PR6423/018-040 CON021
PR6423/018-040 CON021
PR6423/018-040 CON021
PR6423/018-040 CON021
PR6423/018-040 CON021
PR6423/018-040 CON021
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  • Lifecycle status

    Discontinued / Obsolete by OEM
    Apter Power supplies top-grade EPRO PR6423/018-040 CON021 replacement hardware, offering industrial facilities a trusted source for critical automation components to maintain continuous and efficient plant operations.

PR6423/018-040 CON021

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The EPRO PR6423/018-040 combined with the CON021 Signal Converter is a highly precise, industrial-grade non-contact eddy current displacement sensor system.
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Technical specifications for PR6423/018-040 CON021

  • Manufacturer:
    Emerson
  • Part Number:
    PR6423/018-040 CON021
  • Product Family:
    Epro
  • Product Type:
    Eddy Current Sensor
  • Stock:
    1
  • Sensor Tip Diameter:
    8.0 mm
  • Linear Measuring Range:
    2.0 mm (approx. 80 mils)
  • Nominal Sensitivity:
    8.0 V/mm (approx. 203.2 mV/mil)
  • Frequency Response Range:
    0 Hz to 20,000 Hz (-3 dB)
  • System Cable Length:
    4.0 meters (Integral Cable)
  • Mechanical Configuration Code:
    018 (Specific case thread and length)
  • Sensor Ingress Protection Rating:
    IP66
  • Converter Ingress Protection Rating:
    IP20
  • Weight:
    0.15 kg
  • Estimated shipping dimensions:
    16x15x2cm
  • Tariff Code:
    8537101190
  • Country of origin:
    Germany
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Applications Compatibility & Interoperability Environmental Ratings

Features:

  • Links the PR6423/018-040 Proximity Probe and CON021 Preamplifier to Critical Machinery Monitoring Networks
  • Merges Non-contact Displacement Detection with CON021 Signal Conditioning and Conversion
  • Coordinates with Turbomachinery Protection and Condition Monitoring Systems
The PR6423/018-040 CON021 Eddy Current Sensor operates as a complete non-contact displacement measurement system, providing reliable proximity signals for all rotating machinery within the monitoring loop. It continuously converts changes in shaft surface distance into precise electrical outputs (measurement range 0 to ±1.0 mm up to ±1.5 mm) and conditions these signals through the CON021 preamplifier to support steady state operation of vibration and position monitoring modules. Seamless signal transfer is standard with the CON021, with the PR6423/018-040 system supporting various cable configurations including armored and non-armored variants with self-locking waterproof connectors or flying lead terminations.

The PR6423/018-040 CON021 provides essential sensing functions common to the entire machinery protection system, and is a critical component of the monitoring path, directly affecting the proper, normal operation of the overall condition monitoring system. One PR6423/018-040 probe paired with one CON021 signal converter is required per measurement point depending on the desired monitoring coverage. The CON021 occupies only minimal panel space in the instrument cabinet and is always installed in proximity to the associated monitoring system termination points, with the PR6423/018-040 probe mounted at the designated measurement location near the machine bearing housing.

For precision measurement applications, the PR6423/018-040 CON021 system requires factory-matched calibration between the PR6423/018-040 probe and CON021 preamplifier prior to shipment. In addition to standard signal conversion, the CON021 also performs continuous linearity assurance across its 0 to 20 kHz (-3 dB) frequency response with less than 15 μs rise time. The PR6423/018-040 sensor configuration executes accurate displacement measurement using the pre-calibrated response curve specified in the sensor-converter pairing options. Using this method, the measurement system continually monitors the air gap between the PR6423/018-040 probe tip and rotating target surface. If the system detects that the PR6423/018-040 CON021 output deviates from configured linearity/tolerance levels, it will automatically indicate a calibration fault condition and prompt maintenance personnel to verify the installation air gap.

