PR6423/010-040+CON021 EPRO Eddy Current Sensor | Emerson

Product Overview

The PR6423/010-040+CON021 is an EPRO eddy current displacement measurement system designed for industrial rotating machinery monitoring. The assembly combines a PR6423/010-040 non-contact eddy current probe with a compatible CON021 signal converter.

Manufactured for demanding industrial measurement applications, the PR6423 sensor family is used to monitor shaft displacement, relative vibration, position, eccentricity, and speed when configured with suitable monitoring equipment.

The probe operates using the eddy current principle, detecting changes in the gap between the sensor tip and a conductive metal target. The CON021 converter conditions the probe signal and supplies an electrical output for compatible machinery monitoring systems.

Typical applications include steam turbines, gas turbines, hydro turbines, centrifugal compressors, industrial pumps, fans, and other critical rotating equipment in power generation, oil and gas, and petrochemical facilities.

Technical Specifications

Parameter	Specification
Product Model	PR6423/010-040+CON021
Brand	EPRO / Emerson
Product Type	Eddy current sensor and signal converter
Probe Model	PR6423/010-040
Converter Model	CON021
Probe Type	Non-contact proximity probe
Probe Diameter	8 mm
Thread Size	M10 × 1, subject to exact configuration
Measurement Principle	Eddy current
Linear Measurement Range	2 mm for the applicable PR6423 configuration
Nominal Sensitivity	8 V/mm
Standard Calibration Target	Ferromagnetic steel, 42CrMo4
Converter Frequency Response	0–20 kHz (-3 dB)
Converter Supply Voltage	-23 to -32 VDC for the -4 to -20 V output configuration
Converter Protection Class	IP20
Typical Applications	Shaft displacement, relative vibration, position, and eccentricity monitoring

Specifications are based on available PR6423 family and CON021 documentation. Verify the exact probe suffix, cable assembly, calibration, output configuration, and installation requirements before ordering.

Key Features and Benefits

1. Non-Contact Eddy Current Technology

The PR6423 probe measures displacement without physical contact with the rotating shaft, helping avoid mechanical wear at the sensing interface during normal operation.

2. Shaft Displacement and Vibration Monitoring

The sensor system can support dynamic shaft displacement measurements and relative vibration monitoring when correctly installed and connected to compatible machinery monitoring equipment.

3. High Dynamic Response

The CON021 converter supports a frequency response of up to 20 kHz at -3 dB, making it suitable for dynamic measurement applications specified by the manufacturer.

4. Industrial Rotating Machinery Applications

The PR6423 family is designed for critical turbomachinery applications, including turbines, compressors, pumps, fans, and gearboxes.

5. Compatible Signal Conditioning

The CON021 converter is designed for compatible EPRO eddy current probes. Matching the probe, cable, converter, and monitoring system is essential for accurate measurement.

Typical Applications

Power Generation

• Steam turbine shaft monitoring
• Gas turbine condition monitoring
• Hydro turbine displacement measurement
• Generator rotor monitoring

Oil and Gas

• Centrifugal compressor monitoring
• Process pump monitoring
• Critical rotating machinery protection
• Refinery and petrochemical equipment monitoring

Industrial Manufacturing

• High-speed rotating machinery
• Fans and blowers
• Gearboxes and drive systems
• Industrial equipment condition monitoring

Working Principle

The PR6423/010-040 probe generates an electromagnetic field near a conductive target. As the distance between the probe and target changes, the electrical characteristics of the sensing circuit change accordingly.

The CON021 signal converter processes the probe response and produces a corresponding electrical output within the calibrated measurement range. A compatible monitoring system can then use the signal to track shaft movement and evaluate machinery operating conditions.

For reliable performance, the installation must account for the target material, initial air gap, probe mounting, cable arrangement, calibration, and converter configuration.

Installation and Compatibility

Before replacing an existing sensor system, verify the following:

• Complete probe model number and suffix
• Probe dimensions and mounting thread
• Cable length, connector type, and cable construction
• Compatibility with the CON021 converter
• Required output range and supply voltage
• Monitoring system input and calibration requirements
• Target material and installation gap

Do not assume that a sensor with a similar model number is a direct replacement. Confirm compatibility with the original equipment documentation.

Frequently Asked Questions

Q1: What is the PR6423/010-040+CON021 used for?

It is an eddy current measurement system for non-contact displacement monitoring in industrial rotating machinery. Depending on the installation, it can support shaft vibration, position, eccentricity, and displacement measurement.

Q2: What is the function of the CON021?

The CON021 is a signal converter that processes signals from compatible EPRO eddy current probes and provides an electrical output for machinery monitoring equipment.

Q3: What is the frequency response of the CON021?

The manufacturer’s CON021 specification lists a frequency range of 0–20 kHz at -3 dB. Actual system performance depends on the connected probe and measurement configuration.

Q4: Which industries use the PR6423 sensor?

Typical applications include power plants, oil and gas facilities, petrochemical processing plants, compressor stations, and industrial manufacturing facilities.

Q5: Can the PR6423/010-040 be replaced with another PR6423 model?

Not automatically. Different suffixes may indicate differences in cable or mechanical configuration. Confirm the full part number, dimensions, cable assembly, calibration, and converter compatibility before replacement.

Q6: What information is needed for a quotation?

Provide the complete model number, required quantity, preferred product condition, delivery destination, and any existing system or cable requirements. This helps the supplier confirm the correct configuration.

 

Our products are widely used in CNC mechanical metallurgy, petroleum and natural gas, and petrochemical industries,Chemical industry, paper and printing, textile printing and dyeing, machinery, electronic manufacturing, automobile manufacturing,Plastic machinery, electricity, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution.The quoted price is not the actual price. Please contact the shopkeeper before placing the order to confirm the price and delivery time!!!

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