Bently Nevada 330105-02-12-10-02-00 – 3300 XL 8 mm Proximity Probe for Critical Shaft Vibration and Position

The Bently Nevada 330105-02-12-10-02-00 is part of the 3300 XL 8 mm proximity transducer system that plants rely on for continuous vibration and axial position measurement on turbines, compressors, pumps, and gearboxes. It pairs with a matching 3300 XL extension cable and Proximitor sensor to deliver the familiar 200 mV/mil scale factor that most analysts expect in rotating machinery diagnostics. From my experience, this probe is the “fit-and-forget” choice in many cases—robust build, stable calibration, and dependable linearity over the standard 80 mil (2 mm) range when used with the proper Proximitor.

Our Order Process & Guarantees

• Warranty: 365 days
• Lead time: 1 week if in stock; no more than 1 month at the latest
• Payment: 50% advance; full payment before delivery
• Express options: FedEx, UPS, DHL

Key Features

• 3300 XL 8 mm sensing – Delivers the standard 200 mV/mil (≈7.87 mV/µm) sensitivity with the matching 3300 XL Proximitor, simplifying analysis and trending.
• Non-contact eddy-current measurement – Ideal for shaft vibration, radial position, and thrust position on high-speed rotating assets.
• Rugged probe construction – Threaded mount with locknut; designed to handle typical high-temperature machinery environments.
• Stable linear range – Typically around 2 mm (80 mil) linear range with a nominal 1.0 mm (40 mil) gap, helping avoid re-gapping headaches during outages.
• System compatibility – Works with 3300 XL extension cables (e.g., 330130 series) and 3300 XL Proximitor sensors for a complete transducer chain.
• EMI/RFI resilience – Shielded coaxial design and proven Bently Nevada signal conditioning minimize noise in electrically harsh areas.

Technical Specifications

Application Fields

You’ll typically see the 330105 on:

• Steam and gas turbines – radial vibration and thrust position monitoring
• Compressors and expanders – shaft vibration and casing movement trends
• Pumps and fans – bearing health indication and soft-foot detection via vibration
• Gearboxes – meshing issues and imbalance monitoring through shaft dynamics
• Paper machines, steel mills, and refinery trains – continuous protection and predictive maintenance

One thing I appreciate is how easily it drops into existing 3300 XL loops. A maintenance lead at a combined-cycle plant told us, “We swapped in the new 330105 probes during the outage, set the gap to 40 mil, and our trend data matched pre-outage baselines within minutes.” That consistency reduces post-shutdown surprises.

Advantages & Value

• Reliability under heat and vibration – The probe construction and shielding typically hold up well in turbine decks and compressor enclosures.
• Compatibility across installed bases – Works with established 3300 XL cabling and Proximitor hardware, so you avoid mixed calibration headaches.
• Lower lifecycle cost – Stable calibration reduces rework; standard 200 mV/mil scaling simplifies spares and analysis.
• Support and documentation – We can help decode the option string and match cable lengths and thread types to your machine drawings.

Installation & Maintenance

• Mounting: Install in a rigid, threaded bracket or port; tighten locknut to spec; ensure probe axis is normal to the shaft surface.
• Gapping: Set nominal gap around 1.0 mm (40 mil) unless your protection system requires otherwise; verify linearity with the Proximitor.
• Cabling: Route shielded cable away from high-voltage lines; maintain minimum bend radius; avoid crushing or sharp edges.
• Panel/Enclosure: Proximitor typically installed in a ventilated cabinet meeting industrial panel standards; keep away from heat sources.
• Safety: Lock-out/tag-out rotating equipment; confirm target material and surface finish to maintain calibration accuracy.
• Routine care: Inspect probe tips during outages; clean light deposits; confirm gap readings; update monitoring system firmware as applicable.

Supporting Components (Typical)

• Bently Nevada 3300 XL Proximitor Sensor (8 mm system)
• Bently Nevada 330130-xx-xx-xx 3300 XL Extension Cable (length per site requirement)
• Mounting hardware and brackets for 8 mm probes (thread type per machine port: 3/8-24 UNF or M10×1)

Quality & Certifications

• CE marking and RoHS compliance (typical for 3300 XL series)
• Manufactured under ISO 9001 quality systems
• Manufacturer’s standard quality approvals apply; our warranty: 365 days