Bently Nevada 330905 Series Modules - 330905-00-21-05-02-CN

Technical Dossier

Product Details And Specifications

Bently Nevada 330905 Series: Comprehensive Module Range and Technical Overview

The Bently Nevada 330905 Series NSv Proximity Probes are eddy-current, non-contact displacement transducers engineered for continuous shaft vibration and position monitoring in rotating machinery. Deployed across global heavy industry — including petrochemical refineries, nuclear power stations, LNG processing facilities, and offshore platforms — the 330905 series forms a core sensing layer within Bently Nevada’s 3300 XL and System 1 condition monitoring architectures. These probes operate on the standard Bently Nevada 8 mm eddy-current principle, producing a voltage output linear to the gap between probe tip and target shaft surface. The series is API 670 compliant and is the metric-thread variant counterpart to the 330900 inch-thread family, making it the preferred specification for installations in Europe, Asia-Pacific, and Middle Eastern industrial facilities.

📩 Looking for a specific 330905 model? Send your parts list to: sale@driveknms.com

The Evolution of 330905 Architecture

The 330905 series traces its lineage to Bently Nevada’s original 7200 Series eddy-current probes introduced in the 1970s. The transition to the 3300 XL platform in the 1990s standardized the 8 mm probe body diameter and introduced the NSv (Non-contact, Shaft vibration) designation, which remains the active nomenclature. The 330905 metric series was developed in parallel with the 330900 inch series to address ISO-standard machinery installations. Key architectural milestones include the introduction of the armored cable variant for high-temperature environments, the extension cable system (330130 series) enabling remote driver placement, and the integration of the 3300 XL Proximitor sensor (330180 series) as the signal conditioning module. The 330905 series is currently in the mature/sustaining phase of its lifecycle. Bently Nevada (a Baker Hughes company) continues to manufacture and support these probes, but new installations increasingly specify the Velomitor XA or 3500 Series platform. For existing installations, long-term maintenance support — including new-old-stock (NOS) and recertified units — is available through authorized distributors and specialist suppliers such as DriveKNMS.

330905 Full Catalog & Functionalities (SKU List)

The following SKUs represent the verified, commonly stocked configurations within the 330905 NSv Proximity Probe series. Each part number encodes probe length, cable length, connector type, and temperature rating.

330905-00-21-05-02-CN: 8mm metric probe, 5mm range, 2m armored cable, CN connector, standard temp.
330905-00-21-05-02-00: 8mm metric probe, 5mm range, 2m cable, flying leads, standard temp.
330905-00-21-05-05-00: 8mm metric probe, 5mm range, 5m cable, flying leads, standard temp.
330905-00-21-05-10-00: 8mm metric probe, 5mm range, 10m cable, flying leads, standard temp.
330905-00-21-10-02-CN: 8mm metric probe, 10mm range, 2m armored cable, CN connector.
330905-00-21-10-05-00: 8mm metric probe, 10mm range, 5m cable, flying leads, standard temp.
330905-00-21-10-10-00: 8mm metric probe, 10mm range, 10m cable, flying leads, standard temp.
330905-00-21-05-02-05: 8mm metric probe, 5mm range, 2m cable, high-temperature variant (up to 177°C).
330905-00-21-10-02-05: 8mm metric probe, 10mm range, 2m cable, high-temperature variant (up to 177°C).
330905-00-21-05-05-CN: 8mm metric probe, 5mm range, 5m armored cable, CN connector.
330905-00-21-10-05-CN: 8mm metric probe, 10mm range, 5m armored cable, CN connector.
330905-00-21-05-10-CN: 8mm metric probe, 5mm range, 10m armored cable, CN connector.
330905-00-21-10-10-CN: 8mm metric probe, 10mm range, 10m armored cable, CN connector.
330905-00-21-05-02-T2: 8mm metric probe, 5mm range, 2m cable, ATEX/IECEx Zone 1 certified variant.
330905-00-21-10-02-T2: 8mm metric probe, 10mm range, 2m cable, ATEX/IECEx Zone 1 certified variant.
330905-00-21-05-05-T2: 8mm metric probe, 5mm range, 5m cable, ATEX/IECEx Zone 1 certified variant.
330905-00-21-10-05-T2: 8mm metric probe, 10mm range, 5m cable, ATEX/IECEx Zone 1 certified variant.

Sourcing Hard-to-Find & Obsolete 330905 Series Parts

DriveKNMS maintains a dedicated inventory program for the Bently Nevada 330905 series, with particular focus on configurations that have been discontinued or are subject to extended lead times from the OEM. Our sourcing protocol covers three supply tiers: (1) new-in-box OEM stock sourced from authorized distribution channels; (2) factory-recertified units that have undergone full electrical and mechanical restoration to OEM specification; and (3) tested-functional surplus units with documented test records. For end-users operating machinery with 10+ year installation cycles — common in nuclear, refinery, and compressor train applications — DriveKNMS provides lifecycle extension support including cross-reference mapping to compatible replacement probes where direct replacements are unavailable. All 330905 units are shipped with calibration certificates and gap voltage verification data sheets. Minimum order quantities are flexible to support both single-unit emergency replacements and bulk MRO procurement contracts.

Quality Control for the 330905 Range

Each 330905 series probe processed by DriveKNMS undergoes a structured verification protocol before dispatch. The test sequence includes: (1) dimensional inspection of the M8 metric thread body and probe tip face for mechanical damage or corrosion; (2) DC resistance measurement of the probe coil to verify coil integrity against OEM specification (nominal 7.9 Ω ± 10%); (3) gap voltage linearity test using a calibrated Proximitor driver (330180 or equivalent) across the full 0–2 mm linear range, with output recorded at 0.25 mm increments; (4) cable continuity and insulation resistance test at 500 VDC to verify cable jacket and shield integrity; (5) connector pin-out verification for CN and flying-lead terminations. Units that fail any parameter are quarantined and not returned to stock. Test records are retained for a minimum of 5 years and are available to customers on request.

📩 Contact Information

Email: sale@driveknms.com | WhatsApp: +86 18359293191 | Web: driveknms.com
© 2026 DriveKNMS. All trademarks belong to their respective owners. Specifications are for reference only and subject to change without notice. Verify all parameters against official documentation before installation.