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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.
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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Disclaimer: We are not an authorized distributor or distributor of the product manufacturer of this website, The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because our company is not an authorized distributor of this product, the Original Manufacturer`s warranty does not apply.While many DCS PLC products will have firmware already installed, Our company makes no representation as to whether a DSC PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. Our company also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from our company, its distributors, or any other source. Our company also makes no representations as to your right to install any such firmware on the product. Our company will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.
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