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The 330881-16-04-132-03-02 is a 3300 XL Series 11mm Proximity Transducer Probe configured with a 3/8-24 UNF thread, 1.6-inch unthreaded length, 0.4-inch threaded length, and a 4.0-meter (13.2-foot) total cable length with standard click-lock miniature coaxial connectors.
Features an 11mm tip to provide a 4.0 mm (160 mils) linear range—twice that of standard 8mm probes—for wide-range thrust and expansion monitoring
Complies with API 670 for calibration-free interchangeability across system components and retains backward compatibility with legacy non-XL 3300 series
Incorporates a Fluidloc cable to block internal oil migration and includes a connector protector sleeve to isolate moisture and dust
This non-contact eddy current probe converts the precise physical distance between the probe tip and the observed conductive surface into high-frequency electromagnetic field modifications, enabling accurate measurements of both static position and dynamic vibration. Due to its larger 11mm tip diameter, this transducer probe delivers an extended 4.0 mm (160 mils) linear range and a calibrated scale factor of 3.94 V/mm (100 mV/mil), making it the standard solution for applications requiring a wider measurement window than standard 8mm probes, such as axial thrust position, thermal growth, and casing expansion monitoring on heavy-duty rotating machinery.
Fully complying with the American Petroleum Institute's (API) 670 Standard, it supports complete interchangeability and backward compatibility with legacy non-XL 3300 series 11mm components. The integrated Fluidloc coaxial cable encapsulation provides exceptional resistance to high-pressure oil and moisture ingress, ensuring mechanical durability and signal stability across severe industrial environments.
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Bently Nevada 330881-16-04-132-03-02 Proximity Transducer Manuals, Datasheets, Drivers, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description.
Power Generation
Measures rotor axial thrust position and casing differential expansion on critical utility steam turbines and generators.
Oil & Gas Refining
Monitors thrust bearing wear and rotor displacement on high-pressure centrifugal charge pumps and hydrocracking compressors.
Iron & Steel Metallurgy
Measures thrust displacement and mill housing movement on blast furnace axial blowers and hot rolling mill drives.
Mining & Mineral Processing
Monitors axial shaft runout and bearing clearances on large semi-autogenous (SAG) mills and heavy-duty rock crushers.
Air Separation & Industrial Gases
Monitors rotor thrust position on main air compressors and high-speed cryogenic expansion turbines.
Pulp & Paper
Measures roll thrust displacement and shaft expansion on high-speed paper machinery and twin-wire press refiners.
When using the 330881-16-04-132-03-02 probe, ensure its 4.0-meter (13.2 ft) integral cable matches the extension cable to form the correct total system length (such as 5m or 9m), and connect exclusively to an 11mm Proximitor to maintain the 3.94 V/mm scale factor. Use a torque wrench during installation to prevent thread and tip damage, keep connectors clean with the protector sleeve properly locked, and strictly adhere to the -02 and -03 specifications for oil-migration sealing and hazardous-area barrier wiring.
This assembly utilizes a reinforced PPS housing for durability and IP66/Type 4X protection in industrial environments. It operates using high-frequency eddy current technology, providing a 7.87 V/mm (200 mV/mil) output to monitor non-contact dynamic vibrations and static displacements.
It is an integrated PROXPAC XL proximity transducer assembly that combines an eddy current probe and a Proximitor sensor into a single, self-contained housing.
What is the main application of the 330881-16-04-132-03-02?
It is used for continuous, non-contact measurement of shaft vibration, axial position, and speed reference on industrial rotating machinery.
How do you install and use the 330881-16-04-132-03-02?
Thread the assembly into the machine casing via the NPT thread, adjust the probe penetration depth, lock it in place, and connect the field wiring directly to the monitor.
How to install and use products like the 330881-16-04-132-03-02?
Screw the 3/4-14 NPT thread into the bearing housing mounting port, utilize the internal mechanism to set the initial voltage gap (recommended at 1.27 mm), and terminate the field 3-conductor shielded cable directly onto the terminal blocks inside the housing.
What is the operating principle of the 330881-16-04-132-03-02?
It operates on the high-frequency eddy current principle.
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