1. Product Introduction
The Bently Nevada 330881-28-00-050-03-02 is a high-precision proximity probe assembly designed for continuous monitoring of rotating machinery shaft displacement, vibration, and position changes. It is part of the 3300 XL Proximity Transducer System series and is mainly used in industrial applications requiring accurate measurement, stable performance, and reliable long-term operation.
The product adopts eddy current sensing technology, providing a non-contact measurement method between the probe tip and the rotating shaft. Through electromagnetic field variation detection, the sensor can accurately identify small changes in shaft position and convert them into stable electrical signals for machinery monitoring systems.
The 330881-28-00-050-03-02 is designed as a critical sensing component for machinery protection and condition monitoring applications. It provides real-time shaft displacement information that helps maintenance engineers analyze machine operating conditions, identify abnormal vibration trends, and perform predictive maintenance activities.
This proximity probe assembly is commonly used on large rotating equipment such as steam turbines, gas turbines, compressors, generators, pumps, and industrial motors. These machines require precise shaft monitoring because abnormal rotor movement, excessive vibration, or unexpected displacement changes may indicate mechanical faults.
The product configuration combines a precision proximity probe with a cable assembly suitable for industrial installation. The compact cable length provides flexibility when installing sensors in locations where the monitoring electronics are positioned close to the machinery.
The non-contact sensing design eliminates physical contact between the sensor and rotating components. This reduces mechanical wear, improves measurement repeatability, and extends operating life in demanding industrial environments.
The 330881-28-00-050-03-02 provides a reliable solution for vibration monitoring, shaft position measurement, and rotating machinery protection systems.
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2. Product Basic Information
| Item |
Description |
| Model |
Bently Nevada 330881-28-00-050-03-02 |
| Brand |
Bently Nevada |
| Product Series |
3300 XL Proximity Transducer System |
| Product Type |
Proximity Probe Assembly |
| Sensor Technology |
Eddy Current Non-contact Measurement |
| Main Function |
Shaft displacement and vibration monitoring |
| Measurement Method |
Electromagnetic gap measurement |
| Installation Type |
Threaded industrial mounting |
| Application Field |
Rotating machinery condition monitoring |
| Output Signal |
Analog proportional displacement signal |
| Main Purpose |
Machinery protection and predictive maintenance |
| Typical Equipment |
Turbines, compressors, generators, pumps, motors |
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3. Detailed Technical Parameters
| Parameter |
Specification |
| Model |
330881-28-00-050-03-02 |
| Product Series |
3300 XL Proximity Transducer System |
| Sensor Type |
Eddy Current Proximity Probe Assembly |
| Probe Diameter |
Approximately 8 mm |
| Probe Design |
Industrial proximity sensing probe |
| Measurement Principle |
Eddy current electromagnetic sensing |
| Measurement Method |
Non-contact shaft displacement measurement |
| Measurement Target |
Radial vibration, shaft position, rotor movement |
| Sensitivity |
Approximately 7.87 V/mm |
| Operating Voltage |
-24 VDC nominal |
| Output Signal |
Voltage proportional to probe gap distance |
| Frequency Response |
Suitable for high-speed rotating machinery |
| Accuracy |
High precision displacement measurement |
| Probe Material |
Stainless steel industrial alloy |
| Cable Configuration |
Integrated probe cable assembly |
| Cable Length |
Approximately 0.5 meter |
| Connector Type |
Industrial proximity system connector |
| Mounting Method |
Threaded mechanical installation |
| Operating Temperature |
Approximately -40°C to +177°C depending on installation conditions |
| Environmental Capability |
Resistant to vibration, temperature changes, and industrial environments |
| Signal Stability |
Stable continuous measurement output |
| Application Equipment |
Turbines, compressors, generators, pumps, motors |
| Dimensions |
Approx. 8 mm probe diameter × 80 mm probe body + 0.5 m cable |
| Weight |
Approximately 0.30 kg |
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4. Product Structure Description
Proximity Probe Sensor Element
The proximity probe is the core sensing component responsible for detecting shaft movement.
The probe creates an electromagnetic field around the shaft surface. When the shaft moves closer or farther from the probe, the electromagnetic field changes.
The sensor converts these changes into electrical output signals that represent actual shaft displacement.
Main characteristics:
- High precision shaft measurement
- Non-contact sensing operation
- Stable measurement output
- High repeatability
- Long operating service life
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Cable Assembly
The cable assembly provides the electrical connection between the probe and monitoring equipment.
The cable design maintains signal quality and provides installation flexibility for different machinery configurations.
Main functions:
- Reliable signal transmission
- Stable electrical performance
- Flexible installation arrangement
- Reduced signal loss
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Mechanical Mounting Structure
The mechanical design allows secure installation on industrial machinery.
Main features:
- Strong mechanical stability
- Vibration resistance
- Accurate probe positioning
- Long-term installation reliability
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System Integration Capability
The product can be integrated into machinery monitoring systems for continuous equipment evaluation.
It supports:
- Shaft vibration analysis
- Rotor displacement monitoring
- Equipment condition assessment
- Machinery protection applications
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5. Product Applications
Steam Turbine Monitoring
Steam turbines require continuous shaft monitoring to maintain reliable operation.
The product helps measure:
- Shaft displacement
- Rotor vibration
- Mechanical imbalance
- Position changes
It provides important information for identifying abnormal operating conditions.
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Gas Turbine Applications
Gas turbines operate under high-speed and high-temperature conditions.
The product supports:
- Rotor movement detection
- Shaft position monitoring
- Vibration analysis
- Mechanical condition evaluation
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Compressor Monitoring
Compressors require accurate monitoring because mechanical faults can affect production stability.
