Epro CON021+PR6423/001-011-CN Eddy Current System

Product Description

The CON021 + PR6423/001-011-CN assembly from Emerson EPRO is a complete eddy current measurement chain designed for continuous monitoring of shaft vibration and displacement in high-speed rotating equipment. The system integrates an 8 mm proximity probe with a dedicated signal conditioning module to deliver stable, high-resolution output for condition monitoring and protection applications.

It is commonly deployed in turbine trains, compressors, pumps, and gearbox assemblies where real-time rotor dynamics data is required for operational reliability and predictive maintenance strategies.

Technical Specifications

Probe Unit: PR6423/001-011-CN
Model: PR6423/001-011-CN
Type: Eddy Current Proximity Probe
Diameter: 8 mm sensing tip
Linear Measurement Range: 2 mm (nominal 80 mils)
Initial Gap: ~0.5 mm
Sensitivity: 8 V/mm ±5% (reference: 0–45 °C calibration window)
Linearity Accuracy: ±0.025 mm within operating range
Minimum Shaft Size: ≥25 mm
Target Material: Ferromagnetic steel (AISI 4140 / 42CrMo4 or equivalent)
Operating Temperature: −35 °C to +180 °C
Ingress Protection: IP66 (IEC 60529 compliant)

Signal Converter: CON021
Model: CON021
Function: Eddy current signal conditioning and excitation module
Bandwidth: 0–20 kHz (−3 dB)
Response Time: <15 µs rise time
Input Power: −23 V to −32 V DC (standard configuration ranges supported)
Output Signal: −4 V to −20 V or −2 V to −18 V depending on configuration
Housing Material: Die-cast aluminum alloy (GD-AlSi9Cu3)
Protection Class: IP65
Mounting: 4 × M5 screw installation system

System-Level Characteristics

• Combined non-contact measurement chain for vibration and displacement

• Optimized for high-speed rotating machinery diagnostics

• Stable analog signal transmission with matched probe-converter calibration

• Designed for continuous duty in harsh thermal and mechanical environments

Physical Data

• Weight: 0.6 kg

• Overall Installation Footprint: compact modular configuration

• Standard mounting hardware compatible with industrial enclosure systems

Application Scope

• Steam and gas turbine rotor vibration monitoring

• Compressor shaft displacement and clearance measurement

• Pump and gearbox condition monitoring

• Eccentricity and axial position tracking in rotating assemblies

• Predictive maintenance systems for critical rotating assets

Engineering Notes

• Measurement accuracy depends on matched calibration between probe and CON021 module

• Ferromagnetic target material is required for proper eddy current response

• Calibration performance is referenced at 0–45 °C; deviations may occur outside this range

• Proper grounding and shielding are required to minimize electrical noise in field installations

FAQ

Q1: Can the probe operate without the CON021 module?
No. The probe requires a compatible eddy current converter such as CON021 for signal excitation and processing.

Q2: Is the system suitable for high-temperature turbine environments?
Yes, the probe supports up to 180 °C when installed within proper system limits.

Q3: Does cable length affect measurement accuracy?
Yes. Cable type and length must follow Emerson EPRO system calibration requirements.