Epro CON021+PR6423/002-100-CN Eddy Current Proximity Probe System

Product Description

The PR6423/002-100-CN + CON021 measurement chain by Emerson Epro is designed for precise, non-contact monitoring of shaft dynamics in critical rotating equipment. This integrated solution combines an eddy-current probe with a dedicated signal driver to provide reliable displacement and vibration signals for protection and condition monitoring systems.

The probe senses the distance to a conductive shaft surface, while the driver converts this signal into a stable analog output suitable for industrial control and monitoring platforms.

System Overview

PR6423/002-100-CN Proximity Probe
The PR6423/002-100-CN is an 8 mm eddy-current sensor engineered for durability in harsh environments. The CN configuration corresponds to a region-specific version with defined connector and compliance standards.

Typical measurement functions include:

• Shaft radial vibration detection

• Axial displacement measurement

• Rotor position tracking

• Gap voltage monitoring

The suffix defines probe geometry, integrated cable length, and calibration pairing.

CON021 Signal Conditioner
The CON021 module supplies excitation energy to the probe and processes the returning signal into a linear voltage output. It ensures signal accuracy, stability, and compatibility with standard vibration monitoring systems.

Technical Specifications

PR6423/002-100-CN Probe

• Sensor Principle: Eddy current, non-contact

• Tip Diameter: 8 mm

• Measuring Span: ±1.0 mm to ±2.0 mm (depending on driver calibration)

• Sensitivity: 8 mV/µm (system calibrated with CON021)

• Frequency Bandwidth: Up to 10 kHz

• Linearity Error: ≤ ±1% FS

• Resolution: < 1 µm

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

• Protection Class: Minimum IP65

• Housing: Stainless steel construction

• Cable Configuration: Integrated coaxial cable (typically 5 m or 9 m depending on variant)

• Connector Type: Epro standard coaxial interface

• Mounting Method: Threaded or bracket-mounted

CON021 Driver Module

• Function: Probe driver and signal conditioning unit

• Compatible Sensors: PR6422, PR6423, PR6424, PR6426 series

• Supply Voltage: 24 V DC

• Excitation Method: High-frequency oscillator

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

• Sensitivity: 8 mV/µm (with matched probe)

• Frequency Response: Up to 10 kHz

• Measurement Accuracy: ≤ ±1% FS

• Diagnostic Features:

• Sensor integrity monitoring

• Cable break detection

• Gap voltage supervision

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

• Installation: DIN rail or rack-mounted configuration

System Performance

• Sensitivity: 8 mV/µm

• Linear Range: Up to ±2 mm

• Bandwidth: Up to 10 kHz

• Accuracy: ≤ ±1% of full scale

• Output Type: Linear voltage signal

Application Scenarios

• Turbine shaft monitoring in power plants

• Compressor and blower vibration analysis

• High-speed motor and generator protection

• Gearbox condition monitoring

• Petrochemical process machinery

Key Characteristics

• Non-contact sensing eliminates mechanical wear

• Stable output under thermal and electromagnetic stress

• High repeatability and long-term drift stability

• Compatible with MMS 6000, MMS 3000, and VM600 systems

• Modular design simplifies maintenance and replacement

FAQ

Q: What does the CN designation indicate?
A: It refers to a regional configuration, typically including connector standards and compliance specifications tailored for the China market.

Q: Is the system interchangeable with other PR6423 probes?
A: Mechanical compatibility may exist, but calibration must match the driver. Always verify pairing before substitution.

Q: What type of output signal is available?
A: The CON021 provides a linear voltage output proportional to displacement, typically in the 0–20 V range.