Description
Bently Nevada 330105-02-12-05-02-05 | 3300 XL 11mm
Dynamic Product Introduction
Measuring high-amplitude vibration or severe shaft displacement on large hydroelectric turbines and heavy industrial compressors frequently exceeds the linear limits of standard 8mm probes. The Bently Nevada 330105-02-12-05-02-05 resolves this constraint by deploying an enlarged 11mm tip geometry that extends linear tracking capabilities without sacrificing signal fidelity.
Outperforming smaller sensors in high-vibration environments, this unit delivers superior low-frequency response and broader gap ranges. Reliability engineers rely on its robust mechanical construction and advanced TipLoc molding to ensure uninterrupted machinery protection where traditional probes saturate or lose linearity.
330105-02-12-05-02-05
Key Technical Specifications
| Core Parameter | Technical Specification |
| Product Identifier | 330105-02-12-05-02-05 (3300 XL 11mm Probe) |
| Tip Diameter | 11 mm (Extended range design) |
| Linear Range | 4.0 mm (160 mils) spanning from 0.6 to 4.6 mm (25 to 180 mils) |
| Sensitivity | 3.94 V/mm (100 mV/mil) nominal |
| Unthreaded Length (-02) | 20 mm |
| Case Length (-12) | 120 mm overall case length |
| Total Cable Length (-05) | 0.5 meter (1.6 feet) |
| Connector & Cable Type (-02) | Miniature coaxial ClickLoc connector, standard unarmored cable |
| Agency Approvals (-05) | Multiple approvals (CSA, ATEX, IECEx hazardous area compliant) |
| Operating Temperature | -51^\circC to +177^\circC (-60^\circF to +350^\circF) |
Global Sourcing & Live-Test SOP (Transparency Core)
Procuring specialized 11mm eddy-current transducers requires strict verification protocols to maintain absolute loop accuracy:
- Inbound Verification: Incoming inventory undergoes high-magnification visual inspection of the polyphenylene sulfide probe tip, coaxial pin plating, and bar-code traceability markings.
- Live Simulation: Probes are paired with matching 3300 XL 11mm Proximitor sensors mounted on a precision micrometer target rig.
- Diagnostics: Technicians perform multi-point gap sweeps against a standardized 4140 steel target, verifying the 100 mV/mil scale factor linearity, output offset voltage, and thermal stability over a 24-hour test cycle.
- Final Prep: Connector pins are sealed with moisture-resistant dust caps, and the assembly is packed in anti-static ESD shielding bags.
The Field Engineer’s Pitfall Guide
❗ Proximitor and Probe Mismatch Errors: Pairing an 11mm probe with a standard 8mm Proximitor sensor will destroy system linearity because the internal electronics and coil scaling differ entirely. (I’ve seen commissioning teams struggle with wild calibration errors because an 11mm sensor was mistakenly tied to an 8mm Proximitor box.)
❗ Overtightening and Mechanical Distortion: Exceeding torque limits when threading the 11mm probe housing into machine mounts can fracture the larger PPS tip or distort the coil assembly.
❗ Improper Extension Cable Sizing: Failing to account for the total system electrical length (probe cable plus extension cable equaling either 5 meters or 9 meters) will shift output bias voltages out of range.
Intent-Driven FAQ
Can I use a standard 8mm Proximitor sensor with this 11mm probe?
No, 11mm probes require a dedicated 3300 XL 11mm Proximitor sensor tuned specifically to the electrical characteristics and 100 mV/mil sensitivity of the larger tip.
What do the specific option digits (-02-12-05-02-05) mean in this part number?
They define the unthreaded length (20 mm), overall case length (120 mm), total cable length (0.5 meter), miniature coaxial ClickLoc connector type, and multi-agency hazardous area approvals.
Are these components supplied factory-sealed or as surplus stock?
Inventory batches feature a mix of verified factory-sealed surplus (unused) and fully bench-tested secondary stock, with complete test history documented on every order.
Why choose an 11mm probe instead of a standard 8mm probe?
An 11mm probe provides twice the linear measurement range (4.0 mm vs 2.0 mm), making it essential for heavy machinery experiencing high vibration amplitudes where standard probes would clip.
