Bently Nevada 330104-00-13-90-02-CN 3300 XL Transducer

Bently Nevada 330104-00-13-90-02-CN 3300 XL Retrofit-Ready Proximity Transducer

The Bently Nevada 330104-00-13-90-02-CN is an 8mm proximity transducer engineered for the 3300 XL Series vibration monitoring platform. Designed to deliver reliable non-contact measurement of radial shaft vibration, axial position, and differential expansion in rotating machinery, this transducer is a direct retrofit solution for aging 3300 Series installations and a proven drop-in replacement for discontinued proximity transducer assemblies across petrochemical, power generation, and heavy industrial environments.

When a legacy 3300 Series system reaches end-of-life or spare parts become unavailable, the 330104-00-13-90-02-CN provides a validated upgrade path that preserves existing wiring infrastructure, maintains signal compatibility with the 3300 XL proximitor/driver, and avoids the cost and risk of a full platform migration. The transducer operates on the standard Bently Nevada -24 VDC supply and outputs a linear voltage signal in the range of -1 VDC to -17 VDC, fully compatible with the 3300 XL 8mm System proximitor extension cable assemblies and field wiring already installed in most control cabinets.

Before installation, engineers should verify the following during retrofit planning: power supply capacity at the junction box (minimum 18 mA per channel), terminal block wiring polarity (shield, positive, and negative conductors), gap voltage calibration target (typically -10.0 VDC ±0.2 VDC at the nominal air gap of 1.0 mm), and the proximitor model installed in the rack — typically the 330180 or 330130 series. Confirm that the existing Bently Nevada 3500/42M or 3500/40M monitor card is configured for the correct transducer sensitivity (7.87 V/mm) before energizing the loop.

For systems running on the Bently Nevada 3500 Series rack platform, the 330104-00-13-90-02-CN integrates directly with the 3500/42M Proximitor/Seismic Monitor and the 3500/40M Proximitor Monitor without firmware changes. The transducer’s -CN suffix designates a 9-meter (30-foot) armored extension cable, which is compatible with the standard 330130-080-00-00 proximitor and the 330180-X1-05 proximitor/driver used in most 3300 XL field installations. If the existing extension cable is a different length, verify that the total system cable length (transducer + extension) does not exceed the rated system length to maintain calibration accuracy.

In retrofit scenarios involving communication protocol migration — for example, transitioning from a legacy Modbus RTU-based DCS interface to a FOUNDATION Fieldbus or OPC-UA architecture — the 330104-00-13-90-02-CN remains on the analog signal side of the measurement chain and is unaffected by protocol changes at the monitor or DCS level. The 3500 rack’s communication gateway module (such as the 3500/92 Communication Gateway) handles protocol translation independently, allowing the transducer and proximitor assembly to remain in service during a phased DCS migration.

For control cabinet upgrades involving I/O expansion, the 330104-00-13-90-02-CN is commonly deployed alongside the Bently Nevada 3500/20 Power Supply module, the 3500/15 Power Supply, and the 3500/22M Transient Data Interface to support expanded channel counts without replacing the full rack. When upgrading from a 3300 Series rack to a 3500 Series rack, the 3500/01 Rack Interface Module and 3500/05 System Display and Reset Module are typically required to complete the rack assembly. Engineers should also confirm HMI screen tag assignments in the plant DCS or SCADA system — particularly for vibration trend displays and alarm setpoints — to ensure continuity of operator visibility during and after the cutover.

Field commissioning of the 330104-00-13-90-02-CN follows the standard Bently Nevada gap-setting procedure: install the transducer in the bracket, connect the extension cable to the proximitor, apply power, and adjust the air gap until the DC output reads the target gap voltage. Use a calibrated digital voltmeter at the proximitor output terminals. Record the as-found and as-left gap voltages in the maintenance log. Confirm that the 3500 monitor card displays a valid OK status and that vibration readings are within expected baseline range before returning the machine to service.

All units supplied by SMARTNEXMSK are sourced from verified industrial supply channels, individually inspected prior to shipment, and covered by a 12-month warranty against manufacturing defects. In-stock units are available for same-week dispatch to minimize unplanned downtime during emergency replacement scenarios. We maintain buffer inventory of the 330104-00-13-90-02-CN and related 3300 XL system components to support both planned turnaround maintenance and urgent breakdown recovery.

Upgrade Compatibility Table

Retrofit Planning for Existing Automation Systems

A successful retrofit of the 330104-00-13-90-02-CN into an existing automation system begins with a thorough audit of the control cabinet. Identify the current proximitor model — most legacy installations use the 330130-080-00-00 or the 330180-X1-05 — and confirm that the junction box terminal block wiring matches the Bently Nevada standard three-wire configuration (shield, positive, negative). Check the power supply module, typically the Bently Nevada 3500/15 or 3500/20, for available current headroom; each 8mm transducer channel draws approximately 18 mA, and adding channels to an existing rack requires verifying that the power budget is not exceeded.

