Bently Nevada 330104-00-13-50-02-00 Retrofit-Ready Proximity Transducer for 3300 XL Control Systems
The Bently Nevada 330104-00-13-50-02-00 is a high-precision eddy-current proximity transducer engineered for seamless integration into legacy 3300 XL Series vibration monitoring systems. As original equipment reaches end-of-life and spare parts become increasingly scarce, this module provides a verified drop-in replacement path that preserves existing wiring infrastructure, rack geometry, and signal conditioning architecture — minimising engineering rework and unplanned downtime during critical plant turnarounds.
Designed for continuous shaft displacement and radial vibration measurement, the 330104-00-13-50-02-00 operates within the standard Bently Nevada 3300 XL signal chain. It is fully compatible with the 3300 XL 8mm Extension Cable, the 3300 XL Proximitor® Sensor, and the 3300 XL 16-Channel Monitor, allowing maintenance teams to replace a single failed transducer without disturbing the broader monitoring loop. The probe tip geometry, thread specification, and cable connector are identical to the original factory configuration, eliminating the need for custom adapters or field machining.
When planning a retrofit or spare-parts replenishment programme, engineers should verify the following parameters against the existing installation: driver supply voltage (typically −24 VDC from the 3300 XL power supply module), gap voltage at the nominal operating clearance (−10.0 V ± 0.2 V for a 1.0 mm gap), and the sensitivity factor (7.87 V/mm). These values must be confirmed during bench calibration before the transducer is installed in the field. The 3300 XL Proximitor® Sensor paired with this probe should also be inspected for firmware revision compatibility if the monitoring rack has been upgraded to a newer 3500 Series chassis as part of a phased migration.
For sites transitioning from the 3300 XL platform to the Bently Nevada 3500 Series, the 330104-00-13-50-02-00 can serve as an interim solution while the 3500/42M Proximitor I/O Module and associated 3500 rack backplane are being commissioned. This staged approach allows production to continue on the proven 3300 XL architecture while the new 3500 Series Rack Interface Module, 3500/20 Rack Interface Module, and 3500/15 Power Supply Module are installed and verified in parallel. Maintaining the original transducer during this window protects programme logic stored in the 3300 XL monitor and avoids the need to re-enter alarm setpoints, danger thresholds, and OK relay configurations until the full cutover is ready.
All units supplied by SMARTNEXMSK are tested against Bently Nevada factory acceptance criteria prior to shipment. Each 330104-00-13-50-02-00 is verified for static sensitivity, frequency response (DC to 10 kHz), temperature coefficient, and connector integrity. Units are shipped with a calibration record and are covered by a 12-month warranty from the date of delivery. Stock is maintained on-hand to support urgent breakdown orders and planned maintenance windows alike.
Upgrade Compatibility Table
| Parameter | 330104-00-13-50-02-00 (This Unit) | Notes / Retrofit Guidance |
|---|---|---|
| Compatible Monitor | 3300 XL 16-Channel Monitor | Direct replacement; no monitor reconfiguration required |
| Compatible Proximitor® | 3300 XL Proximitor® Sensor | Verify gap voltage after installation |
| Driver Supply Voltage | −24 VDC | Confirm from 3300 XL Power Supply Module output |
| Nominal Gap Voltage | −10.0 V ± 0.2 V @ 1.0 mm | Adjust gap during commissioning |
| Sensitivity | 7.87 V/mm (200 mV/mil) | Match to existing Proximitor® calibration record |
| Probe Thread | M8 × 1.0 | Compatible with standard 3300 XL mounting hardware |
| Cable Length | 5.0 m (integral) | Use 3300 XL 8mm Extension Cable for longer runs |
| Communication Protocol | Analogue (4–20 mA / voltage) | No protocol migration required for 3300 XL; review if migrating to 3500 Series |
| 3500 Series Migration | Interim compatible | Pair with 3500/42M Proximitor I/O Module for phased cutover |
| Warranty | 12 Months | From date of delivery; includes calibration record |
Retrofit Planning for Existing Automation Systems
A successful retrofit begins well before the maintenance window opens. The first step is a full audit of the existing 3300 XL rack, identifying every occupied slot and confirming the revision level of each installed module. In a typical vibration monitoring cabinet, the rack will contain a combination of the 3300 XL Rack Interface Module, one or more 3300 XL 16-Channel Monitor cards, the 3300 XL Power Supply Module, and a set of Proximitor® Sensors mounted externally on the machinery casing. Each Proximitor® is connected to its corresponding 330104-00-13-50-02-00 transducer via a dedicated extension cable routed through the machine’s bearing housing access port.
