal into actionable data for condition monitoring systems, DCS, or predictive maintenance platforms.

By using PR6423/000-101, operators gain accurate, reliable vibration data essential for early fault detection, machinery protection, and performance optimization. Its non-contact design eliminates mechanical wear, ensuring long-term stability even in harsh industrial conditions.

Core Advantages and Technical Highlights

Precision and linearity: The PR6423/000-101 delivers a nominal sensitivity of 8 V/mm across its linear range, maintaining excellent proportionality between signal voltage and measured displacement. This ensures stable readings and minimal deviation, essential for high-integrity vibration diagnostics.

Wide dynamic range: The sensor accurately captures both static and rapidly changing displacements, allowing it to measure steady shaft position as well as high-frequency vibrations. This versatility supports comprehensive condition monitoring.

High-temperature capability: The PR6423/000-101 operates reliably from –35 °C to +180 °C, with components designed to withstand thermal stress, corrosion, and mechanical shock. It is suited for installations close to turbine or compressor rotors where elevated temperatures are common.

Rugged construction and protection: Built from stainless steel and sealed to IP66, the probe resists dust, oil, and moisture ingress. The optional armored cable provides added protection in environments with mechanical abrasion or chemical exposure.

Compliance and safety: The PR6423/000-101 complies with DIN 45670, ISO 10817-1, and API 670 industrial standards, ensuring compatibility with global machinery protection systems. When paired with certified converters and barriers, it can be used safely in explosive or hazardous zones.

Signal integrity and reliability: Low temperature drift, minimal supply voltage sensitivity, and strong electromagnetic shielding contribute to long-term measurement stability. Even under severe vibration, calibration remains consistent over years of continuous service.

System integration flexibility: Designed for seamless use with EPRO converters, the PR6423/000-101 allows users to configure output scaling, filtering, and safety parameters to match site-specific monitoring requirements. This modular approach simplifies retrofits and new installations alike.

Typical Application Scenarios

The PR6423/000-101 is widely used for machinery protection and condition monitoring in critical rotating equipment. In turbine and generator sets, it tracks shaft displacement and vibration to detect unbalance, misalignment, or bearing wear. The sensor’s high-temperature resilience enables installation near rotor bearings and high-speed shafts without performance degradation.

In compressor systems, PR6423/000-101 provides continuous radial and axial vibration data, allowing operators to identify developing mechanical faults before they cause process interruptions. Its non-contact operation ensures accurate readings even under severe operational stress.

In petrochemical and refining facilities, the PR6423/000-101 is used for machinery installed in hazardous zones, paired with intrinsically safe converters for Ex-rated monitoring. The sensor’s rugged design ensures reliable operation amid vibration, moisture, and thermal cycling.

Additional applications include large industrial pumps, fans, gearboxes, and turbo-expanders—any asset where shaft motion must be measured with high accuracy. In each of these cases, PR6423/000-101 provides the front-end measurement critical for modern predictive maintenance and machine protection systems.

Related Model Recommendations

• PR6423/000-000 – Standard version without armored cable, suitable for general industrial use.

• PR6423/010-140 – Extended-range model for greater displacement measurements.

• PR6423/00R-101 – Reverse-mount configuration for special installation geometries.

• PR6422 / PR6424 / PR6425 – Similar EPRO probes offering different ranges and probe diameters for tailored applications.

• CON 011 / CON 021 / CON 041 – Compatible converter modules providing signal conditioning, intrinsic safety compliance, and standardized outputs.

• Armored extension cable assemblies – Optional accessories ensuring signal integrity over long distances or harsh environments.

Installation, Commissioning and Maintenance Instructions

Installation preparation: Before installing PR6423/000-101, ensure machinery is fully shut down and locked out. Confirm the mounting surface is clean and that the probe thread (M10 × 1 or equivalent) matches the installation port. Handle the probe carefully to avoid damaging the tip. Verify grounding continuity and inspect cable routing to avoid interference or sharp bends.

Commissioning: Install the PR6423/000-101 into its probe sleeve or mounting hole with proper torque and alignment to the shaft centerline. Adjust the initial air gap to approximately 0.5 mm to achieve linear operation. Connect the sensor to its associated converter, ensuring shield continuity and correct polarity. During commissioning, verify that output voltage corresponds to the expected displacement range and that the converter output is stable and within calibration limits.

Maintenance suggestions: The PR6423/000-101 requires minimal maintenance but should be visually inspected during scheduled outages. Clean the probe tip and housing to remove deposits that may affect measurement accuracy. Inspect cable armor and connectors for wear or looseness. Periodic recalibration using a certified reference setup ensures measurement integrity. Keep a spare probe and cable assembly in controlled storage to minimize downtime in the event of replacement.

Service and Guarantee Commitment

The EPRO PR6423/000-101 is manufactured under strict quality control and verified against international performance standards. Each sensor undergoes precision calibration and functional testing before shipment.

We provide comprehensive technical support, including installation guidance, signal verification, and application engineering assistance. A standard warranty covers defects in materials and workmanship under normal operating conditions. Post-warranty, our service program offers recalibration, replacement, and field-support options to sustain reliable performance throughout the product lifecycle.

Our commitment is to deliver lasting reliability, accurate measurement, and dependable support—ensuring that PR6423/000-101 continues to perform as a trusted component in your machinery protection and vibration monitoring system.

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