The PR6423/018-040 CON021 EPRO Eddy Current Sensor may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
EPRO PR6423/018-040 CON021 Eddy Current Sensor Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
EPRO PR6423/018-040 CON021 Eddy Current Sensor Specs

General

  • Manufacturer EPRO
  • Model PR6423/018-040 CON021
  • Condition New Original ready stock
  • Product Family PR6424/012-000 CON011,PR6424/013-130 CON021
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Shaft Vibration: Measures dynamic radial displacement to detect imbalance, misalignment, or looseness.
  • Axial Position: Tracks static rotor movement to prevent stator contact and thrust bearing wear.
  • Eccentricity: Monitors shaft bowing and warping during turbine startup sequences.
  • Speed Sensing: Provides high-frequency trigger pulses for RPM and keyphase timing analysis.
  • Target Equipment: Deployed on steam turbines, gas turbines, turbo-compressors, pumps, and large fans.
  • Driver Module: Calibrated to match the CON021 converter to form a complete measuring chain.
  • Output Standard: Delivers a standard linear analog voltage output proportional to the gap distance.
  • System Monitoring: Connects to Emerson AMS 6500, standard DCS, PLCs, and rack monitoring systems.
  • Legacy Support: Formally managed under the Epro/MHM Emerson portfolio, succeeding the older PR6422 series.
  • Drop-in Replaceability: Fits identical mechanical mounting footprint and thread sizes of standard 8mm proximity probes.
  • Sensor Tip: Built with high-grade PEEK plastic for total resistance to hot lubricating oil.
  • Sensor Temperature: Operates continuously in extreme environments from -35°C to +180°C.
  • Converter Temperature: Rated for industrial control cabinet environments from -30°C to +100°C.
  • Ingress Protection: Probes feature an IP66 rating against fluid ingress and high-pressure splash.
  • Pressure Rating: Sensor tip hermetically sealed to withstand high static pressures inside machine casings.
Description
The EPRO PR6423/018-040 eddy current sensor paired with the CON021 signal converter constitutes a complete non-contact displacement measurement system specifically engineered for critical rotating machinery condition monitoring. This PR6423/018-040 and CON021 combination is designed to address the challenge of accurate, real-time measurement of shaft displacement, radial vibration, eccentricity, rotational speed, and key phasing in high-speed turbomachinery, solving the problem of mechanical failure prevention through continuous proximity sensing without physical contact with the rotating shaft.

The PR6423/018-040 CON021 sensor belongs to the EPRO PR6423 series and offers a measurement range of 0 to ±1.0 mm up to ±1.5 mm when operated with the CON021 preamplifier, making it suitable for medium-to-large shaft monitoring applications. The PR6423/018-040 probe is available with various mounting thread options and cable configurations, including armored or non-armored cables with either self-locking waterproof connectors at the cable end or flying lead terminations, ensuring adaptability to diverse installation environments. The sensor operates reliably across an extreme temperature range from -35°C to +380°C. 

The PR6423/018-040 CON021 is extensively applied in steam turbines, gas turbines, hydro turbines, compressors, pumps, and fans within power generation and process industries. This EPRO PR6423/018-040 CON021 system solves the critical problem of early detection of rotor imbalance, misalignment, bearing wear, and axial thrust anomalies by providing precise non-contact displacement data, thereby preventing catastrophic machinery failures, unplanned downtime, and costly maintenance interruptions in continuous-process industrial environments.

Regarding installation and integration, the PR6423/018-040 sensor and CON021 converter are delivered as a factory-calibrated matched pair, with linearity calibration completed prior to shipment, which significantly simplifies commissioning procedures. During field installation of the PR6423/018-040 CON021 system, operators only need to adjust the air gap between the probe tip and the target surface to establish proper operating clearance, eliminating complex field calibration requirements. The CON021's panel-mount configuration and self-locking Lemo plug connections facilitate straightforward cabinet integration and reliable wiring practices in industrial control enclosures.

Alternative Names
PR6423 018-040 PR6423/010-020-CN CON021 PR6423/010-030 CON021 PR6423/010-040 CON021 PR6423/010-100-CN CON021 PR6423/010-140 CON021
Technical notes
This PR6423/018-040 CON021 system is designed specifically to handle the critical issue of undetected machine wear and micro-vibrations in high-speed rotating machinery before they escalate into catastrophic mechanical failures.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the EPRO PR6423/018-040 CON021 system?
The EPRO PR6423/018-040 CON021 is a non-contact eddy current displacement sensor system from Emerson. It combines an 8mm PR6423 probe with a CON021 signal converter for accurate shaft monitoring.
What problem does the system solve?
The system helps detect bearing wear, shaft misalignment, and thermal expansion before they cause serious equipment failure or downtime.
Where is the PR6423/018-040 CON021 commonly used?
It is widely used in power plants, oil and gas facilities, petrochemical plants, steel mills, and heavy manufacturing industries.
How is the PR6423/018-040 CON021 installed?
The probe is mounted near the target shaft, while the 4-meter cable connects directly to the CON021 signal converter for signal processing.