Bently Nevada 3300 Series Modules – 330101-01-29-10-01-05

Technical Dossier

Product Details And Specifications

Bently Nevada 3300 Series Technical Notes

The Bently Nevada 3300 Series is one of the most widely deployed eddy-current proximity transducer systems in global heavy industry. Installed across petrochemical refineries, nuclear power stations, offshore platforms, LNG terminals, and rotating machinery facilities, the 3300 Series provides continuous, non-contact measurement of shaft radial vibration, axial position, differential expansion, and eccentricity. Its modular architecture — comprising probes, extension cables, and proximitors — has made it the de facto standard for API 670-compliant machinery protection systems on steam turbines, gas compressors, centrifugal pumps, and large electric motors. The system operates on a 5-meter or 9-meter probe-to-proximitor cable configuration, with output signals typically ranging from −1 VDC to −24 VDC, directly compatible with Bently Nevada 3500 Series rack-based monitoring systems and third-party DCS/PLC inputs.

The Evolution of 3300 Series Architecture

The 3300 Series was introduced by Bently Nevada Corporation (acquired by GE in 2002, subsequently integrated into Baker Hughes in 2017) as a successor to earlier 7000 Series transducer technology. The original 3300 architecture standardized the three-component transducer system: probe tip, armored extension cable, and proximitor (signal conditioning module). Early variants used 5 mm and 8 mm probe tip diameters, targeting different shaft material conductivities and gap ranges.

Through successive generations, the series expanded to include XL (Extended Linear) variants with a wider linear measurement range (up to 2.54 mm / 100 mil), high-temperature probe options rated to 177°C continuous, and intrinsically safe (IS) versions certified for Zone 0/1 hazardous areas under ATEX and IECEx standards. The 3300 NSv (Non-Standard Voltage) variant addressed installations requiring compatibility with legacy −18 VDC supply rails. By the mid-2000s, the 3300 XL 8mm probe had become the dominant configuration for new API 670 installations globally.

As of 2026, the 3300 Series is in its mature/end-of-active-production phase. Bently Nevada's current primary offering is the 3300 XL series alongside the newer Velomitor and Proximitor Xace platforms. However, the installed base of legacy 3300 components across long-lifecycle industrial assets (nuclear, refinery, power generation) remains enormous, sustaining strong demand for OEM-equivalent spare parts, calibrated replacements, and long-term maintenance inventory.

3300 Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked configurations within the Bently Nevada 3300 Series. Each entry reflects a distinct probe geometry, cable length, or proximitor specification.

Proximity Probes — 5 mm Tip Diameter

• 330101-00-06-10-01-00: 5mm probe, 6-inch armored cable, standard temperature, metric thread
• 330101-00-08-10-01-00: 5mm probe, 8-inch armored cable, standard temperature, metric thread
• 330101-01-29-10-01-05: 5mm probe, 29-inch armored cable, standard temperature, metric thread, 5m system
• 330101-02-29-10-01-05: 5mm probe, 29-inch armored cable, high-temperature rated, metric thread
• 330101-00-30-10-02-00: 5mm probe, 30-inch armored cable, standard temperature, UNF thread

Proximity Probes — 8 mm Tip Diameter (XL Series)

• 330180-91-00: 8mm XL probe, standard configuration, 200 mil linear range
• 330180-51-05: 8mm XL probe, 5-meter cable system, standard temperature
• 330180-51-00: 8mm XL probe, standard cable, general-purpose radial vibration
• 330104-00-06-10-01-00: 8mm probe, 6-inch cable, standard temperature, metric thread
• 330104-00-30-10-02-00: 8mm probe, 30-inch cable, standard temperature, UNF thread

Extension Cables

• 330130-045-00-00: 3300 Series extension cable, 4.5-meter length, standard armored
• 330130-080-00-00: 3300 Series extension cable, 8.0-meter length, standard armored
• 330130-045-02-00: 3300 Series extension cable, 4.5-meter, high-temperature rated

Proximitors (Signal Conditioners)

• 330180-90-00: 3300 XL 8mm Proximitor, −24 VDC supply, standard output
• 330100-90-01: 3300 5mm Proximitor, −24 VDC supply, DIN rail mount
• 330105-02-12-10-02-00: 3300 NSv Proximitor, non-standard voltage, 5mm system
• 330180-X1-05: 3300 XL Proximitor, ATEX/IECEx Zone 1 certified, intrinsically safe