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- Bently Nevada
- 330878-91-05
- 3300 XL 50 mm Proximitor Sensor
- USA
- 113 mm × 36 mm × 36 mm
- 0.28kg
- Xiamen, China
- New & In Stock
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Technical Specification Report
330878-91-05 Proximity Transducer System
1. Product Introduction
The model 330878-91-05 is a high-precision eddy current proximity transducer system used for continuous monitoring of shaft vibration, displacement, and position in rotating machinery. It is designed to operate under a non-contact measurement principle, enabling accurate detection of micro-level shaft movement without physical wear or mechanical interference.
This system is widely used in machinery protection and condition monitoring environments where continuous real-time vibration data is required. It is typically applied in turbines, compressors, pumps, generators, and other high-speed rotating equipment where operational reliability is critical.
The system converts shaft displacement into proportional electrical signals, which are used for vibration analysis, alarm logic, and predictive maintenance systems.
2. Brand Information
The product belongs to a globally recognized industrial condition monitoring and machinery protection technology manufacturer specializing in vibration monitoring systems, proximity sensing technologies, and predictive maintenance instrumentation.
Its solutions are widely deployed in industries requiring high reliability and continuous operation, including:
- Power generation
- Oil and gas production
- Petrochemical processing
- Heavy industrial manufacturing
- Marine and offshore systems
3. Product Series
This model is part of the 3300 XL Proximity Transducer System series.
The series is designed for:
- Non-contact vibration and displacement measurement
- High-accuracy rotating machinery monitoring
- Long-term industrial reliability
- Harsh environment resistance
- Integration with protection and diagnostic systems
4. Technical Parameters
Parameter Table
| Parameter | Specification |
|---|---|
| Model | 330878-91-05 |
| Measurement Principle | Eddy current proximity sensing |
| System Type | Non-contact vibration and displacement monitoring |
| Probe Type | Industrial proximity transducer assembly |
| Output Signal | Linear voltage proportional output |
| Frequency Response | High-frequency dynamic vibration tracking |
| Operating Temperature | -35°C to +177°C (system dependent) |
| Housing Material | Stainless steel / industrial alloy |
| Cable Configuration | Integrated industrial extension cable |
| Cable Code | 91 configuration variant |
| Mounting Type | Threaded industrial mounting design |
| Calibration | Factory calibrated linear response |
| Signal Stability | High long-term stability |
| EMI Resistance | Strong electromagnetic interference resistance |
| Environmental Protection | Industrial sealed structure |
| Measurement Range | Standard displacement monitoring range |
| Configuration Variant | 91 series design |
| Cable Length Code | 05 variant |
| Dimensions | 113 mm × 36 mm × 36 mm (approx.) |
| Weight | 0.28 kg |
| Application Environment | Heavy-duty rotating machinery systems |
5. Product Features
This transducer system is designed for stable operation in demanding industrial environments.
Key features include:
- Non-contact measurement eliminates mechanical wear
- High sensitivity to micro-level shaft displacement
- Stable output under temperature variation
- Strong resistance to oil, dust, and moisture
- Suitable for continuous 24/7 operation
- Long-term signal stability with minimal drift
- High compatibility with monitoring systems
6. Product Applications
The model is widely used in rotating machinery condition monitoring systems, including:
- Steam turbine vibration monitoring
- Gas turbine shaft displacement measurement
- Centrifugal compressor monitoring systems
- Industrial pump condition monitoring
- Generator rotor vibration analysis
- Gearbox fault detection systems
- Large motor monitoring systems
- Hydro turbine condition monitoring
It is commonly deployed in predictive maintenance systems to detect early mechanical faults and prevent unexpected downtime.
7. Product Advantages
This model provides several key advantages in industrial applications:
- High measurement accuracy in dynamic environments
- Reliable long-term operational stability
- Strong electromagnetic interference resistance
- Excellent performance under high temperature conditions
- Suitable for continuous industrial operation
- Stable signal transmission over long cable distances
- Easy integration into existing monitoring systems
8. Related Models (Same Series / Similar Configuration)
Related Model Table
| Model | Description | Key Parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330878-91-05 | Standard 91/05 configuration probe | Eddy current vibration monitoring | 113 × 36 × 36 mm | 0.28 |
| 330878-91-00 | Base configuration model | Standard sensitivity output | 113 × 36 × 36 mm | 0.28 |
| 330878-91-01 | Improved calibration version | Enhanced linear stability | 114 × 36 × 36 mm | 0.28 |
| 330878-91-02 | High stability variant | Reduced signal drift | 115 × 37 × 37 mm | 0.29 |
| 330878-91-10 | Extended temperature version | High thermal resistance | 117 × 37 × 37 mm | 0.30 |
9. Popular Models (Same Product Family)
Popular Model Table
| Model | Description | Key Parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330780-91-00 | Standard proximity probe system | General vibration monitoring | 70 × 20 × 20 mm | 0.10 |
| 330850-91-00 | High precision displacement probe | Enhanced sensitivity measurement | 85 × 25 × 25 mm | 0.13 |
| 330180-91-00 | Industrial vibration probe | Rotor monitoring applications | 80 × 25 × 25 mm | 0.12 |
| 330880-91-00 | Heavy-duty high temperature probe | Extreme environment operation | 90 × 30 × 30 mm | 0.15 |
| 330905-91-00 | Advanced vibration sensor system | High-frequency response capability | 88 × 28 × 28 mm | 0.14 |
10. Summary
The 330878-91-05 proximity transducer system is designed for high-precision vibration and displacement monitoring in rotating machinery. It delivers stable non-contact measurement performance suitable for continuous industrial operation in harsh environments.
Its robust structure, high signal stability, and strong environmental resistance make it a reliable component in modern machinery protection and predictive maintenance systems.