EPRO CON021+PR6423/13R-030 Sensor System | Eddy Current Vibration

Overview

The EPRO PR6423/13R-030 system is a high-precision non-contact eddy current displacement and vibration measurement solution designed for critical rotating machinery, including turbines, compressors, pumps, and gearboxes. It enables radial vibration, axial displacement, shaft eccentricity, and rotational speed monitoring, supporting predictive maintenance and machine protection according to API 670 standards.

This system includes the PR6423/13R-030 sensor and CON021 converter module, optimized for installations in restricted spaces or at special mounting angles.

Sensor (PR6423/13R-030)

Type: 8 mm eddy current displacement/vibration probe (“R” variant for restricted or angled installations)

Key Specifications:

• Linear Measurement Range: 2 mm (80 mils)

• Initial Air Gap: 3.0 mm (118 mils)

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

• Linearity (DSL): ±0.025 mm (±1 mil)

• Minimum Shaft Diameter: 25 mm (0.79 in)

• Operating Temperature: –40 °C to +150 °C

• Protection Class: IP66 (IEC 60529)

• Target Material: Conductive ferromagnetic steel (42CrMo4 / AISI 4140)

Measurement Functions:

• Radial vibration

• Axial displacement

• Shaft eccentricity

• Rotational speed

Typical Applications:

• Turbine shaft vibration monitoring in restricted mounting spaces

• Axial displacement monitoring for compressors and pumps

• Gearbox vibration analysis and fan rotor eccentricity detection

• Industrial machinery where space-constrained probe installation is required

Converter (CON021)

Function: Provides signal conditioning and linear output for PR6423/13R-030, suitable for integration into monitoring systems.

Technical Specifications:

• Frequency Range: 0–20,000 Hz (–3 dB)

• Rise Time: <15 μs

• Supply Voltage: –23 V to –32 V DC

• Output Range: –4 V to –20 V (configurable)

• Operating Temperature: –30 °C to +100 °C

• Protection Class: IP20

• Housing Material: LMgSi alloy

• Mounting: Panel mount with 4 screws (M5x20)

Typical Applications

• Power generation: steam and gas turbine shaft vibration monitoring

• Petrochemical: axial displacement monitoring for pumps and compressors

• Industrial machinery: gearbox vibration detection, fan rotor eccentricity analysis

• Restricted-space installations requiring angled probe mounting

FAQ / Technical Comparison

Q: How does PR6423/13R-030 differ from PR6423/13-030?
A: The “R” variant is optimized for restricted installation spaces or angled mounting. Performance specifications are otherwise equivalent.

Q: Can this sensor measure non-ferromagnetic materials?
A: No, it is calibrated for conductive ferromagnetic steel (42CrMo4 / AISI 4140). Non-ferromagnetic targets require specialized calibration or a different sensor model.

Technical Specifications Table