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        PR6423/002-131 CON021

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        1001 reviews ｜ Need a Specific Revision?
        The Emerson PR6423/002-131 CON021 is a non-contact eddy current displacement transducer designed for precise measurement of shaft position, vibration, and eccentricity. Its radiation-resistant construction makes it ideal for Zone 1 nuclear applications, turbomachinery, and critical pump or motor monitoring.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
        Shipping Mode
        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for PR6423/002-131 CON021

        • Manufacturer:
          Emerson
        • Part Number:
          PR6423/002-131 CON021
        • Product Family:
          Epro
        • Sleeve Thread:
          M10 x 1
        • Armored cable:
          Without
        • Sleeve length (+9.0 mm (.35 in) = total length):
          45 mm (1.77 in)
        • Adapter plug at 1 m (3.28 ft):
          Without
        • Total cable length:
          8 m (26.2 ft)
        • Cable end:
          Blunt cut cable end for converter
        • Operating temperature range:
          -35 to +180˚ C (-31 to 365˚ F)
        • Temperature range for storage:
          -40 to +70˚ C (-40 to 158˚ F)
        • Vibration and shock nominal:
          5 g at 60 Hz
        • Sensor material:
          Stainless steel with special EPDM o-ring sealing and cable isolation with PVC The non-electrical part of the adapter plug is constructed with PEEK.
        • Weight:
          0.24 kg
        • Estimated shipping dimensions:
          16x15x2cm
        • Tariff Code:
          8211930000
        • 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 Connection Application Safety & Compliance

        Features:

        • Non-Contact Shaft Displacement And Vibration Measurement
        • Radioactive Radiation Resistant For Zone 1 Nuclear Applications
        • Wide Operating Temperature And Vibration Tolerance For Harsh Industrial Environments
        The Emerson PR6423/002-131 CON021 Eddy Current Displacement Transducer provides precise monitoring of shaft motion and position in challenging industrial and nuclear environments. Its non-contact design ensures accurate measurement of axial and radial displacement, vibration, and eccentricity, even in sleeve-bearing machines where traditional case-mounted sensors fail.

        Constructed from stainless steel, EPDM, PVC, and PEEK, the PR6423/002-131 CON021 withstands high temperatures, vibration, and radiation, ensuring reliable long-term performance. With flexible installation via an 8-meter cable and compatibility with various CON series converters, it can be integrated into turbomachinery, reactor pumps, and motors for continuous monitoring.

        By using the PR6423/002-131 CON021, operators achieve enhanced system reliability, early detection of mechanical issues, and improved safety. Its ability to measure shaft vibration, eccentricity, thrust, and valve position makes it a versatile solution for industrial maintenance and monitoring programs.

        The PR6423/002-131 CON021 Emerson Eddy Current Displacement Transducer may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Emerson PR6423/002-131 CON021 Eddy Current Displacement Transducer 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.
        Emerson PR6423/002-131 CON021 Eddy Current Displacement Transducer Specs

