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    Apter Power offers genuine, self-contained Bently Nevada PROXPAC transducers to deliver direct, cable-free vibration data for your machine housings.

330801-28-00-050-03-02

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The Bently Nevada 330801-28-00-050-03-02 PROXPAC® Proximity Transducer Assembly is a highly integrated, self-contained proximity probe system designed for critical machinery protection.
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Technical specifications for 330801-28-00-050-03-02

  • Manufacturer:
    Bently Nevada
  • Part Number:
    330801-28-00-050-03-02
  • Product Family:
    PROXPAC XL Proximity Transducer Assembly
  • Product Type:
    PROXPAC® Proximity Transducer
  • Stock:
    1
  • Probe and Approvals:
    3300 XL 8 mm probe with Multiple Approvals
  • Standoff Adapter:
    No standoff adapter
  • Probe Penetration:
    50 mm
  • Fittings Option:
    One M20 fitting, two plugs
  • Mounting Thread:
    3/4-14 NPT
  • Supply Sensitivity:
    Less than 2 mV change in output voltage per volt change in input voltage.
  • Output resistance:
    50 Ω
  • Probe dc resistance (nominal) (RPROBE):
    7.58 ± 0.5 Ω
  • Weight:
    1.4 kg
  • Estimated shipping dimensions:
    30.0 cm × 12.0 cm × 9.1 cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Applications Operating Environment Installation & Integration

Features:

  • Houses a 3300 XL 8 mm proximity probe with multiple approvals and an integrated Proximitor® Sensor inside a single molded enclosure
  • Fabricated from Polyphenylene Sulfide (PPS) with glass and conductive fiber reinforcement, achieving Type 4X and IP66 environmental ratings
  • Accommodates both direct field wiring to monitors for short cable runs and junction box termination for longer cable runs
The 330801-28-00-050-03-02 PROXPAC® Proximity Transducer serves as a fully self-contained proximity probe system, providing conditioned vibration and position signals to machinery protection monitors. It continuously eliminates the need for an external extension cable and a separate Proximitor® housing by embedding the Proximitor® Sensor directly inside the assembly cover, converting the raw probe signal to a stable output at the transducer location.

The 330801-28-00-050-03-02 delivers essential proximity measurement functions for the entire monitoring path and is a critical component of the protection system, directly influencing the proper detection of radial vibration, thrust position, and shaft eccentricity. One 330801-28-00-050-03-02 assembly is required per monitoring point depending on the desired measurement coverage, and the unit occupies a compact external profile identical in mounting detail to the legacy 31000/32000 probe housings. The 330801-28-00-050-03-02 is always installed at the machine bearing housing through its 3/4-14 NPT thread, occupying the dedicated probe port position without additional standoff hardware.

For longer cable run applications, the monitoring system typically utilizes a junction box mounted at or near the machine skid to house terminal strips. In addition to direct wiring for short cable runs between the monitors and the 330801-28-00-050-03-02, this configuration provides organized access to Proximitor® signals at a convenient location adjacent to the rotating equipment. Field wiring is connected to terminal strips inside the junction box, delivering reliable signal distribution while preserving measurement integrity.

The 330801-28-00-050-03-02 Bently Nevada PROXPAC® Proximity Transducer may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 330801-28-00-050-03-02 PROXPAC® Proximity Transducer Manuals,Datasheets,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. All prices are shown in USD.
Bently Nevada 330801-28-00-050-03-02 PROXPAC® Proximity Transducer Specs

