EPRO PR6424/013-110 CON021 Replacement for PR6424

Product Overview

EPRO PR6424/013-110 CON021 Replacement for PR6424 Series: Smooth Transition & Legacy System Compatibility

The EPRO PR6424/013-110 CON021 is a high-precision eddy current proximity sensor engineered for non-contact shaft vibration measurement in rotating machinery. As legacy vibration monitoring systems age and original OEM stock becomes increasingly scarce, plant engineers and reliability teams face mounting pressure to source verified replacement units that maintain full signal chain compatibility without requiring costly system redesigns. This product page is specifically structured to support engineers planning a drop-in replacement or controlled upgrade from discontinued or end-of-life PR6424 Series sensors within existing Bently Nevada 3300, 3500, or EPRO MMS6000 monitoring architectures.

The PR6424/013-110 CON021 operates as a passive eddy current transducer, generating a voltage output proportional to the gap between the probe tip and the conductive target shaft. It is designed to work in conjunction with the EPRO CON021 extension cable and a compatible driver/oscillator module such as the EPRO PR9268/200-000 or the Bently Nevada 3300 XL 8mm proximity transducer system. When replacing a failed or aging sensor in the field, engineers must verify that the replacement unit shares the same sensitivity factor (typically 7.87 V/mm or 200 mV/mil), the same probe diameter (13 mm), and the same cable length (110 mm active element) to avoid recalibration of the monitoring rack.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful field replacement of the PR6424/013-110 CON021 rarely involves the sensor alone. In most turbine, compressor, or pump monitoring installations, the sensor is one node in a tightly integrated signal chain. During a planned outage or emergency replacement, reliability engineers typically address several adjacent components simultaneously to minimize future downtime risk.

The EPRO CON021 extension cable is the most commonly co-replaced item — cable insulation degradation and connector corrosion are leading causes of false vibration alarms in legacy installations. Pairing a new PR6424/013-110 probe with a fresh CON021 cable ensures the entire signal path from shaft to rack is restored to factory specification. The driver module, often the EPRO PR9268/200-000, should also be bench-tested during the same maintenance window; a marginal driver can mask a sensor fault or introduce offset errors that corrupt vibration trend data.

For sites running Bently Nevada 3500/42M or 3500/40M proximity monitor cards, the PR6424/013-110 CON021 integrates without firmware changes — the monitor card reads the standard -24 VDC bias voltage and 200 mV/mil sensitivity natively. Engineers migrating from older Bently Nevada 3300 series racks to the 3500 platform can use this sensor as a bridging component, maintaining existing probe brackets and wiring while upgrading the monitoring electronics.

In DCS-integrated environments where the vibration signal feeds into an ABB AC800M or Emerson DeltaV controller via a 4–20 mA transmitter, the EPRO MMS6220 vibration transmitter module serves as the signal conditioning interface. Replacing the PR6424 sensor without verifying the MMS6220 configuration (gap voltage setpoint, alarm thresholds) can result in nuisance trips during commissioning. Our technical team can provide pre-shipment configuration guidance upon request.

Sites with multiple measurement planes — axial position plus radial X/Y vibration — often require simultaneous replacement of the PR6424/011-110 CON021 (11 mm variant) or the PR6424/060-110 CON021 (60 mm cable extension variant) alongside the 013-110 unit. Ordering matched sets from the same production batch ensures consistent sensitivity calibration across all measurement channels, which is critical for machinery protection systems operating under API 670 requirements.

For installations where the control cabinet houses both the proximity monitoring rack and a Siemens S7-300 or S7-400 PLC handling process interlocks, the vibration signal is typically hardwired to a digital input module via a relay or threshold switch output from the Bently Nevada rack. Replacing the sensor does not affect this interface, but engineers should verify relay setpoints after sensor swap to confirm alarm levels remain within process safety limits.

Retrofit Guidance FAQ

Q: Can I replace the PR6424/013-110 CON021 without recalibrating the monitoring rack?
A: Yes, provided the replacement unit has the same sensitivity (7.87 V/mm), probe diameter (13 mm), and cable length. Our units are factory-calibrated and shipped with a calibration certificate. No rack recalibration is required for a like-for-like swap.

Q: Is the CON021 connector compatible with all PR6424 Series extension cables?
A: The CON021 is the standard EPRO push-pull connector used across the PR6424 product family. It is mechanically and electrically compatible with all standard EPRO extension cables in the CON0xx series. Verify cable impedance (typically 95 Ω) before installation.

Q: What is the gap voltage range for this sensor?
A: The linear measurement range is typically 0.25 mm to 2.25 mm from the probe tip to the target shaft surface, with a nominal gap of 1.0–1.5 mm recommended for optimal linearity. The driver output at nominal gap is approximately -10 to -12 VDC.

Q: Can this sensor be used with a Bently Nevada 3500/42M monitor card?
A: Yes. The PR6424/013-110 CON021 is fully compatible with the Bently Nevada 3500/42M Proximitor/Seismic Monitor. No hardware modification or firmware update is required.

Q: How do I verify the sensor is functioning correctly after installation?
A: Use a calibrated gap tool or a precision shim to set the probe-to-shaft gap to the nominal value. Measure the driver output voltage with a calibrated multimeter. The reading should fall within the linear range specified in the PR6424 datasheet. Compare the gap voltage reading against the monitoring rack display to confirm signal integrity.

Q: What is the lead time and shipping method?
A: In-stock units ship within 1–3 business days from Xiamen, China via DHL Express or FedEx International Priority. Estimated transit time to most destinations is 3–7 business days. Expedited shipping is available upon request.

Warranty Assurance

Every EPRO PR6424/013-110 CON021 unit supplied by TOPNLMS is covered by a 12-month warranty from the date of shipment. Prior to dispatch, each unit undergoes a multi-point outgoing inspection including visual examination, connector integrity check, and electrical continuity verification. Units that do not meet our quality standards are quarantined and not shipped.

In the event of a warranty claim, TOPNLMS provides a replacement-first policy: a verified replacement unit is dispatched within 5 business days of claim confirmation, minimizing plant downtime. Our after-sales team responds to warranty inquiries within 24 hours on business days. All warranty claims must be accompanied by the original invoice number and a brief description of the fault observed.

For critical spares programs and long-term supply agreements, TOPNLMS offers consignment stock arrangements and priority allocation for repeat customers. Contact our sales team to discuss framework agreements tailored to your plant’s maintenance schedule.

Purchase with confidence: TOPNLMS has supplied industrial automation components to process plants, power generation facilities, and OEM integrators across Asia, the Middle East, and Europe since 2015. Our sourcing network prioritizes traceable, tested inventory to support your machinery protection and condition monitoring programs.