Bently Nevada 3300 Series Modules

Technical Dossier

Product Details And Specifications

Bently Nevada 3300 Series: Comprehensive Module Range and Technical Overview

The Bently Nevada 3300 Series represents one of the most widely deployed eddy-current proximity transducer systems in global heavy industry. Engineered for continuous, non-contact measurement of shaft radial vibration, axial position, and differential expansion, this series has accumulated decades of field installation across petrochemical refineries, nuclear power stations, offshore platforms, LNG terminals, and large-scale rotating machinery facilities. Its modular architecture—comprising probes, extension cables, and signal conditioning drivers—has made it the de facto standard for API 670-compliant machinery protection systems. The 3300 Series is routinely specified by OEMs and end-users operating steam turbines, gas compressors, centrifugal pumps, and large induction motors where continuous vibration monitoring is a regulatory or operational requirement. DriveKNMS maintains an active inventory of both current-production and end-of-life 3300 Series components to support long-term plant maintenance programs.

The Evolution of 3300 Series Architecture

The 3300 Series was introduced by Bently Nevada (now a Baker Hughes company) as a successor to earlier 7200 and 3000 Series transducer systems. The core design philosophy centered on a three-component eddy-current measurement chain: a proximity probe tip, a coaxial extension cable, and an oscillator-demodulator (driver). This triaxial architecture allowed field replacement of individual components without disturbing the full measurement loop—a critical advantage in continuous-process industries where unplanned downtime carries significant financial penalties.

Early 3300 Series variants operated on a standard 5-meter system length (probe + extension cable combined), with the driver providing a buffered output voltage proportional to the gap between probe tip and target material. As industrial control systems evolved from analog panel instruments to distributed control systems (DCS) and safety instrumented systems (SIS), Bently Nevada expanded the 3300 Series to include drivers with 4–20 mA current outputs, HART communication capability, and direct integration with the System 1 condition monitoring platform. The introduction of the 3300 XL series marked a significant architectural refinement, offering extended temperature ratings, improved EMI immunity, and compatibility with both standard and reverse-mount installation configurations. Facilities operating legacy 3300 Series hardware alongside newer 3500 Series rack-based monitors must account for signal conditioning compatibility, as the two series use different driver output conventions and connector standards. Cross-series migration typically requires recalibration of gap voltage setpoints and alarm thresholds within the connected monitoring system.

3300 Series Full Catalog & Functionalities (SKU List)

The following SKUs represent the core components of the Bently Nevada 3300 Series. Each entry is classified by functional role within the measurement chain.

Proximity Probes

• 330101-00-06-10-02-00: 5mm proximity probe, 6-inch armored cable, standard tip, 200 mil range
• 330103-00-06-10-02-00: 8mm proximity probe, 6-inch cable, extended temperature, 200 mil range
• 330104-00-06-10-02-00: 8mm proximity probe, 6-inch cable, reverse-mount configuration, 200 mil range
• 330105-02-12-10-02-00: 5mm proximity probe, 12-inch armored cable, standard tip, 200 mil range
• 330130-080-01-00: 3300 XL 8mm proximity probe, 80cm integral cable, standard mount
• 330180-X1-05: 3300 XL 5mm proximity probe, 5-meter integral cable, high-temperature rated

Extension Cables

• 330130-045-00-00: 3300 Series extension cable, 4.5-meter, standard coaxial, armored jacket
• 330130-080-00-00: 3300 Series extension cable, 8-meter, standard coaxial, armored jacket
• 330130-045-01-00: 3300 XL extension cable, 4.5-meter, low-noise, high-flex construction
• 330130-080-01-00: 3300 XL extension cable, 8-meter, low-noise, high-flex construction

Oscillator-Demodulators (Drivers)

• 330180-51-05: 3300 Series driver, 5-meter system, voltage output, DIN rail mount
• 330180-51-08: 3300 Series driver, 8-meter system, voltage output, DIN rail mount
• 330180-X1-05: 3300 XL driver, 5-meter system, 4–20 mA output, HART-compatible
• 330180-X1-08: 3300 XL driver, 8-meter system, 4–20 mA output, HART-compatible

Housing Assemblies & Accessories

• 32000-28-10-00-075-02-02: Proximity probe housing assembly, 0.75-inch NPT, standard stainless steel, field-replaceable
• 330100-00-06-10-02-00: Probe mounting bracket assembly, adjustable radial positioning, carbon steel
• 330930-00-05: Proximitor sensor, 5-meter system, panel-mount enclosure, IP65 rated

Sourcing Hard-to-Find & Obsolete 3300 Series Parts

Several sub-variants within the 3300 Series have reached end-of-production status as Baker Hughes has consolidated its transducer portfolio around the 3300 XL and 3500 Series platforms. However, the installed base of legacy 3300 Series hardware in operating plants remains substantial. Facilities running continuous processes—particularly those subject to API 670 or IEC 61511 compliance requirements—cannot simply decommission monitoring hardware without regulatory review, making access to obsolete spare parts a critical operational need.

DriveKNMS specializes in lifecycle extension support for the Bently Nevada 3300 Series. Our sourcing network covers new-old-stock (NOS) components, factory-refurbished units, and tested-serviceable parts for discontinued probe, cable, and driver configurations. All sourced components undergo functional verification against original Bently Nevada calibration specifications before shipment. For facilities managing multi-year maintenance contracts, DriveKNMS can provide consignment inventory arrangements and scheduled delivery programs to ensure parts availability aligns with planned outage windows.

Quality Control for the 3300 Series Range

The 3300 Series measurement chain is sensitive to impedance mismatches between probe, extension cable, and driver. A probe from one system length paired with a driver calibrated for a different length will produce systematic gap voltage errors that may not be immediately apparent during commissioning but will cause drift in vibration alarm setpoints over time. DriveKNMS applies a structured verification protocol to all 3300 Series components prior to dispatch.

Each proximity probe is tested for tip inductance and resonant frequency against the published Bently Nevada specification for its nominal size (5mm or 8mm). Extension cables are verified for characteristic impedance, shield continuity, and insulation resistance. Driver units are bench-tested across the full gap range (0–200 mil or 0–400 mil depending on variant) with a calibrated target material (AISI 4140 steel) to confirm output linearity, scale factor (200 mV/mil ±1%), and bias voltage at mid-range gap. System-level testing is performed by assembling matched probe, cable, and driver sets and verifying end-to-end output against the Bently Nevada calibration curve. Components that do not meet specification are quarantined and not offered for sale. Test records are retained and available to customers on request.

For sourcing inquiries, technical specifications, or bulk order requests for Bently Nevada 3300 Series components, contact DriveKNMS through the following channels:

• Email: [email protected]
• WhatsApp: +86 18359293191
• Web: driveknms.com