Description

As a vital component of industrial machinery protection systems, the Bently Nevada 330101-00-53-05-02-05 is an unarmored, threaded 8 mm proximity probe designed to monitor shaft movement and displacement. This specific variant is engineered with a 5.3-inch fully threaded case and 0.0-inch unthreaded length, allowing for deep-thread flush-mounting inside bearing housings where maximum case engagement is required. It is fitted with a compact 0.5-meter (1.6 feet) triaxial cable that terminates in a standard gold-plated miniature coaxial ClickLoc connector. This short-cable configuration is ideal for installations where the probe connects immediately to an extension cable or nearby junction box, eliminating cable slack inside machine casings. Backed by robust CSA, ATEX, and IECEx certifications, this probe is certified for reliable performance in hazardous environments.

The probe operates on the eddy-current principle, generating a high-frequency electromagnetic field around its polyphenylene sulfide (PPS) tip. As a conductive target, such as a machine shaft, moves relative to the tip, the probe detects the change in impedance. This change is transmitted back to a 3300 XL Proximitor Sensor, which translates the signal into a precise voltage output proportional to the gap. Fully interchangeable with all standard components of the Bently Nevada 3300 XL 8 mm series, this probe ensures robust machinery protection and continuous diagnostic capabilities without the need for manual calibration.

Features

• Optimized Thread Engagement: Features a 5.3-inch case with 0.0-inch unthreaded length to provide deep mounting thread contact.
• Durable PPS Probe Tip: Robust polyphenylene sulfide (PPS) tip encapsulation offers physical resilience and resistance to harsh industrial fluids.
• Triaxial Signal Cable: Premium 75-ohm triaxial fluoroethylene propylene (FEP) insulated cable provides superior shield integrity against electrical noise.
• Miniature coaxial ClickLoc Connector: Offers a secure, vibration-resistant connection with clear physical confirmation of successful coupling.
• Complete Component Interchangeability: Fully compatible with other 3300 XL 8 mm system parts, eliminating matching and bench-calibration steps.
• Broad Hazardous Certification: Ready for environments requiring CSA, ATEX, and IECEx explosion-proof ratings.

Applications

The Bently Nevada 330101-00-53-05-02-05 proximity probe is utilized for critical machinery asset protection, providing non-contacting radial vibration, axial position, and keyphasor reference measurements. It is primarily applied in heavy industries such as oil and gas, power generation, petrochemicals, and water treatment. Typical equipment installations include:

• Steam and gas turbine shaft vibration monitoring
• Compressor and pump rotor displacement and axial thrust measurements
• Fluid-film bearing shaft position tracking
• High-speed rotating machinery overspeed and speed sensing

Ordering Information

Technical Specifications

Installation Guidelines

Proper installation of the proximity probe is critical to ensure accurate measurement performance and prevent physical damage:

• Probe Gap Calibration: Mount the probe with the appropriate physical gap relative to the target surface (typically gapped around 1.27 mm or 50 mils) corresponding to the linear range calibration.
• Threading and Torque: Avoid over-tightening. The recommended torque for the first three threads of standard forward-mount probes is 7.5 N-m (66 in-lbf), with a maximum rated torque of 22.6 N-m (200 in-lbf).
• Cable Routing: Ensure a minimum cable bend radius of 25.4 mm (1.0 in) is maintained during routing to prevent core damage and signal interference.
• Connector Mating: Hand-tighten the ClickLoc gold connectors until they physically "click." Do not use pliers or tools on gold click-type joints unless mating a non-XL steel connector, in which case finger-tight plus an additional 1/8 turn is advised.
• Grounding and Shielding: Connect the outer shield of the extension cable to the Proximitor Sensor housing, ensuring proper system grounding to eliminate electromagnetic interference.

Compliance and Certifications

• Hazardous Area Approvals (Option 05): CSA, ATEX, and IECEx certifications for Zone 0, 1, and 2 hazardous areas.
• Intrinsically Safe (ia): Class I, Zone 0: AEx/Ex ia IIC T5...T1 Ga; Class I, Div 1, Groups A, B, C, D; Class II, Groups E, F, G; Class III.
• Non-Incendive / Increased Safety (nA, ec): Class I, Zone 2: AEx/Ex ec IIC T5...T1 Gc; Class I, Div 2, Groups A, B, C, D.
• Electromagnetic Compatibility (EMC): European Community Directive 2014/30/EU standards (EN 61000-6-2 and EN 61000-6-4).
• RoHS compliance: European Community Directive 2011/65/EU and China RoHS.
• Functional Safety: SIL 2 certified under standard HFT=0, SIL 3 certified with HFT=1.