Epro CON021+PR6423/012-010 Eddy Current Proximity Sensor System

Product Description

The PR6423/012-010 + CON021 system from Emerson Epro is a precision non-contact measurement solution designed for continuous monitoring of shaft dynamics in rotating equipment. By pairing an 8 mm eddy-current probe with a dedicated signal conditioner, this system delivers accurate displacement and vibration data under demanding industrial conditions.

The probe detects the relative distance between its sensing tip and a conductive target, while the driver module converts this signal into a stable, linear voltage output suitable for integration with machinery protection systems.

System Composition

PR6423/012-010 Eddy Current Probe
The probe is engineered for reliable operation in high-temperature and high-vibration environments. The specific suffix defines mechanical configuration, cable length, and calibration pairing.

Key capabilities include:

• Radial shaft vibration measurement

• Axial displacement monitoring

• Shaft position tracking

• Gap voltage reference output

CON021 Signal Driver
This module supplies excitation to the probe and processes the returning signal into a standardized analog output. It ensures signal stability, linearity, and compatibility with monitoring platforms.

Technical Specifications

Probe – PR6423/012-010

• Sensor Type: Eddy current, non-contact

• Tip Diameter: 8 mm

• Measuring Range: Typically ±1.0 mm to ±2.0 mm (driver-dependent)

• Sensitivity: 8 mV/µm (system calibrated)

• Frequency Response: Up to 10 kHz

• Linearity Deviation: ≤ ±1% of full scale

• Operating Temperature: –35 °C to +180 °C

• Protection Rating: ≥ IP65

• Housing Material: Stainless steel

Driver – CON021

• Compatible Sensors: PR6422, PR6423, PR6424, PR6426

• Output Signal: Analog voltage proportional to displacement (commonly 0–20 V)

• Supply Voltage: 24 V DC

• Frequency Range: Supports probe bandwidth up to 10 kHz

• Diagnostic Functions:

• Sensor integrity monitoring

• Cable fault detection

• Gap voltage supervision

• Operating Temperature: –20 °C to +70 °C

• Mounting Options: DIN rail or system rack integration

System Performance Characteristics

• Sensitivity: 8 mV/µm

• Linear Measurement Span: Up to ±2 mm

• Bandwidth: Up to 10 kHz

• Measurement Accuracy: ≤ ±1% FS

• Output Type: Linear voltage signal

Application Areas

• Steam and gas turbine monitoring

• Centrifugal compressors and blowers

• Industrial pumps and gear units

• High-speed electric motors and generators

• Petrochemical and power generation equipment

Key Features

• Non-contact measurement eliminates mechanical wear

• High immunity to electromagnetic interference

• Stable performance across wide temperature ranges

• Seamless integration with Epro MMS 6000 and VM600 systems

• Long-term reliability in continuous operation environments

FAQ

Q: Is the probe interchangeable with other PR6423 variants?
A: Mechanical compatibility may be similar, but calibration depends on the matched driver. Always verify system pairing before replacement.

Q: What output does the CON021 provide?
A: It generates a linear voltage proportional to displacement, typically within a 0–20 V range depending on system configuration.

Q: Can this system be used for axial position measurement?
A: Yes, it supports both radial vibration and axial displacement monitoring when properly installed.