Epro CON021+PR6423/010-000-CN Eddy Current Displacement Sensor System

Product Description

The PR6423/010-000-CN + CON021 from Emerson Epro is a non-contact measurement solution developed for continuous monitoring of shaft behavior in rotating equipment. This system combines an eddy-current proximity probe with a dedicated signal conditioning module to deliver stable and accurate displacement data under demanding industrial conditions.

It is widely implemented in machinery protection systems where precise vibration and position feedback is required for safe and efficient operation.

System Configuration

PR6423/010-000-CN Proximity Probe
The PR6423/010-000-CN is an 8 mm eddy-current sensor designed to withstand elevated temperatures, vibration, and contamination. The CN designation refers to a region-specific configuration, typically including connector and compliance adaptations.

The probe enables:

• Radial shaft vibration monitoring

• Axial displacement measurement

• Rotor position tracking

• Gap voltage reference output

The “010-000” suffix defines probe geometry, calibration compatibility, and cable arrangement, with “000” generally indicating a short or configurable cable option.

CON021 Signal Driver
The CON021 module provides excitation energy to the probe and converts the measured signal into a linear voltage output. It ensures signal conditioning, stability, and compatibility with industrial monitoring platforms.

Technical Specifications

PR6423/010-000-CN Probe

• Measurement Principle: Eddy current, non-contact

• Tip Size: 8 mm

• Measuring Range: ±1.0 mm to ±2.0 mm (dependent on calibration)

• Sensitivity: 8 mV/µm (system calibrated)

• Frequency Response: Up to 10 kHz

• Linearity: ≤ ±1% of full scale

• Resolution: Better than 1 µm

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

• Protection Rating: ≥ IP65

• Housing Material: Stainless steel

• Cable Type: Integrated coaxial cable (short or configurable length)

• Connector: Epro standard coaxial connector

• Installation: Threaded mounting or bracket fixing

CON021 Driver

• Device Type: Signal conditioner for proximity probes

• Supported Probes: PR6422, PR6423, PR6424, PR6426 series

• Power Requirement: 24 V DC

• Excitation: High-frequency oscillator

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

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

• Bandwidth: Up to 10 kHz

• Accuracy: ≤ ±1% FS

• Diagnostic Functions:

• Probe condition monitoring

• Cable fault detection

• Gap voltage supervision

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

• Mounting Options: DIN rail or system rack

System Performance Characteristics

• Sensitivity: 8 mV/µm

• Linear Measurement Range: Up to ±2 mm

• Frequency Bandwidth: Up to 10 kHz

• Accuracy: ≤ ±1% FS

• Output Format: Linear analog voltage

Application Fields

• Steam and gas turbine monitoring systems

• Compressor and blower vibration analysis

• High-speed motor and generator protection

• Gearbox condition monitoring

• Petrochemical and energy sector rotating equipment

Key Advantages

• Non-contact sensing avoids mechanical wear and drift

• High resistance to thermal stress and electromagnetic interference

• Stable output over long operating periods

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

• Flexible installation with modular components

FAQ

Q: What does the “000” cable code represent?
A: It generally indicates a short or customizable cable configuration. Exact length depends on the specific order variant.

Q: Can the CON021 be used with other probe models?
A: Yes, it supports multiple probes in the PR642x series, but calibration must match for accurate measurements.

Q: What type of signal is provided to monitoring systems?
A: A linear voltage output proportional to displacement, typically within a 0–20 V range.