Bently Nevada 330901-00-96-10-02-05 3300 NSv Proximity Probe

Description

330901-00-96-10-02-05 specifies this 3300 NSv proximity probe configuration featuring a 1/4-28 UNF thread without armor, a 0.0 in unthreaded length, a 9.6 in overall case length, a 1.0 m (39 in) total probe length, a miniature coaxial ClickLoc connector on a standard cable, and multiple agency approvals. This non-contact eddy-current displacement sensor is designed for tight clearances and restricted target areas where standard-diameter probes cannot fit, such as small-bore rotating machinery and aeroderivative gas turbines. It provides precise gap voltage output directly proportional to the physical distance between the probe tip and the target surface.

Unlike armored sibling variants (such as the 330902 series) that use integrated stainless steel armor, the 330901 configuration uses an unarmored standard FEP-insulated coaxial cable for easier routing in narrow internal conduits. This specific variant has a 9.6 in (Option 96) case length and is completely threaded (Option 00 unthreaded length). It operates as part of a complete 3300 XL NSv proximity transducer system, interfacing with a 330930 extension cable and a 330980 Proximitor sensor to achieve a linear measurement range of 1.5 mm (60 mils).

Features

• Probe Thread and Armor: 1/4-28 UNF-2A thread configuration without stainless steel protective armor.
• Mechanical Dimensions: 0.0 in unthreaded length (fully threaded case) paired with a 9.6 in overall case length.
• Total Cable Length: 1.0 m (39 in) FEP-insulated standard coaxial probe lead.
• ClickLoc Connector: Gold-plated brass miniature coaxial ClickLoc connector to resist vibration-induced loosening.
• Hazardous Area Certification: Option 05 Multiple Approvals package (including ATEX, IECEx, and North American intrinsically safe certifications).
• Tip-to-Case Construction: TipLoc molding for a robust bond between the polyphenylene sulfide (PPS) probe tip and AISI 304 stainless steel case.
• Secure Cable Attachment: CableLoc design providing up to 220 N (50 lb) of pull strength between the probe lead and the tip assembly.

Applications

• Small-bore rotating machinery with tight clearances or limited target areas.
• Aeroderivative gas turbines and high-speed turbocompressors with restricted mounting geometry.
• Axial shaft position and radial vibration measurements where cross-talk must be minimized in dense setups.
• Machinery environments requiring high chemical resistance against process gases and synthetic lubricants.

Ordering Information

Technical Specifications

Installation Guidelines

• Gap Setting: Use a digital voltmeter to set the recommended 1.0 mm (40 mils) initial gap, corresponding to a nominal bias voltage output.
• Thread Engagement: Do not exceed the maximum thread engagement length of 0.375 in for 1/4-28 threads to prevent binding.
• Torquing: Tighten 1/4-28 probe cases to a recommended torque of 5.1 N m (45 in lb) and a maximum rated torque of 7.3 N m (65 in lb).
• Bend Radius: Maintain a minimum bend radius of 25.4 mm (1.0 in) for both the probe cable and the extension cable during installation.
• Cable Routing: Use conduit or cable trays to protect the unarmored coaxial lead. Secure connections using silicone self-fusing tape or connector protectors in oily environments.
• Pressure Seal: Note that while the probe features a Viton O-ring seal, exposing it to temperatures below -34 degC (-30 degF) for prolonged periods can affect the seal's flexibility.

Compliance and Certifications

• Electrical Safety: SIL 2 (HFT=0), SIL 3 (HFT=1) certified for functional safety.
• Hazardous Area Classifications: Ex ia IIC T5...T1 Ga, Ex ia IIIC T90degC...T280degC Dc (Intrinsically Safe EPL Ga/Dc), Ex nA IIC T5...T1 Gc, Ex ec IIC T5...T1 Gc (Non-sparking/Increased Safety EPL Gc) when connected per drawing 141092 or 140979.
• Electromagnetic Compatibility (EMC): European Union EMC Directive 2014/30/EU, EN 61000-6-2 (Immunity), EN 61000-6-4 (Emissions).
• Environmental Compliance: RoHS Directive 2011/65/EU, China RoHS (EFUP 15 years).
• Maritime Standards: Complies with ABS and other marine classification rules for offshore structures and marine vessels.