EPRO PR6423/011-130 CON021 Eddy Current Displacement Sensor

The EPRO PR6423/011-130 CON021 is a precision-engineered eddy current displacement sensor designed for continuous, non-contact monitoring of critical rotating machinery. With an 8 mm probe tip diameter, the sensor delivers highly accurate measurements of shaft displacement, vibration, eccentricity, and position, making it an ideal solution for machinery protection and condition monitoring applications.

This model features an M10 × 1 threaded housing with a 35 mm thread length, providing secure installation and reliable mechanical stability in demanding industrial environments. The sensor is equipped with an armored cable, offering enhanced resistance to mechanical wear, abrasion, and external impacts, which is particularly beneficial in harsh operating conditions.

The PR6423/011-130 CON021 includes an 8.0-meter integrated cable, allowing flexible installation and easy connection to remotely mounted signal converters and monitoring systems. The cable is terminated with a LEMO connector, ensuring secure electrical connectivity, excellent signal integrity, and compatibility with EPRO machinery monitoring solutions.

Designed for use in steam turbines, gas turbines, compressors, pumps, fans, and other high-value rotating assets, the PR6423/011-130 CON021 provides stable, high-resolution measurement data essential for monitoring rotor dynamics and shaft behavior. By enabling early detection of conditions such as rotor imbalance, shaft misalignment, excessive vibration, and bearing wear, the sensor helps improve equipment reliability, reduce unplanned downtime, and support predictive maintenance strategies across power generation, oil and gas, petrochemical, and process industry applications.

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 to 45°C (+32 to +113°F)

Deviation from Best Fit Straight Line (DSL)

±0.025 mm (±1 mil) @ 0 to 45°C (+32 to +113°F)

Minimum Shaft Diameter

25 mm (0.79 in)

Target Material

Ferromagnetic Steel 42CrMo4 (AISI/SAE 4140) Standard; Other Materials Available on Request

Protection Class

IP66, IEC 60529

Operating Temperature Range (Sensor incl. 1 m Cable)

-35 to +180°C (-31 to +356°F)

Operating Temperature Range (Cable & Connector)

-35 to +150°C (-31 to +302°F)

Sensor Tip Material

PEEK (Polyether Ether Ketone)

Case Material

Stainless Steel

Cable Material

PTFE (Polytetrafluoroethylene)

Connector Material

Brass, Nickel-Plated

Weight (Sensor with 1 m Cable)

Approx. 100 g (3.53 oz)

PR6423/xxx-xxx (Standard)

A.Case thread, M10x1 or 3/8-24UNF

B.SW 11 mm for M10 threads, SW 7/9-16 in for 3/8-24UNF threads

C.Standard cable diameter 2.8 mm (0.110 in), minimum bending radius 25 mm (0.984 in)

D.Armored cable diameter 6 mm (0.236 in), minimum bending radius 35 mm (1.378 in)

E.Optional Adapter Plug after 1m cable from Sensor

F.Cable Length (Tolerances 0... +10%)

G. Lemo connector (male), 11.0 mm (0.433 in) diameter or open cable end

Q1: How does the EPRO PR6423/011-130 CON021 facilitate high-precision rotor dynamic analysis in critical turbomachinery applications?

The EPRO PR6423/011-130 CON021 employs advanced eddy current sensing technology to provide accurate, non-contact measurements of shaft displacement, vibration, and eccentricity, enabling detailed assessment of rotor behavior under varying operating conditions.

Q2: Why is the EPRO PR6423/011-130 CON021 considered an effective instrument for machinery health prognostics and predictive maintenance initiatives?

The EPRO PR6423/011-130 CON021 continuously captures real-time shaft motion data, helping maintenance teams identify emerging issues such as imbalance, misalignment, shaft bowing, and bearing deterioration before they impact equipment performance.

Q3: Which critical monitoring parameters can be evaluated using the EPRO PR6423/011-130 CON021 within advanced machinery protection systems?

The EPRO PR6423/011-130 CON021 is specifically designed to monitor radial displacement, axial position, rotor eccentricity, dynamic shaft movement, and vibration characteristics, providing essential inputs for equipment protection and operational diagnostics.

Q4: What engineering attributes enable the EPRO PR6423/011-130 CON021 to maintain measurement stability in harsh industrial environments?

The EPRO PR6423/011-130 CON021 incorporates a durable stainless-steel probe assembly, high-performance insulation materials, and a non-contact operating principle that ensures reliable performance under elevated temperatures, vibration, and process-related stresses.

Q5: In what ways does the EPRO PR6423/011-130 CON021 enhance asset reliability and operational continuity in rotating equipment installations?

By delivering continuous, high-resolution displacement measurements, the EPRO PR6423/011-130 CON021 supports early fault detection, minimizes unplanned outages, optimizes maintenance scheduling, and contributes to the long-term reliability of turbines, compressors, pumps, and other critical machinery.

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