The product helps detect:
- Excessive shaft vibration
- Rotor instability
- Alignment issues
- Mechanical degradation
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Generator Applications
Generators require reliable rotor condition measurement.
The product provides monitoring capability for:
- Shaft movement
- Rotor position
- Mechanical stability
- Operating condition analysis
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Pumps and Motors
Large pumps and motors benefit from continuous shaft monitoring.
The product supports detection of:
- Shaft imbalance
- Mechanical looseness
- Increased vibration
- Equipment wear
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6. Product Advantages
High Measurement Accuracy
The product provides precise shaft displacement measurement through advanced eddy current sensing technology.
It can detect small movement changes and provide reliable monitoring data for critical machinery.
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Non-Contact Measurement Technology
The sensor does not physically contact the rotating shaft.
Advantages:
- No mechanical wear
- Longer service life
- Improved measurement stability
- Reduced maintenance requirements
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Compact Cable Configuration
The 0.5 meter cable configuration provides flexible installation options.
Benefits:
- Suitable for compact machinery layouts
- Easier installation
- Reduced wiring complexity
- Improved system integration
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Stable Long-Term Operation
The product is designed for continuous industrial operation.
It maintains reliable signal output during long operating cycles.
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Industrial Environmental Resistance
The sensor is suitable for demanding working environments.
It provides stable operation under:
- Continuous vibration
- Temperature changes
- Heavy machinery conditions
- Extended operating periods
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Machinery Protection Capability
The product supports early identification of abnormal equipment conditions.
It helps with:
- Predictive maintenance
- Fault detection
- Reduced equipment downtime
- Improved machinery reliability
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7. Brand Information
| Item |
Description |
| Brand |
Bently Nevada |
| Industry Field |
Industrial Machinery Monitoring |
| Main Product Categories |
Proximity Sensors, Vibration Monitoring Equipment, Machinery Protection Systems |
| Application Industries |
Energy, Manufacturing, Heavy Industry, Process Equipment |
| Product Characteristics |
High accuracy, stable operation, industrial durability |
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8. Product Series Information
3300 XL Proximity Transducer System Series
The 3300 XL Proximity Transducer System series is designed for accurate monitoring of critical rotating machinery.
The series provides reliable shaft displacement and vibration measurement for machinery protection and predictive maintenance applications.
Main features:
- Eddy current non-contact sensing technology
- High measurement accuracy
- Stable analog output
- Excellent repeatability
- Strong environmental resistance
- Long operating life
The 330881-28-00-050-03-02 belongs to the 3300 XL proximity probe assembly family.
This model is designed for applications requiring precise shaft measurement, compact installation, and reliable continuous monitoring.
It provides an effective sensing solution for rotating equipment operating in industrial environments.
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9. Recommended Same Series or Related Models
| Model |
Series |
Main Parameters |
Dimensions |
Weight (kg) |
| 330881-28-00-050-03-02 |
3300 XL Proximity Probe Series |
8 mm proximity probe with 0.5 m cable configuration |
Approx. 8 mm diameter × 80 mm probe + 0.5 m cable |
0.30 kg |
| 330801-28-00-050-03-02 |
3300 XL Proximity Probe Series |
Similar 8 mm probe assembly configuration |
Approx. 8 mm diameter × 80 mm probe + 0.5 m cable |
0.30 kg |
| 330704-00-050-10-02-05 |
3300 XL Proximity Probe Series |
Compact proximity probe assembly |
Approx. 8 mm diameter × 80 mm probe + 0.5 m cable |
0.28 kg |
| 330707-00-10-10-02-00 |
3300 XL Proximity Probe Series |
Industrial proximity probe assembly |
Approx. 8 mm diameter × 80 mm probe + 1 m cable |
0.32 kg |
| 330780-X0-00 |
3300 XL Proximity Transducer Series |
Precision proximity transducer sensor |
Approx. 8 mm diameter × 80 mm probe with cable assembly |
0.35 kg |
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10. Recommended Popular Models From The Same Brand
| Model |
Series |
Main Parameters |
Dimensions |
Weight (kg) |
| 3500/42M 140734-01 |
3500 Monitoring System |
Four-channel vibration monitoring module supporting proximity inputs |
Approx. 241 mm × 24 mm × 119 mm |
0.60 kg |
| 3500/22M 138607-01 |
3500 Monitoring System |
Machinery communication interface module |
Approx. 241 mm × 24 mm × 119 mm |
0.55 kg |
| 330180-50-00 |
3300 XL Series |
High precision 8 mm proximity probe |
Approx. 8 mm diameter × 1000 mm length |
0.27 kg |
| 330130-040-00-00 |
3300 XL Cable Series |
Extension cable for proximity monitoring systems |
Approx. 4000 mm cable length |
0.20 kg |
| 3300 XL 8 mm Proximity Probe |
3300 XL Series |
Standard industrial proximity sensing component |
Approx. 8 mm diameter × different length options |
0.25 kg |
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11. Product Selection Summary
The Bently Nevada 330881-28-00-050-03-02 is a precision proximity probe assembly designed for accurate monitoring of rotating machinery.
The product uses eddy current non-contact sensing technology to provide reliable shaft displacement and vibration measurement. Its compact cable configuration makes it suitable for installations requiring close sensor placement and stable signal transmission.
The product is suitable for critical rotating equipment including turbines, compressors, generators, pumps, and motors.
Main advantages:
- High precision shaft displacement monitoring
- Non-contact measurement technology
- Compact installation design
- Stable signal output
- Strong environmental durability
- Long operating service life
As part of the 3300 XL Proximity Transducer System series, the 330881-28-00-050-03-02 provides a dependable sensing solution for machinery condition monitoring, predictive maintenance, and rotating equipment protection applications.
