Bently Nevada 330881-28-05-114-03-02 PROXPAC XL Proximity Transducer Assembly

Overview

The 330881-28-05-114-03-02 is a heavy-duty 11mm proximity probe from the Bently Nevada 3300 XL series. The 11mm system is specifically designed for applications requiring a wider linear range than standard 8mm probes, typically used for measuring axial thrust position or vibration on large-scale rotating machinery. With its 5/8-18 UNF thread and ruggedized construction, this probe provides a larger eddy current field, making it more tolerant of target misalignment and surface irregularities in massive steam turbines and generators.

Detailed Specifications (Parsed Code)

The part number 330881-28-05-114-03-02 breaks down into the following physical and regulatory parameters:

Operational Capabilities

The 330881-28-05-114-03-02 is engineered for the highest level of signal stability. The 11mm tip provides a linear range of 4.0 mm (160 mils), double that of the 8mm version. This extended range is vital for monitoring thermal expansion and thrust bearing wear in critical power generation equipment. The integrated 316 stainless steel armor protects the coaxial cable from mechanical damage, while the -02 multi-approval rating ensures compliance with global safety standards for Zone 0, 1, and 2 hazardous locations.

Technical FAQ

Can I use this 11mm probe with a standard 3300 XL 8mm Proximitor?

No. The 11mm probe must be paired with a 3300 XL 11mm Proximitor® Sensor (330850). The 11mm system has a scale factor of 100 mV/mil (3.94 V/mm), which differs from the 200 mV/mil scale of the 8mm system.

What is the significance of the 11.4-foot length?

The -114 option specifies a 11.4-foot (3.5 meter) probe length. This is typically used in a 4.0-meter total system length or a 9.0-meter total system length (when combined with a 5.5-meter extension cable).