General

  • Manufacturer Bently Nevada
  • Model 330801-28-00-050-03-02
  • Condition New Original ready stock
  • Product Family 330801-28-00-050-03-00,330801-28-00-050-03-01
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Rotating Machinery Diagnostics: Continuous monitoring of radial vibration and axial (thrust) shaft position measurements on fluid-film bearing machines.
  • Compact Skid Packages: Ideal for industrial compressor packages, pumps, and fan monitoring systems where integrated sensing reduces external component footprints.
  • Severe Processing Environments: Widely deployed across petrochemical, chemical, and refining plants where field wiring must link directly from the asset to the main control system.
  • Speed & Phase Tracking: Serving as a Keyphasor reference for timing, speed synchronization, and phase angle tracking.
  • Ingress and Protection: The housing is composed of advanced molded Polyphenylene Sulfide (PPS) reinforced with glass and conductive fibers. It is explicitly rated for Type 4X and IP66 environments.
  • Electrical Shielding: The conductive fibers embedded within the PPS housing actively dissipate hazardous electrostatic charges and limit electromagnetic interference (EMI).
  • Internal Proximitor Sensor: Rated for continuous operation between -51°C to +100°C (-60°F to +212°F).
  • Probe Tip: Constructed from robust PPS capable of managing structural machinery temperatures spanning -35°C to +200°C.
  • Simplified Field Wiring: Field multi-conductor cables connect directly between the plant monitor/control system and the terminal block inside the PROXPAC assembly, cutting out extension cable layout steps.
  • Mounting & Engagement: Requires a standard 3/4-14 NPT mechanical mounting thread port. To maintain optimal performance, avoid exceeding a structural thread engagement length of 1.5 times the nominal thread diameter to prevent physical binding.
  • Target Cross-Talk Minimization: Ensure the 8 mm probe tip maintains a safe distance from internal machine counterbores or neighboring probes. Maintain a physical tip separation distance of at least 40 mm for axial layouts, and 38 mm for radial vibration tracking to limit signal interference below 50 mV.
  • System Power Integration: Requires a standard negative power supply voltage ranging from -17.5 Vdc to -26 Vdc under direct setups. For deployments utilizing safety barriers or galvanic isolators, a power feed of -23 Vdc to -26 Vdc is necessary.
Description
The Bently Nevada 330801-28-00-050-03-02 PROXPAC® Proximity Transducer is a fully self-contained proximity probe system engineered for demanding industrial environments where reliable vibration and position monitoring are critical. The 330801-28-00-050-03-02 integrates a 3300 XL 8 mm probe with multiple approvals directly into a rugged housing, eliminating the need for a separate extension cable and an external Proximitor® Sensor housing. This design significantly simplifies installation and reduces potential points of failure in the measurement chain.

The 330801-28-00-050-03-02 is specifically designed to address challenges associated with traditional proximity probe installations that require external Proximitor® Sensors and extension cables. By housing the Proximitor® Sensor inside the cover assembly, the 330801-28-00-050-03-02 eliminates signal degradation risks caused by long extension cables and removes the complexity of mounting additional sensor enclosures. This self-contained architecture ensures cleaner signal integrity and reduces overall system wiring complexity, making the 330801-28-00-050-03-02 an ideal solution for applications where space is limited and reliability is paramount.

The 330801-28-00-050-03-02 is widely applied across critical rotating machinery industries, including oil and gas, power generation, petrochemical processing, and pulp and paper manufacturing. It is commonly deployed on turbines, compressors, pumps, motors, and gearboxes to provide continuous radial vibration, thrust position, and shaft eccentricity monitoring. The 50 mm probe penetration depth of the 330801-28-00-050-03-02 ensures adequate reach for standard machinery bearing housings, while the absence of a standoff adapter streamlines the installation profile.
Alternative Names
330801 28 00 050 03 02 330801-28-00-050-03-00 330801-28-00-050-03-01 330801-28-00-050-02-02 330801-28-00-050-01-02 330801-28-00-050-00-02
Technical notes
The Bently Nevada 330801-28-00-050-03-02 PROXPAC® proximity sensor assembly requires no bracket adapter, features a probe penetration depth of 50 mm with 3/4-14 NPT mounting threads, and is equipped with an M20 connector and two end caps for easy environmental cabling, ensuring safe and reliable electrical connections in harsh industrial environments.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the Bently Nevada 330801-28-00-050-03-02 designed for?
The Bently Nevada 330801-28-00-050-03-02 is designed to simplify proximity measurement systems by integrating the Proximitor® Sensor directly into the housing. This compact design reduces installation complexity while providing reliable vibration, position, and speed monitoring.
What problems does the 330801-28-00-050-03-02 solve?
The transducer eliminates the need for a separate extension cable and external Proximitor® housing. This reduces wiring complexity, minimizes potential signal loss, lowers installation costs, and decreases the number of possible failure points.
How does the integrated Proximitor® Sensor improve system performance?
By placing the Proximitor® Sensor inside the housing, the system delivers a self-contained solution with fewer electrical connections. This improves signal reliability, simplifies maintenance, and enhances overall system dependability.
Why is the 330801-28-00-050-03-02 considered a self-contained proximity transducer?
The assembly combines the proximity probe and the Proximitor® Sensor into a single housing. Because no separate sensor enclosure or extension cable is required, installation becomes faster and more efficient.

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