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- Bently Nevada
- 330881-28-06-140-03-02
- PROXPAC XL Proximity Transducer Assembly
- USA
- 8 mm
- 0.33kg
- Xiamen, China
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330881-28-06-140-03-02 Technical Overview, Specifications, Applications, Advantages and Related Model Guide
Product Overview
The 330881-28-06-140-03-02 is a high-precision non-contact proximity probe used for continuous monitoring of shaft displacement and vibration in rotating machinery. It is designed for industrial environments where real-time condition monitoring is required to ensure equipment safety, operational stability, and predictive maintenance capability.
This probe operates using eddy current sensing technology, allowing it to measure the distance between the probe tip and a conductive metal target without any physical contact. This design eliminates mechanical wear, ensuring long-term measurement stability and consistent signal output even under continuous operation.
The model is commonly deployed in machinery protection systems where accurate measurement of shaft position, radial vibration, axial movement, and eccentricity is critical. It is particularly suited for high-speed rotating equipment operating under heavy load conditions and harsh environmental exposure.
The 330881-28-06-140-03-02 is engineered for long service life and stable performance in industrial applications such as turbines, compressors, pumps, generators, motors, and other rotating machinery requiring continuous monitoring.
Brand
Bently Nevada
The brand associated with this product is widely recognized in the field of industrial machinery monitoring and protection systems. It specializes in vibration analysis, rotor dynamics monitoring, shaft displacement measurement, and predictive maintenance technologies.
Its products are designed for mission-critical industrial environments where equipment reliability directly impacts safety, production efficiency, and operational cost control.
Product Series
3300 XL 8 mm Proximity Transducer Series
The 330881-28-06-140-03-02 belongs to the 3300 XL 8 mm proximity transducer family, a widely used industrial measurement system designed for non-contact displacement sensing.
This series includes proximity probes, extension cables, and signal conditioning modules that work together to provide accurate shaft vibration and position measurement.
The system is known for its high linearity, excellent temperature stability, strong EMI resistance, and long-term reliability in continuous monitoring applications.
It is commonly used in condition monitoring systems for rotating machinery where precise and stable measurement data is required for predictive diagnostics and machinery protection.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 330881-28-06-140-03-02 |
| Product Type | Proximity Probe |
| Series | 3300 XL 8 mm |
| Measurement Principle | Eddy Current Non-Contact Measurement |
| Probe Diameter | 8 mm |
| Probe Length | Approximately 140 mm |
| Measured Variables | Shaft Vibration, Axial Position, Radial Displacement, Eccentricity |
| Target Material | Conductive Metal Surface |
| Output Type | Analog Displacement Signal |
| Sensitivity | High Precision |
| Linearity | Excellent |
| Repeatability | High Stability |
| Frequency Response | Fast Dynamic Response |
| Housing Material | Stainless Steel |
| Cable Configuration | Factory Integrated |
| Connector Type | Industrial Standard |
| Mounting Method | Threaded Installation |
| Environmental Resistance | Oil, Dust, Moisture, Vibration Resistant |
| Temperature Stability | Wide Industrial Range |
| EMI Resistance | High Immunity |
| Shock Resistance | High Durability |
| Corrosion Resistance | Excellent |
| Maintenance Requirement | Low |
| Operating Mode | Continuous Monitoring |
| Service Life | Long-Term Industrial Use |
| Dimensions | Probe Diameter: 8 mm; Length: 140 mm |
| Weight (kg) | Approximately 0.33 kg |
Product Features
The 330881-28-06-140-03-02 is designed for stable and accurate measurement of shaft movement in rotating machinery without physical contact. This eliminates wear-related degradation and ensures long-term reliability.
Its eddy current sensing mechanism provides highly sensitive detection of small changes in shaft position, enabling early identification of mechanical imbalance, misalignment, looseness, or bearing degradation.
The stainless-steel probe housing improves durability and allows the sensor to operate reliably in harsh industrial environments exposed to oil mist, vibration, and temperature variations.
The probe offers excellent linear response characteristics, ensuring that measurement output remains proportional and consistent across its operating range.
Its compact and robust design makes it suitable for installation in tight mechanical spaces while maintaining full measurement performance.
The fast response capability allows real-time tracking of shaft dynamics, which is essential for machinery protection systems that require immediate fault detection.