        General

        • Manufacturer Emerson
        • Model PR6423/002-131 CON021
        • Condition New Original ready stock
        • Product Family PR6423/10R-131 CON021,PR6423/013-110 CON021,PR6423/011-100 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.
        • Split Design: The sensor probe connects to a preamplifier (driver, such as CON021) via a high-frequency cable. The preamplifier converts electromagnetic field changes into a voltage signal proportional to distance.
        • Three-Wire Wiring: Typically uses a three-wire output (-24V DC power, common terminal COM, signal output SIG), with a standard output sensitivity of 8 mV/µm.
        • Connector Specifications (CON021): Equipped with LEC-Type or Lemo sealed plugs, featuring a waterproof and oil-resistant design to ensure stable signal transmission within harsh bearing housings.
        • Coaxial Cable Matching: Requires matching with extension cables of specific lengths (e.g., 5 meters or 10 meters). Variations in cable length directly affect sensor linearity calibration.
        • Axial Displacement Monitoring: Measures the longitudinal movement of the shaft of high-power steam turbines to prevent collisions between the rotor and stator.
        • Radial Vibration Measurement: By vertically mounting two probes (X-Y axis) on the bearing housing, the track motion characteristics of the shaft center are captured in real time.
        • Speed ​​and Zero Speed ​​Monitoring: Monitors rotor tooth disk signals to determine whether the unit has reached the excitation speed or has completely stopped (turning gear state).
        • Eccentricity measurement: Monitors the shaft bending condition of the unit during hot or cold start-up.
        • Hazardous Area Certification: Complies with ATEX/IECEx explosion-proof certification, allowing installation in Zone 0 and Zone 1 explosive gas environments such as oil and gas plants.
        • SIL Safety Level: Designed to meet SIL 2 integrity requirements, suitable for emergency protection systems of critical rotating machinery (e.g., shutdown due to overspeed or excessive vibration).
        • Electromagnetic Compatibility (EMC): Complies with EN 61326-1 standard, effectively resisting electromagnetic interference generated by high-power motors or frequency converters, preventing false alarms caused by signal glitches.
        • Environmental Protection Level: The probe section typically reaches IP68, and the preamplifier section is IP65/67, capable of long-term immersion in lubricating oil or exposure to steam spray.
        View as PDF
        Description
        The Emerson PR6423/002-131 CON021 Eddy Current Displacement Transducer is engineered to provide accurate, non-contact measurement of axial and radial shaft displacement, vibration, and eccentricity. By directly monitoring the rotor or shaft through or inside the bearing, the sensor overcomes the limitations of sleeve-bearing machines, where oil films dampen vibration and mask movement.

        Constructed from stainless steel with a special EPDM o-ring sealing, the PR6423/002-131 CON021 offers robust environmental protection, while its PEEK and PVC components ensure chemical and radiation resistance. The transducer operates reliably over a wide temperature range from -35°C to +180°C and withstands vibration and shock up to 5 g at 60 Hz, making it suitable for high-demand industrial and nuclear applications.

        The sensor is supplied with a 45 mm sleeve length and a blunt-cut cable end for direct connection to compatible converters such as CON 011/91, 021/91, and 041/91, forming a complete measurement system. Its total cable length of 8 meters provides flexibility in installation for various machinery setups, including turbomachinery, reactor coolant pumps, motors, fans, and blowers.

        Designed according to DIN 45670, ISO 10817-1, and API 670 standards, the PR6423/002-131 CON021 ensures compliance with international guidelines for vibration and displacement monitoring. Its ability to measure shaft vibration, axial displacement, differential expansion, valve position, and air gaps makes it a versatile solution for engineers in nuclear, power generation, and heavy industrial sectors.

        By employing the Emerson PR6423/002-131 CON021, operators gain high-fidelity monitoring of critical shaft movements, enabling preventive maintenance, early detection of imbalance or misalignment, and improved operational safety in sensitive machinery environments.
        Alternative Names
        PR6423/000-010 CON021 PR6423/002-030 CON021 PR6423/003-030 CON021 PR6423/010-130 CON021
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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.
        VIEW ALL FAQS
        How does the sensor perform in nuclear environments?
        The PR6423/002-131 CON021 is radioactive radiation resistant and certified for Zone 1, making it suitable for critical nuclear installations.
        What temperature ranges can the transducer handle?
        It operates from -35°C to +180°C and can be stored between -40°C and +70°C, ensuring durability in extreme conditions.
        What materials are used in the construction of the PR6423/002-131 CON021?
        The sensor uses stainless steel, EPDM o-rings, PVC cable isolation, and PEEK for non-electrical parts, providing chemical, mechanical, and radiation resistance.
        What applications is the PR6423/002-131 CON021 suitable for?
        It is ideal for turbomachinery, reactor coolant pumps, motors, fans, blowers, and other critical industrial systems requiring precise shaft displacement and vibration monitoring.

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