Epro PR6424/000-010 Eddy Current Proximity Probe

Product Overview

The PR6424/000-010 is a compact eddy current proximity probe developed by EPRO (Emerson) for high-resolution shaft displacement and vibration monitoring. Designed for tight installation environments, it is commonly used in rotating machinery diagnostics where space constraints and measurement accuracy are both critical.

This probe is typically deployed in turbine systems, compressors, pumps, and gearbox assemblies, working in conjunction with EPRO CON011 or CON021 signal converters for complete measurement chains.

Technical Specifications

Model: PR6424/000-010
Manufacturer: EPRO (Emerson)
Sensor Type: Eddy Current Displacement / Proximity Probe
Country of Origin: Germany

Measurement Characteristics

• Probe Diameter: 5 mm sensing tip

• Linear Measurement Range: approximately 1.2 mm (system dependent with matched converter)

• Nominal Air Gap: ~0.5 mm installation clearance

• Sensitivity: ~8 V/mm (when paired with CON011/CON021 systems)

• Linearity Error: ±0.025 mm within calibrated operating window (0–45 °C reference)

• Minimum Shaft Diameter Requirement: ≥15 mm

• Target Material: Ferromagnetic steel (e.g., AISI 4140 / 42CrMo4 equivalent)

Mechanical Construction

• Housing Material: Stainless steel, hermetically sealed body

• Cable Type: Integrated shielded extension cable (standard ~1 m, configurable lengths available)

• Compact probe geometry optimized for restricted mounting zones

• High mechanical rigidity for stable signal output under vibration load

Environmental Performance

• Operating Temperature Range: −35 °C to +180 °C

• Protection Class: IP66 (dust-tight, resistant to high-pressure water jets)

• Standard Compliance: IEC 60529 environmental sealing standard

• Designed for continuous operation in high-temperature turbine housings

System Integration

• Fully compatible with EPRO CON011 / CON021 eddy current signal converters

• Requires matched calibration between probe and driver electronics

• Extension cable and converter pairing directly affect sensitivity and scaling accuracy

• Recommended installation with rigid mounting to ensure signal stability

Application Areas

• Gas and steam turbine shaft vibration monitoring

• Compressor radial displacement and clearance measurement

• Pump shaft eccentricity detection

• Gearbox bearing condition monitoring

• Small shaft machinery alignment and position tracking

Engineering Notes

• Optimized for small shaft systems where standard 8 mm probes cannot be installed

• Measurement range is limited and intended for precision monitoring rather than large displacement detection

• Accurate calibration depends on correct converter pairing and stable mounting conditions

• Performance stability is maintained within specified temperature band (0–45 °C calibration reference)

FAQ

Q1: Can this probe operate without a signal converter?
No. It must be used with an EPRO-compatible eddy current converter such as CON011 or CON021.

Q2: Is it suitable for very small rotating shafts?
Yes, it is designed for shafts as small as 15 mm in diameter.

Q3: Does cable length affect accuracy?
Yes. Cable length and type must match system calibration to maintain measurement accuracy.