Before disconnecting any transducer, the maintenance team should capture the current gap voltage reading from the 3300 XL monitor front panel or via the System 1 condition monitoring software. This baseline reading, along with the OK relay status and the current alarm and danger setpoints, should be documented in the work order. When the replacement 330104-00-13-50-02-00 is installed, the gap is re-established by adjusting the probe depth until the Proximitor® output returns to the nominal −10.0 V value. The OK relay on the 3300 XL 16-Channel Monitor will confirm a valid signal before the machine is returned to service.
For sites that have already partially migrated to the Bently Nevada 3500 platform, the 330104-00-13-50-02-00 can coexist with the 3500/42M Proximitor I/O Module in a hybrid rack configuration. In this scenario, the 3500 Series Rack Interface Module handles communication to the plant DCS via the 3500/20 Rack Interface Module’s Modbus TCP or OPC DA gateway, while the legacy 3300 XL channels continue to feed the existing System 1 historian. This dual-path arrangement is particularly valuable during phased upgrades where not all machinery trains can be migrated simultaneously. The 3300 XL Proximitor® Sensor, the 3500/15 Power Supply Module, and the 3500/42M I/O Module must all be confirmed as revision-compatible before the hybrid rack is energised.
Terminal wiring for the 330104-00-13-50-02-00 follows the standard Bently Nevada colour-coded scheme: the coaxial centre conductor carries the transducer signal, the shield is grounded at the Proximitor® end only, and the outer jacket is secured with the supplied cable clamp to prevent mechanical stress on the connector. Any deviation from single-point grounding will introduce noise into the vibration signal and may trigger spurious alarms on the 3300 XL monitor. The 3300 XL 8mm Extension Cable should be inspected for jacket damage and connector corrosion before reuse; replacement cables are available as a separate line item.
Downtime Control During System Migration
Minimising production loss during a transducer replacement or platform migration requires a structured sequence of activities that keeps the control loop active for as long as possible. The recommended approach is to pre-configure the replacement 330104-00-13-50-02-00 on a bench fixture, verify the gap voltage and OK relay status, and then perform a hot-swap during a scheduled low-load period rather than a full plant shutdown.
Where the process cannot tolerate any interruption to vibration monitoring, a temporary bypass relay can be inserted into the 3300 XL monitor’s OK relay circuit to hold the machine-running permissive while the transducer is changed. This bypass must be authorised by the site safety officer and removed immediately after the new transducer is confirmed healthy. The System 1 historian should be set to flag the bypass period so that the data gap is visible in post-maintenance trend analysis.
For migrations to the 3500 Series platform, the cutover sequence should be rehearsed in a factory acceptance test environment using a spare 3500 rack loaded with the target firmware. The 3500/20 Rack Interface Module’s communication configuration — including the Modbus register map or OPC tag list — should be validated against the DCS I/O list before the live cutover. Alarm setpoints, danger thresholds, and time-delay settings from the 3300 XL monitor should be transcribed into the 3500 Series configuration tool and verified by a second engineer before the old rack is de-energised. This parallel verification step is the single most effective measure for preventing nuisance trips and protecting original programme logic during the transition.
Retrofit Support FAQ
Q: Is the 330104-00-13-50-02-00 a direct drop-in replacement for the original Bently Nevada part?
A: Yes. The 330104-00-13-50-02-00 is manufactured to the same dimensional, electrical, and sensitivity specifications as the original Bently Nevada part. It is compatible with the 3300 XL Proximitor® Sensor and 3300 XL 16-Channel Monitor without any modification to the existing wiring or rack configuration.
Q: What pre-shipment testing is performed on each unit?
A: Every 330104-00-13-50-02-00 supplied by SMARTNEXMSK is tested for static sensitivity (7.87 V/mm), frequency response (DC to 10 kHz), OK relay threshold, and connector integrity. A calibration record is included with each shipment. All units carry a 12-month warranty from the date of delivery.
Q: Can this transducer be used with the Bently Nevada 3500 Series monitors?
A: The 330104-00-13-50-02-00 is primarily designed for the 3300 XL platform. It can be used as an interim solution during a phased migration to the 3500 Series when paired with the 3500/42M Proximitor I/O Module. Full compatibility with the 3500 platform should be confirmed with the site’s instrumentation engineer before permanent installation.
Q: What wiring checks are required before commissioning the replacement transducer?
A: Verify single-point grounding of the coaxial shield at the Proximitor® end, inspect the 3300 XL 8mm Extension Cable for jacket damage and connector corrosion, confirm the driver supply voltage is −24 VDC from the 3300 XL Power Supply Module, and adjust the probe gap until the Proximitor® output reads −10.0 V ± 0.2 V. Document the gap voltage and OK relay status in the work order before returning the machine to service.
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