EPRO CON021+PR9268/602-000 Heavy-Duty Eddy Current Sensor System

Overview

The PR9268/602-000 from EPRO is a heavy-duty, non-contact eddy current sensor designed for high-precision monitoring of large rotating machinery. Paired with the CON021 signal converter, this system delivers reliable shaft vibration, axial displacement, eccentricity, and rotational speed measurements in demanding industrial environments. Ideal for turbines, compressors, pumps, and gearboxes, it ensures compliance with API 670 standards for predictive maintenance and machinery protection.

Key Features

PR9268/602-000 Sensor Probe

• Heavy-duty eddy current sensor optimized for large shafts

• Linear measurement range: 2 mm (≈80 mils)

• Initial air gap: 2.0 mm (≈79 mils)

• Sensitivity (ISF): 8 V/mm ±5% (0–45 °C)

• Linearity (DSL): ±0.025 mm within 0–45 °C

• Minimum shaft diameter: 40 mm

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

• Protection class: IP66

• Target materials: Ferromagnetic steels (42CrMo4 / AISI 4140)

• Mechanical variant “602” tailored for large-scale industrial installations

CON021 Converter Module

• Converts and conditions sensor signals for stable output

• Frequency response: 0–20 kHz (–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

Applications

• Steam and gas turbine shaft vibration monitoring

• Axial displacement measurement in compressors and pumps

• Gearbox vibration detection and fan rotor eccentricity monitoring

• Heavy industrial equipment with large-diameter shafts

Model Comparison / Notes

The PR9268 series offers higher load tolerance and broader measurement capabilities compared to the PR6423–PR6426 series, making it suitable for large shafts and harsh industrial conditions.

FAQ

Q: What shaft sizes are compatible with this sensor?
A: The PR9268/602-000 is optimized for shafts ≥40 mm diameter.

Q: Can this system monitor both vibration and axial displacement simultaneously?
A: Yes, it measures radial vibration, axial displacement, eccentricity, and rotational speed.

Q: What industrial environments is it suited for?
A: Heavy-duty applications in turbines, pumps, compressors, and gearboxes, including high-temperature and high-vibration conditions.