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      330880-28-00-085-03-02

      Proximity Transducer
      Product image is representative; revision or series may vary. Contact us to request a specific version.

      Product Describe：

      PROXPAC XL 
      Proximity Transducer
      -17.5 to -26 Vdc (12 mA max)
      50 Ω output impedance
      0 to 10 kHz, PPS housing
      Type 4X/IP66 rated

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      Technical specifications for 330880-28-00-085-03-02

      • Manufacturer:
        Bently Nevada
      • Product Category:
        Machinery Monitoring Systems
      • Spare Part Number:
        330880-28-00-085-03-02
      • Estimated shipping dimensions:
        38.5x9x9.2cm
      • Weight:
        1.45 kg
      • Tariff Code:
        8537101190
      • Counliy of origin:
        USA
      • Probe and Approvals Option:
        3300 XL 8 mm probe with Multiple Approvals
      • Standoff Adapter Option:
        No standoff adapter
      • Probe Penetration Option:
        8.5 in（216mm）
      • Fittings Option:
        One 3/4-14 NPT fitting, one 3/4-14 NPT to 1/2-14 NPT SST reducer and two plugs
      • Mounting Thread Option:
        3/4-14 NPT
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      Information

      Overview Manuals Common Applications Product Precautions
      The 330880-28-00-085-03-02 is the PROXPAC XL integrated proximity sensor assembly manufactured by Bentley Nevada, USA. This device integrates the probe and sensor into a housing, eliminating the need for extension cables in traditional systems.
        • Features a linear measurement range of 2 mm (80 mils)
        • Certified to IP66 and NEMA Type 4X ingress protection ratings
        • Delivers a high-accuracy output with an Incremental Scale Factor (ISF) of 7.87 V/mm (200 mV/mil) ±5%
      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 330880-28-00-085-03-02 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
      Used to monitor shaft vibration and axial position of large gas turbines, steam turbines, and generators to prevent catastrophic failures caused by blade rubbing or rotor unbalance.

      Oil & Gas
      Installed on large natural gas compressors and crude oil export pumps on offshore drilling platforms or long-distance pipelines to monitor rotor dynamics and ensure safe, continuous high-pressure transmission.

      Petrochemical & Refining Industry
      Used to monitor the shaft centerline plot and mechanical wear of critical assets like cracked gas compressors and hydrotreating pumps (API 670 compliant equipment) for early fault warning.

      Hydroelectric Power
      Specially used to monitor water guide bearing swing, main shaft runout, and thrust bearing axial displacement in hydro-generator units (vertical or horizontal).

      Pulp & Paper
      Monitors bearing wear and mechanical vibration of large paper machine dryer gearboxes, refiners, and high-speed cutter drive shafts to ensure paper thickness uniformity.

       During operation, strictly control the installation gap and alignment. Ensure the initial static voltage is set at the linear midpoint. Never twist or pull the probe trailing cable. Do not make blind adjustments while the machine is running. Although the housing is IP66-rated, avoid prolonged water accumulation around explosion-proof covers and gland joints. Since the system is factory-calibrated for AISI 4140 steel, any change in the target shaft material requires recalibration of the Incremental Scale Factor (ISF). Additionally, regularly inspect the housing's anti-static grounding to prevent high-frequency interference.

      FAQ View All FAQ

      • What is 330880-28-00-085-03-02?
        This is a PROXPAC XL Proximity Transducer Assembly manufactured by Bently Nevada.
      • What material is the rigid housing of 330880-28-00-085-03-02 made of?
        The housing is molded from high-strength reinforced engineering plastic (PPS) and embedded with glass and conductive fibers, which increases mechanical strength and provides excellent anti-static charge accumulation properties.
      • How does 330880-28-00-085-03-02 work?
        It operates on the eddy current principle. The probe tip emits a high-frequency electromagnetic field toward the metal shaft, outputting a voltage directly proportional to the gap distance by measuring energy loss.
      • How do you use a product like 330880-28-00-085-03-02?
        Thread the assembly directly into the machine's bearing housing via its 3/4-14 NPT thread. Adjust the initial electrical gap between the probe tip and the shaft surface, lock it, and wire the signal outputs directly to a monitoring system like the Bently Nevada 3500 system.
      • What level of environmental protection rating does this assembly possess?
        The assembly features Type 4X and IP66 high-protection ratings, effectively defending against dust, heavy rain, and corrosive salt spray in harsh outdoor and marine environments.
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