Bently Nevada 330101-33-53-10-12-05 3300 XL 8 mm Proximity Probe

Description

330101-33-53-10-12-05: 3300 XL 8 mm proximity probe, 3/8-24 UNF thread, Option 33 unthreaded length, Option 53 case length, Option 12 ClickLoc connector with FluidLoc cable, Option 05 CSA/ATEX/IECEx.

Unlike standard configurations that use basic coaxial cables, this variant features a specialized FluidLoc cable (Option 12) constructed to prevent fluid migration along the interior of the cable sheath. This makes the probe suitable for applications where bearing oil or other machine fluids must be contained under differential pressure. The probe has an unarmored 3/8-24 UNF threaded casing with a 3.3 in unthreaded section and a 5.3 in overall case length, leaving a 2.0 in threaded mounting portion. It interfaces with a 3300 XL Proximitor sensor and standard extension cables within a 1.0 m total length system configuration, serving as a non-contact eddy-current transducer to measure shaft vibration and axial displacement.

Features

• Option 12 FluidLoc cable prevents process fluids or bearing oil from migrating along the interior of the cable sheath.
• Option 33 specifies a 3.3 in (84 mm) unthreaded length paired with a 5.3 in (135 mm) overall case length.
• 3/8-24 UNF threaded casing manufactured from 303 stainless steel without external armor.
• Miniature coaxial ClickLoc connector with no connector protector for click-verified connection.
• Option 05 agency approval package certified for CSA, ATEX, and IECEx hazardous area installations.
• Polyphenylene sulfide (PPS) probe tip with TipLoc molding for robust mechanical bonding.
• Standard 1.0 m (3.3 feet) overall cable length, requiring a matching extension cable to complete the transducer loop.

Applications

• Oil and gas rotating machinery, including compressor and pump rotor displacement monitoring.
• Steam and gas turbine bearing housing shaft vibration measurement.
• High-pressure casing penetration installations requiring FluidLoc oil barrier performance.
• Critical rotating machinery protection installations requiring ATEX/IECEx hazardous location certs.

Ordering Information

Technical Specifications

Connections and Interfaces

The probe lead is terminated with a gold-plated miniature coaxial ClickLoc connector. This connector attaches directly to a 3300 XL extension cable by applying light hand force until a click is felt, establishing a coaxial RF signal path to the Proximitor sensor.

Installation Guidelines

• Probe Gapping: Mount the probe with the physical gap (typically 1.27 mm or 50 mils for mid-range calibration) relative to the target surface. Verify gap voltage using a multimeter on the Proximitor output prior to locking the case threads.
• Cable Routing: Maintain a minimum cable bend radius of 25.4 mm (1.0 in). Route probe and extension cables away from high-voltage AC lines to prevent electrical interference.
• Fluid Sealing: This FluidLoc variant blocks fluid migration along the cable, but standard practice dictates sealing probe entry ports and junction boxes against external moisture ingress.
• Torque Limits: Do not exceed the maximum rated installation torque of 11.2 Nm (100 in-lbf) for standard 3/8-24 UNF forward-mounted probe cases. Over-tightening can damage the casing or threads.

Compliance and Certifications

• CSA: Certified for Canadian and US standards in hazardous locations.
• ATEX/IECEx: Intrinsic safety and non-incendive certifications for Zone 0, Zone 1, and Zone 2 gas/dust atmospheres when installed per system drawings.