EPRO CON021+PR6423/01B-030-CN Eddy Current Measurement System

Product Summary

The EPRO CON021 + PR6423/01B-030-CN is a precision eddy current measurement system engineered for high-integrity turbomachinery monitoring. It delivers accurate non-contact measurement of shaft vibration, displacement, and eccentricity across turbines, compressors, pumps, and gearboxes. The system combines the fast-response CON021 signal converter with the rugged PR6423 8 mm probe, ensuring dependable performance in harsh industrial environments. Moreover, its stability and noise immunity support consistent operation in plants where reliability is essential.

​Functional Highlights

The system offers rapid signal processing that supports detailed vibration diagnostics in real time. Additionally, its modular design simplifies installation and reduces service downtime during scheduled maintenance. The probe’s wide temperature tolerance ensures dependable measurements near high-temperature bearing housings. In addition, the converter’s broad frequency response enables precise capture of dynamic shaft behavior during transient and steady-state conditions. These features collectively support early detection of misalignment, rubs, and rotor instabilities.

Technical Specifications

PR6423/01B-030-CN Eddy Current Probe

• Probe Diameter: 8 mm
• Cable Length: 3 m integrated cable
• Linear Measurement Range: ±2 mm (80 mils)
• Initial Gap Setting: 0.5 mm (20 mils)
• Scale Factor (ISF): 8 V/mm (203.2 mV/mil) ±5%
• Linearity (DSL): ±0.025 mm (±1 mil)
• Minimum Shaft Diameter: 25 mm (0.79 in)
• Target Material: Ferromagnetic steel (42CrMo4 / AISI 4140)
• Operating Temperature: -35 °C to +180 °C
• Storage Temperature: -40 °C to +200 °C
• Protection Class: IP66
• Weight: 0.22 kg

CON021 Signal Converter

• Frequency Response (-3 dB): 0–20,000 Hz
• Rise Time: <15 μs
• Operating Temperature: -30 °C to +100 °C
• Shock & Vibration Resistance: 5 g @ 60 Hz
• Protection Class: IP20
• Supply Voltage: -21 V to -32 V
• Housing Material: LMgSi 0.5 F22
• Weight: 120 g
• Mounting: 4 × M5×20 screws
• Sensor Connection: Self-locking Lemo-P connector

Typical Applications / System Integration

This system supports continuous condition monitoring of rotating machinery in power generation, petrochemical, and heavy industrial facilities. For instance, many operators deploy the probe near bearing journals to capture precise radial displacement during startup sequences. Moreover, its fast dynamic response makes it suitable for high-speed compressors that demand early detection of unbalance or rotor instability. Integration with EPRO or Emerson monitoring racks allows plants to streamline protection, trending, and diagnostic workflows.

Support & Maintenance

Routine calibration is straightforward because the converter maintains stable scaling across its full operating range. Furthermore, both components are built with robust materials that resist thermal stress and contamination. This increases service life and helps maintenance teams reduce unexpected downtime. Spare parts are readily available through Emerson’s global supply network, ensuring consistent long-term support.

FAQ

Q1: What machinery types benefit most from the CON021 + PR6423 system? The system is ideal for turbines, compressors, pumps, and gearboxes that require precise non-contact vibration and displacement monitoring.

Q2: Can the probe operate in high-temperature zones near bearings? Yes, the PR6423 probe tolerates temperatures up to 180 °C, allowing stable operation in demanding thermal environments.

Q3: Does the converter require frequent recalibration? No, the CON021 offers stable scaling, so recalibration is typically only needed during major overhauls.

Q4: How is the probe connected to the converter? A self-locking Lemo-P connector ensures secure, vibration-resistant connection between the probe and converter.

Q5: Is the system compatible with existing EPRO racks? Yes, it integrates seamlessly with standard Emerson/EPRO protection and condition monitoring platforms.