Integrated Proximity Monitoring Solution for Critical Rotating Machinery
The Bently Nevada 330801-28-00-050-03-02 PROXPAC Proximity Transducer is a compact, all-in-one eddy current proximity measurement assembly designed to simplify the installation of shaft vibration and position monitoring systems. Unlike conventional proximity transducer installations that require separate probe housings, extension cables, and Proximitor sensors, the PROXPAC design integrates the 3300 XL Proximitor Sensor directly into the housing, significantly reducing installation complexity and minimizing potential failure points.
The 330801-28-00-050-03-02 configuration is engineered for demanding industrial environments where reliability, space efficiency, and easy maintenance are essential. Its rugged Polyphenylene Sulfide (PPS) housing provides excellent resistance to corrosion, vibration, moisture, and harsh weather conditions while meeting Type 4X and IP66 environmental protection ratings. This integrated transducer assembly is widely deployed on turbines, compressors, pumps, generators, and other critical rotating assets that require continuous shaft vibration and position monitoring.
With proven Bently Nevada measurement technology, the PROXPAC assembly helps maintenance teams improve equipment availability, reduce installation time, and support predictive maintenance programs with highly reliable displacement measurements.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330801-28-00-050-03-02 |
| Product Type | PROXPAC Proximity Transducer |
| Series | 330801 PROXPAC XL |
| Measurement Principle | Eddy Current Proximity Measurement |
| Integrated Components | 3300 XL Proximitor Sensor and Probe Housing |
| Probe Type | 3300 XL 8 mm Proximity Probe |
| Probe Penetration | 50 mm |
| Probe Output | Shaft Vibration and Position Measurement |
| Housing Material | Glass-Fiber Reinforced Polyphenylene Sulfide (PPS) |
| Environmental Rating | Type 4X / IP66 |
| Mounting Thread | 3/4-14 NPT |
| Fittings Option | One M20 Fitting with Two Sealing Plugs |
| Operating Supply Voltage | -17.5 to -26 VDC |
| Maximum Current Consumption | 12 mA |
| Output Resistance | 50 Ω |
| Operating Temperature (Housing) | -51°C to +100°C |
| Probe Temperature Range | -51°C to +177°C |
| Dimensions | Approx. 235 × 120 × 95 mm (assembly) |
| Weight | Approximately 2.8 kg |
Typical Applications
The 330801-28-00-050-03-02 is designed for permanent installation on mission-critical rotating equipment where accurate shaft displacement and vibration monitoring are essential for operational reliability.
Typical applications include:
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Steam turbines
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Gas turbines
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Centrifugal compressors
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Turbo expanders
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Process pumps
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Industrial generators
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Large electric motors
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Gearboxes
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Petrochemical processing equipment
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Power generation facilities
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Oil and gas production platforms
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Pulp and paper machinery
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Mining equipment
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Balance-of-plant rotating machinery
Its integrated construction minimizes wiring requirements while providing highly stable shaft vibration and axial position measurements for continuous machinery protection.
Key Product Benefits
The PROXPAC 330801-28-00-050-03-02 is engineered to reduce installation effort while delivering the dependable performance expected from Bently Nevada machinery monitoring products.
Key advantages include:
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Integrated Proximitor sensor eliminates separate external housing
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No extension cable required between probe and sensor
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Compact design reduces installation space requirements
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PPS housing offers outstanding corrosion and impact resistance
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Type 4X and IP66 protection for harsh industrial environments
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Simplified wiring lowers installation and maintenance costs
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High measurement accuracy for shaft vibration and position
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Suitable for continuous online condition monitoring
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Excellent resistance to vibration, moisture, and contaminants
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Fully compatible with Bently Nevada monitoring and protection systems
Technical FAQs
1. What is the primary function of the 330801-28-00-050-03-02?
It measures shaft vibration and shaft position using eddy current technology while integrating the probe housing and Proximitor sensor into one compact assembly.
2. What makes the PROXPAC design different from a conventional proximity system?
The PROXPAC assembly integrates the Proximitor sensor directly into the housing, eliminating the need for a separate sensor enclosure and extension cable.
3. Which probe is used in this model?
This configuration utilizes a 3300 XL 8 mm proximity probe.
4. What does the "050" option indicate?
The 050 configuration specifies a 50 mm probe penetration length, allowing installation flexibility for various machinery applications.
5. What environmental protection does the housing provide?
The enclosure is rated Type 4X and IP66, providing protection against dust, water ingress, and harsh outdoor environments.
6. Which industries commonly use this transducer?
It is widely used in power generation, petrochemical processing, oil and gas, mining, marine, and heavy industrial facilities.
7. What measurement parameters can the system monitor?
It measures shaft vibration, shaft position, thrust position, and other dynamic displacement parameters depending on the monitoring system configuration.
8. Does the integrated design improve reliability?
Yes. Eliminating the extension cable reduces connection points and potential failure sources, improving long-term system reliability.
9. What are the approximate dimensions and weight?
The complete assembly measures approximately 235 × 120 × 95 mm and weighs about 2.8 kg, making it suitable for rugged industrial installations.
10. Why choose the 330801-28-00-050-03-02?
Its integrated construction, reduced installation time, superior environmental protection, and proven Bently Nevada measurement technology make it an excellent choice for reliable machinery protection and predictive maintenance.
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