Product Overview

The 330102-04-78-05-02-05 is a ruggedized eddy current proximity transducer from the Bently Nevada 3300 XL series. Engineered for critical industrial machinery monitoring, this 8mm probe provides high-precision measurements of shaft vibration and axial position. This specific configuration features a 3/8-24 UNF threaded body protected by flexible stainless steel armor, making it ideal for environments where the sensor lead is exposed to mechanical abrasion or harsh process fluids. As a primary component of Turbine Supervisory Instrumentation (TSI), it translates physical displacement into a proportional voltage signal, enabling real-time machinery protection and predictive maintenance.

Technical Configuration

This model is defined by the following specific mechanical and electrical parameters:

• Model Number: 330102 (3/8-24 UNF Thread with Armor)

• Unthreaded Length: 0.4 inches (04 option)

• Overall Case Length: 7.8 inches (78 option)

• Total Cable Length: 0.5 meters (05 option)

• Connector Type: Miniature coaxial Click-Lok connector (02 option)

• Agency Approvals: CSA, ATEX, and IECEx hazardous area certified (05 option)

• Linear Range: 2.0 mm (80 mils)

• Operating Temperature: -51°C to +177°C (-60°F to +351°F)

• Nominal Scale Factor: 7.87 V/mm (200 mV/mil)

Performance and Durability

The 330102-04-78-05-02-05 is designed to meet or exceed the requirements of the API 670 standard. The probe tip is constructed from high-performance Polyphenylene Sulfide (PPS), which is hermetically overmolded to the sensing coil to prevent moisture or oil ingress. The integrated stainless steel armor provides a physical shield for the FEP-insulated coaxial cable, ensuring signal integrity even in the most demanding turbine decks or compressor sheds. Furthermore, the Click-Lok connector system features a gold-plated interface that resists vibration-induced signal noise and prevents accidental disconnection.

System Integration

A key advantage of the 3300 XL ecosystem is the total interchangeability of its hardware. This probe can be seamlessly integrated with any 3300 XL Proximitor sensor and extension cable of the same system length (typically 5 or 9 meters) without requiring bench calibration.

• Compatibility: Fully backward compatible with legacy non-XL 3300 series 5mm and 8mm components.

• Interference Resistance: Advanced electrical design provides superior RFI/EMI immunity, meeting European CE requirements without specialized shielding.

• Applications: Ideal for fluid-film bearing machines, Keyphasor reference measurements, and high-speed eccentricity monitoring.