For plants upgrading from a 3300 Series rack to a 3500 Series rack, the migration typically involves installing the 3500/01 Rack Interface Module, the 3500/05 System Display and Reset Module, and the appropriate monitor cards (3500/42M for proximity/seismic, 3500/40M for proximity only). The 330104-00-13-90-02-CN transducer and its extension cable can be reused directly in the new rack without modification, provided the total cable length is within specification. The 3500/22M Transient Data Interface is recommended for plants that require waveform capture and dynamic data during the commissioning phase or for ongoing condition monitoring.

In I/O expansion projects, the 330104-00-13-90-02-CN is frequently deployed alongside additional Bently Nevada 3500/40M or 3500/42M monitor cards to increase the number of monitored measurement points on a single machine train. The 3500 rack’s modular architecture supports up to 14 monitor card slots, allowing incremental expansion without replacing the rack chassis or the 3500/92 Communication Gateway. This modularity is particularly valuable in phased upgrade programs where budget constraints require spreading the investment across multiple maintenance windows.

When the retrofit involves a DCS migration — for example, moving from a legacy Honeywell TDC 3000 or Yokogawa CENTUM CS 3000 to a modern DCS platform — the 330104-00-13-90-02-CN remains on the field instrument side and is unaffected by changes to the control layer. The 3500/92 Communication Gateway handles the interface between the Bently Nevada rack and the DCS, supporting Modbus TCP, OPC-DA, and other standard protocols. HMI screen updates, alarm rationalization, and tag database migration are the primary engineering tasks at the DCS level; the transducer and proximitor assembly require no changes.

Programming cable compatibility should also be confirmed during retrofit planning. The Bently Nevada 3500 rack is configured using the System 1 software platform via a standard RS-232 or USB-to-serial programming cable. Ensure that the plant’s engineering workstation has the correct version of System 1 installed and that the rack’s configuration file is backed up before any hardware changes are made. This protects the existing alarm setpoints, danger setpoints, and OK relay logic from accidental overwrite during the retrofit.

Downtime Control During System Migration

Minimizing unplanned downtime is the primary operational constraint in any proximity transducer retrofit. For the 330104-00-13-90-02-CN, the recommended approach is a pre-staged replacement: bench-test the new transducer and extension cable assembly against a calibrated proximitor before the maintenance window begins, confirm the gap voltage output is within specification, and prepare all terminal block labels and wiring documentation in advance.

During the cutover, follow a channel-by-channel replacement sequence rather than replacing all transducers simultaneously. This preserves partial monitoring capability on the machine train and allows the control room operator to maintain visibility of at least some vibration channels throughout the maintenance window. If the plant’s safety instrumented system (SIS) is interlocked with the vibration monitor, coordinate with the SIS engineer to place the affected channels in bypass mode before disconnecting the transducer, and restore the bypass only after the new transducer has been calibrated and the monitor card shows an OK status.

For systems where the 3500 rack communicates with the DCS via the 3500/92 Communication Gateway, verify that the DCS operator station continues to receive valid data from the unaffected channels during the replacement. If the gateway is configured for rack-level communication, a single channel replacement will not interrupt data flow to the DCS. Document the as-found gap voltage, the as-left gap voltage, and the monitor card OK status for each replaced channel in the plant’s maintenance management system (CMMS) before closing the work order.

SMARTNEXMSK maintains in-stock inventory of the 330104-00-13-90-02-CN and related 3300 XL system components specifically to support emergency breakdown scenarios. Same-week dispatch is available for in-stock units, and all units are pre-inspected and tested prior to shipment to eliminate the risk of receiving a defective part during a time-critical outage. The 12-month warranty covers manufacturing defects from the date of shipment, providing additional assurance for both planned turnaround maintenance and emergency replacement programs.

Retrofit Support FAQ

Q: Is the 330104-00-13-90-02-CN a direct replacement for the original Bently Nevada part?
A: Yes. The 330104-00-13-90-02-CN is a direct OEM-equivalent replacement for the original Bently Nevada 330104-00-13-90-02-CN proximity transducer assembly. It is compatible with the 3300 XL 8mm System proximitor and extension cable assemblies and can be installed without modification to existing wiring or bracket hardware.

Q: What wiring checks are required before installing the replacement transducer?
A: Verify the three-wire terminal block configuration (shield, positive, negative) at the junction box, confirm the power supply module provides -24 VDC with sufficient current headroom (minimum 18 mA per channel), and check that the extension cable length is within the rated system length for the installed proximitor model. Disconnect power before making any wiring changes.

Q: How do I confirm compatibility with my existing 3500 Series monitor card?
A: The 330104-00-13-90-02-CN is compatible with the 3500/42M Proximitor/Seismic Monitor and the 3500/40M Proximitor Monitor. Confirm that the monitor card is configured for 8mm transducer sensitivity (7.87 V/mm) in the System 1 configuration software. No firmware update is required for standard 3300 XL 8mm system transducers.

Q: What does the 12-month warranty cover, and what is the process for a warranty claim?
A: The 12-month warranty covers manufacturing defects from the date of shipment. It does not cover damage resulting from incorrect installation, improper gap setting, or operation outside the rated supply voltage range. To initiate a warranty claim, contact SMARTNEXMSK at sales@smartnexmsk.com with the order number, a description of the defect, and photographic evidence of the issue. Replacement units are dispatched upon claim approval.

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