Working Principle
The probe operates based on eddy current induction technology.
A high-frequency electromagnetic field is generated at the sensing tip of the probe. When a conductive rotating shaft enters this field, eddy currents are induced in the metal surface.
These eddy currents alter the impedance of the probe’s electromagnetic field. The system detects this change and converts it into an electrical signal proportional to the distance between the probe tip and the shaft surface.
Because the system does not require physical contact, it eliminates mechanical wear and allows continuous long-term monitoring with high stability and repeatability.
Typical Applications
The 330881-28-06-140-03-02 is widely used in industries where rotating machinery reliability is critical.
Typical application areas include:
- Gas turbine monitoring systems
- Steam turbine vibration monitoring
- Hydro turbine shaft displacement measurement
- Centrifugal compressor protection
- Industrial pump condition monitoring
- Electric motor vibration analysis
- Generator shaft position monitoring
- Fan and blower systems
- Gearbox shaft monitoring
- Refinery rotating equipment
- Petrochemical processing machinery
- Offshore drilling platforms
- LNG production facilities
- Power generation plants
- Steel manufacturing equipment
- Cement production systems
- Mining machinery
- Paper production lines
- Chemical processing plants
- Marine propulsion systems
These applications rely on continuous monitoring to ensure safe operation, reduce downtime, and extend equipment life.
Product Advantages
The 330881-28-06-140-03-02 offers several operational and performance advantages in industrial environments.
Its non-contact measurement method eliminates physical wear, significantly improving long-term stability and reducing maintenance requirements.
The probe provides high accuracy and repeatability, making it suitable for precision machinery monitoring where small changes in shaft position must be detected early.
Its rugged stainless-steel construction ensures resistance to corrosion, vibration, and harsh industrial conditions.
The sensor delivers fast response performance, enabling real-time detection of mechanical changes and improving protection system reaction time.
Strong electromagnetic compatibility ensures stable operation even in electrically noisy industrial environments.
The compact design simplifies installation in constrained spaces without compromising measurement performance.
Long service life reduces replacement frequency and lowers overall lifecycle cost of monitoring systems.
Recommended Models (Same Series / Related)
| Model | Product Type | Probe Diameter | Length | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 330881-28-06-105-00-02 | Proximity Probe | 8 mm | 105 mm | 8 × 105 mm | 0.30 kg |
| 330881-28-06-120-03-02 | Proximity Probe | 8 mm | 120 mm | 8 × 120 mm | 0.31 kg |
| 330881-28-06-140-03-02 | Proximity Probe | 8 mm | 140 mm | 8 × 140 mm | 0.33 kg |
| 330881-28-06-145-00-02 | Proximity Probe | 8 mm | 145 mm | 8 × 145 mm | 0.34 kg |
| 330880-28-00-050-03-02 | Proximity Probe | 8 mm | 50 mm | 8 × 50 mm | 0.28 kg |
Popular Models from Same Brand
| Model | Product Type | Series | Function | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 3500/42M | Monitoring Module | 3500 Series | Vibration Monitoring | Rack Module Standard | 0.90 kg |
| 3500/22M | Communication Module | 3500 Series | System Data Interface | Rack Module Standard | 0.75 kg |
| 3500/15 | Power Supply Module | 3500 Series | System Power Supply | Rack Module Standard | 1.10 kg |
| 330180-90-00 | Proximitor Sensor | 3300 XL Series | Signal Conditioning | 120×80×40 mm | 0.50 kg |
| 330130-040-00-00 | Extension Cable | 3300 XL Series | Signal Transmission | 4 m Cable Length | 0.45 kg |
Summary
The 330881-28-06-140-03-02 is a precision-engineered proximity probe designed for continuous monitoring of rotating machinery. As part of the 3300 XL 8 mm proximity transducer system, it provides stable, accurate, and reliable shaft displacement measurement in demanding industrial environments.
Its non-contact eddy current sensing principle ensures long-term measurement stability without mechanical wear, making it ideal for predictive maintenance and machinery protection applications.
With its durable construction, fast response characteristics, high measurement accuracy, and strong environmental resistance, this model is widely used in turbines, compressors, pumps, generators, and other critical rotating equipment across heavy industries where operational reliability is essential.