Epro PR6426/010-010 CON021 Eddy Current Sensor – Critical Spare for PR6426 Series Vibration Monitoring

Technical Dossier

Product Details And Specifications

Epro PR6426/010-010 CON021 Eddy Current Sensor – Critical Spare for PR6426 Series Vibration Monitoring

Technical Specifications

Note: Electrical parameters not listed above have not been independently verified by DriveKNMS. Refer to the original Epro datasheet for complete specifications. DriveKNMS does not fabricate or estimate parameters.

Solving the Discontinued Hardware Crisis

The PR6426 sensor series occupies a specific and difficult-to-substitute role in legacy vibration monitoring architectures. These sensors are wired into the signal conditioning chain of the CON021 converter, which in turn feeds the MMS6000 or A6500 monitoring rack. The entire chain is calibrated as a system. Substituting a sensor from a different manufacturer or a different Epro sub-series without recalibrating the full chain introduces measurement error — an unacceptable risk in API 670-governed machinery protection applications.

Condition & Reliability Assurance

Every PR6426/010-010 CON021 unit processed by DriveKNMS passes a structured 5-step inspection protocol before it is offered for sale:

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

Step 2 — Housing and Thread Inspection: The sensor body is checked for mechanical damage, thread condition on the mounting tip, and any evidence of chemical exposure or heat stress from the installation environment.

Step 3 — Signal Linearity Verification: The sensor is bench-tested with the CON021 converter to confirm that output signal linearity falls within the expected range across the measurement gap. Units that fail linearity are quarantined and not sold.

Step 4 — CON021 Converter Functional Test: The converter module is powered and tested independently to confirm correct 4–20 mA output behavior, power consumption within specification, and absence of internal fault conditions.

Step 5 — Firmware and Calibration Record Review: Where documentation is available, calibration records and firmware version data are reviewed and included with the shipment. Units without traceable documentation are clearly identified as such prior to sale.

Key Features for System Maintenance

Long-term spare parts strategy recommendation: facilities with more than three machinery trains using PR6426-series sensors should maintain a minimum of two sensor-converter sets as on-site cold spares. The cost of holding two units is negligible relative to the cost of a single unplanned outage caused by sensor failure with no spare available.

Q: How should facilities plan long-term spare parts inventory for PR6426-series components?
A: Given tightening OEM supply, facilities should treat PR6426-series sensors and CON021 converters as strategic spares. A minimum 2-unit buffer per critical machinery train is recommended. DriveKNMS can support blanket order arrangements for facilities requiring multi-unit procurement over a defined period.