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- 330801-28-04-090-03-02
- PROXPAC XL Proximity Transducer
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3300 XL 11 mm Proximity Probe
Model: 330801-28-04-090-03-02
Brand Information
Brand: Bently Nevada
Series: 3300 XL 11 mm Proximity Transducer System
Product Type: Eddy Current Proximity Probe
Application Category: Rotating Machinery Monitoring and Protection
The 330801-28-04-090-03-02 is a heavy-duty industrial proximity probe designed for continuous, high-accuracy monitoring of shaft vibration and displacement in rotating machinery. It belongs to the 3300 XL 11 mm platform, which is widely used in critical machinery protection systems across power generation, oil & gas, petrochemical, and heavy industrial sectors.
This probe is designed to deliver stable, non-contact measurement under harsh operating conditions where vibration, temperature variation, contamination, and electromagnetic interference are present.
Product Introduction
The 330801-28-04-090-03-02 operates based on eddy current sensing technology. The probe generates a high-frequency electromagnetic field at the tip, which interacts with a conductive target surface such as a rotating shaft. Any change in the gap distance between the probe and the shaft results in a proportional change in the electrical signal output.
This non-contact measurement principle eliminates mechanical wear and ensures stable long-term operation. It is particularly suitable for continuous monitoring of rotating equipment such as turbines, compressors, motors, pumps, and generators.
The 90 mm probe length configuration provides extended installation reach, making it suitable for machinery with deeper mounting positions or thicker casings. This allows engineers to install the probe in more complex mechanical layouts without compromising measurement accuracy.
The probe continuously transmits vibration and displacement data to monitoring systems, enabling early detection of mechanical issues such as imbalance, misalignment, bearing wear, and shaft instability.
Product Features
- Eddy current non-contact sensing technology
- High accuracy shaft vibration measurement
- Extended probe body design (90 mm class)
- Excellent long-term stability
- Industrial-grade stainless steel housing
- High resistance to oil, dust, and moisture
- Strong EMI (electromagnetic interference) protection
- Fast dynamic response capability
- Suitable for harsh industrial environments
- Continuous real-time monitoring
- High vibration and shock resistance
- Compatible with machinery protection systems
- Supports predictive maintenance strategies
- Stable performance under temperature variation
- Long service life design
Technical Specifications
General Specifications
| Parameter | Specification |
|---|---|
| Model | 330801-28-04-090-03-02 |
| Product Type | Proximity Probe |
| Series | 3300 XL 11 mm Series |
| Measurement Principle | Eddy Current |
| Probe Diameter | 11 mm |
| Probe Length Code | 90 mm |
| Housing Material | Stainless Steel |
| Probe Tip Material | High-performance polymer |
| Mounting Type | Threaded installation |
| Connector Type | Miniature coaxial |
| Output Signal | Analog dynamic signal |
| Function | Shaft vibration & displacement monitoring |
| Operating Temperature | -52°C to +177°C |
| Storage Temperature | -55°C to +200°C |
| Environmental Protection | Oil, dust, moisture resistant |
| Vibration Resistance | Industrial grade |
| Shock Resistance | Industrial grade |
| EMI Protection | High immunity |
| Approx. Dimensions | 11 × 11 × 128 mm |
| Approx. Weight | 0.33 kg |
Mechanical Specifications
| Parameter | Value |
|---|---|
| Probe Diameter | 11 mm |
| Probe Length | 90 mm |
| Total Length | ~128 mm |
| Construction | Stainless steel body |
| Mounting | Threaded |
| Connector | Coaxial type |
| Structural Type | Extended reach design |
| Weight | ~0.33 kg |
Electrical Specifications
| Parameter | Value |
|---|---|
| Sensing Technology | Eddy current |
| Signal Output | Analog voltage signal |
| Sensitivity | High precision |
| Linearity | High |
| Repeatability | Excellent |
| Dynamic Response | Fast |
| Noise Immunity | High |
| Continuous Operation | Supported |
Product Applications
The 330801-28-04-090-03-02 is used in critical rotating equipment monitoring systems where precise shaft movement detection is required.
