Bently Nevada 330851-02-000-050-10-01-CN 3300 XL 25 mm Proximity Probe

Description

Providing reliable displacement and vibration measurements on large utility turbomachinery, the Bently Nevada 330851-02-000-050-10-01-CN is engineered for high-precision monitoring in demanding industrial environments. As a primary sensor within the 3300 XL 25 mm Proximity Transducer System, this probe is configured with an M30x2 metric thread body, zero unthreaded length, a 50 mm overall case length, and a 1.0-meter integrated cable protected by stainless steel armor. Built with high-grade Polyetheretherketone (PEEK) tip materials and a corrosion-resistant AISI 304 stainless steel housing, the assembly withstands severe thermal cycling and chemical exposure. This specific model features country-specific agency approvals for reliable compliance in globally managed production facilities.

Features

• Extended Linear Range: Specifically calibrated to provide long-range displacement monitoring on large machinery shafts.
• FluidLoc Cable Technology: 75-ohm triaxial FluidLoc cable insulated with PFA prevents moisture or oil wicking through the core.
• Robust Mechanical Armor: Stainless steel (AISI 302) armor with a PFA outer jacket protects against physical impacts and aggressive process fluids.
• Premium Material Construction: PEEK tip and AISI 304 stainless steel case ensure maximum endurance against steam and chemicals.
• Certified Performance: Configured with CN approval options for specific country electrical and safety compliance.

Applications

• Thrust and radial vibration monitoring in large steam and gas turbines.
• Differential expansion tracking in high-capacity utility generators.
• Shaft positioning measurements on process compressors and large industrial fans.
• Industrial machinery safety interlocks and protection systems.

Technical Specifications

Empirical Engineering Insights

System Length Calibration Matching

The 1.0-meter physical length of this probe must be paired with an appropriate 3300 XL extension cable to achieve a total calibrated electrical system length of either 5.0 or 9.0 meters. Substituting mismatched physical and electrical lengths or mixing 25 mm probes with non-matching Proximitor sensors causes substantial impedance discrepancies, yielding severe gap-voltage calibration errors.

Cabling and Armor Management

The SST armor provides high physical resistance but must not be bent past its minimum static bend radius of 25.4 mm (1.0 inch). Kinking or exceeding this limit damages the delicate 75-ohm triaxial FluidLoc core, leading to signal instability or loss of machinery protection functionality.

Installation Guidelines