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The 330880-28-15-044-01-02 is an industrial-grade integrated eddy current displacement sensor assembly, officially named PROXPAC XL. It is an intelligent sensor that integrates the probe and preamplifier directly within a single explosion-proof housing, specifically designed for non-contact monitoring of shaft vibration, shaft displacement, and rotational speed in large industrial rotating machinery.
Standard 3/4-14 NPT mounting threads
High-level industrial ingress protection rated at IP66 and Type 4X
Hazardous area explosion-proof certifications by multiple international regulatory agencies
The design of the PROXPAC XL Proximity Transducer Assembly is similar to our 31000/32000 Proximity Probe Housing Assemblies. The assembly offers the same advantages and features as the 31000 and 32000 housings for accessing and externally adjusting proximity probes. However, the housing cover of the PROXPAC XL Assembly also contains its own 3300 XL Proximitor sensor. This design makes the PROXPAC XL Assembly a completely self-contained proximity probe system, and eliminates the need for an extension cable between the probe and its associated Proximitor sensor. It also eliminates the need for a separate Proximitor housing, as the field wiring connects directly between the monitors and PROXPAC XL Assemblies. The PROXPAC XL housing is made of Polyphenylene Sulfide (PPS), which is an advanced, molded thermoplastic. This material replaces the steel and aluminum in previous housings offered in the Bently Nevada product line. It also incorporates glass and conductive fibers in the PPS to strengthen the housing and more effectively dissipate electrostatic charges. The PROXPAC XL housing is rated for Type 4X and for IP66 environments and provides extra protection in severe 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 330880-28-15-044-01-02 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.
Oil & Gas
Rotary condition monitoring and explosion-proof safety protection for large critical power equipment on offshore drilling platforms or onshore gathering stations.
Thermal Power
Monitoring high-frequency wobble and abnormal vibration of core auxiliary machinery surrounding large steam turbine generator sets. Example: Applied in axial position measurement of boiler feedwater pump drive shafts to strictly prevent rotor collisions.
Hydropower Generation
Shaft swing and speed calibration for large hydro-generator sets in highly humid and outdoor exposed environments.
Nuclear Power
Condition monitoring and accident prevention for high-reliability centrifugal pumps and power systems surrounding the nuclear island conventional island.
Paper & Pulp Industry
Monitoring heavy-duty drive components and gearbox transmissions of large, high-speed, continuously operating paper machines.
Rail Transportation
Auxiliary transit monitoring of high-power traction motor locomotive units or large shaft power maintenance test benches.
When using the 330880-28-15-044-01-02, the following critical points must be observed. Because this model integrates both the probe and Proximitor sensor within a single explosion-proof housing, field wiring must route directly into the internal terminal strip through the 3/4-14 NPT fittings, and adding any external extension cable is strictly prohibited to prevent signal distortion. During installation, users must verify that the 1.5-inch standoff adapter and 4.4-inch penetration depth exactly match the dimensions of the on-site bearing housing port, and then rotate the entire assembly under power to adjust the depth until the initial gap voltage stabilizes near the linear midpoint of approximately -10 VDC. Additionally, when opening the enclosure cover for external adjustment or field wiring, operators must isolate all power sources to comply with hazardous area explosion-proof protocols. Once reassembled, the Polyphenylene Sulfide (PPS) housing must maintain a proper ground connection to effectively dissipate electrostatic charges, while respecting the minimum cable bend radius limit of 25.4 mm during field wiring routing
The 330880-28-15-044-01-02 model houses a 3300 XL 8 mm probe with an integrated, dedicated Proximitor sensor, achieving a penetration depth of 4.4 inches via a 1.5-inch standoff adapter, while utilizing standard 3/4-14 NPT mounting threads and an explosion-proof housing equipped with 3/4-14 NPT fittings. While enhancing structural strength, this design more effectively dissipates electrostatic charges and provides a high-level industrial ingress protection rated at Type 4X and IP66. This configuration of integrating both the probe and the Proximitor sensor directly within a single housing completely eliminates the intermediate extension cable between them and removes the need for a separate Proximitor enclosure, allowing field wiring to connect directly between the monitors and the integrated assembly, which heavily simplifies the external adjustment and routing maintenance procedures across severe industrial sites.
It is a Bently Nevada PROXPAC XL series integrated proximity transducer assembly.
What is the basic structure of the 330880-28-15-044-01-02?
It features an all-in-one compact design, integrating an 8 mm proximity probe, a junction housing, and a built-in 3300 XL Proximitor sensor into a single physical unit.
How do you use products like the 330880-28-15-044-01-02?
It is mounted directly onto the exterior of the machine bearing housing via its 3/4-14 NPT thread, and the field wiring connects directly inside its enclosure without needing an external extension cable.
What is the core advantage of the integrated design of 330880-28-15-044-01-02?
It eliminates the traditional extension cable between the probe and Proximitor, removing the need for a separate Proximitor enclosure, which significantly reduces field wiring complexity and hardware costs.
What is the environmental protection rating of the 330880-28-15-044-01-02?
Rated for Type 4X and IP66, suitable for harsh industrial environments.
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