Power Generation
- Steam turbines
- Gas turbines
- Hydroelectric generators
- Auxiliary turbine systems
Oil & Gas Industry
- Centrifugal compressors
- Gas pipeline stations
- LNG processing equipment
- Offshore production units
Petrochemical Industry
- Refinery compressors
- Process pumps
- Industrial blowers
- Reactor circulation systems
Industrial Manufacturing
- Large electric motors
- Gearboxes
- Production machinery
- High-speed rotating systems
Mining & Heavy Industry
- Conveyor drive systems
- Grinding mills
- Heavy-duty fans
- Ore processing machinery
Product Advantages
High Measurement Accuracy
Provides precise displacement data, enabling early detection of mechanical faults and improving machinery reliability.
Extended Probe Design
The 90 mm configuration allows deeper installation into machinery housings, increasing flexibility in engineering design.
Non-Contact Operation
No physical contact with the shaft reduces wear and ensures stable long-term operation.
Strong Environmental Resistance
Designed to withstand oil mist, dust, vibration, humidity, and temperature fluctuations.
Fast Dynamic Response
Accurately tracks rapid shaft movement, suitable for high-speed rotating equipment.
Long Service Life
Industrial-grade materials ensure durability and stable long-term performance.
Improved Machinery Protection
Supports early fault detection and reduces unplanned downtime.
Reduced Maintenance Cost
Enables predictive maintenance strategies and reduces repair frequency.
Product Series Overview
The 330801-28-04-090-03-02 belongs to the 3300 XL 11 mm Proximity Transducer System, a widely used industrial monitoring platform for rotating machinery protection.
The system includes:
- 11 mm proximity probes
- Extension cables
- Proximitor signal conditioners
- Monitoring modules
- Machinery protection systems
- Vibration diagnostic tools
This ecosystem provides complete monitoring coverage for critical rotating assets.
Recommended Models from Same Series
| Model | Description | Dimensions (Approx.) | Weight (kg) | Probe Diameter |
|---|---|---|---|---|
| 330801-28-00-050-03-02 | Compact probe | 11 × 11 × 88 mm | 0.24 | 11 mm |
| 330801-28-04-050-00-02 | Standard probe | 11 × 11 × 88 mm | 0.24 | 11 mm |
| 330801-28-04-090-03-02 | Extended 90 mm probe | 11 × 11 × 128 mm | 0.33 | 11 mm |
| 330801-28-00-070-03-02 | Medium probe | 11 × 11 × 108 mm | 0.29 | 11 mm |
| 330801-50-00-120-03-02 | Heavy-duty long probe | 11 × 11 × 158 mm | 0.39 | 11 mm |
Recommended Popular Models from Same Brand
| Model | Product Type | Function | Dimensions (Approx.) | Weight (kg) |
|---|---|---|---|---|
| 330780-50-00 | Proximity probe | Vibration monitoring | 80 × 8 × 8 mm | 0.18 |
| 330851-02-000-050-90-00-05 | Extension cable | Signal transmission | 500 mm length | 0.15 |
| 330130-085-00-00 | Proximitor sensor | Signal conditioning | 120 × 80 × 40 mm | 0.45 |
| 3500/42M | Monitoring module | Vibration protection | 241 × 24 × 240 mm | 0.95 |
| 3500/22M | Communication module | System integration | 241 × 24 × 240 mm | 0.88 |
Typical Monitoring Functions
When integrated into a full protection system, the 330801-28-04-090-03-02 supports:
- Radial shaft vibration monitoring
- Axial displacement measurement
- Rotor eccentricity detection
- Shaft position monitoring
- Bearing condition evaluation
- Differential expansion tracking
- Machinery health diagnostics
- Alarm and shutdown protection
- Predictive maintenance analysis
- Performance trend monitoring
Summary
The 330801-28-04-090-03-02 is a high-performance 11 mm proximity probe designed for accurate, stable, and long-term monitoring of rotating machinery. Its extended 90 mm design improves installation flexibility, while its eddy current technology ensures precise non-contact measurement under demanding industrial conditions.
It is widely used in turbines, compressors, pumps, motors, and other critical rotating equipment where reliability, safety, and predictive maintenance are essential.