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- Bently Nevada
- 330878-91-00
- 3300 XL 50 mm Front Sensor
- USA
- 9.0 meters
- 3 kg
- Xiamen, China
- New & In Stock
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview
The Bently Nevada 330878-91-00 is a 3300 XL 50 mm front sensor designed for high-accuracy, non-contact measurement of vibration and shaft displacement in large rotating machinery. It is part of the Bently Nevada 3300 XL proximity measurement system, widely used in industrial machinery protection and condition monitoring applications.
This sensor is engineered for heavy-duty industrial environments where long-distance signal transmission and stable measurement performance are required for critical rotating assets such as turbines, compressors, and large pump systems.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Bently Nevada |
| Model | 330878-91-00 |
| Product Series | 3300 XL |
| Sensor Type | 50 mm Front Sensor |
| Measurement Type | Shaft vibration and displacement |
| Total Cable Length | 9.0 meters |
| Shipping Weight | 3 kg |
| Sensing Technology | Eddy current proximity system |
| Output Signal | Conditioned displacement/vibration output |
| Installation Type | Industrial mounting / rack system |
| Operating Environment | Heavy-duty industrial applications |
| System Compatibility | Bently Nevada 3300 XL system |
What This Product Is
The 330878-91-00 front sensor is a key component in a non-contact proximity measurement system used for monitoring the condition of large rotating machinery. It operates with a proximity probe, extension cable, and monitoring module to measure shaft movement without physical contact.
It is designed to provide accurate and stable measurement signals that support real-time monitoring and machinery protection functions.
Function and Working Principle
This sensor operates using eddy current proximity measurement technology. A high-frequency electromagnetic field is generated at the probe tip. When a conductive shaft enters this field, eddy currents are induced on the shaft surface.
Changes in the gap between the probe and the shaft alter the electromagnetic response, which is converted into an electrical signal proportional to mechanical movement.
It enables measurement of:
- Shaft vibration
- Radial displacement
- Axial position
- Dynamic shaft behavior
The non-contact design ensures high accuracy, long service life, and resistance to mechanical wear.
Role in Industrial Systems
The 330878-91-00 plays a key role in machinery protection systems by acting as the signal conditioning interface within the 3300 XL architecture.
Its primary functions include:
- Converting probe signals into usable monitoring outputs
- Supporting continuous vibration monitoring
- Enabling early detection of mechanical faults
- Feeding data into alarm and shutdown systems
- Supporting predictive maintenance strategies
Industrial Applications
This sensor is widely used in industries that rely on large rotating machinery and continuous operation:
- Power generation plants
- Oil and gas production facilities
- Petrochemical and refining plants
- Heavy industrial compressor systems
- Large pumping and hydraulic systems
- Marine propulsion and turbine systems
It is especially suitable for high-value assets requiring long-term reliability.
Compatible Components
The 330878-91-00 is typically used with:
- 3300 XL 50 mm proximity probes
- Matched 9.0 m extension cables
- Bently Nevada 3300 XL monitoring modules
- Machinery protection and diagnostic systems
- Signal processing and acquisition units
- Industrial mounting accessories
A fully matched system is required for accurate and stable performance.
Recommended Alternative Models
| Model | Sensor Size | Application |
|---|---|---|
| 330878-91-00 | 50 mm | Standard 9.0 m configuration |
| 330878-90-00 | 50 mm | Alternative 9.0 m variant |
| 330878-90-05 | 50 mm | Flexible installation version |
| 330850-90-05 | 25 mm | Medium machinery applications |
| 330850-90-CN | 25 mm | Regional 25 mm variant |
Key Advantages
- High-precision non-contact measurement
- Stable operation in harsh industrial environments
- Designed for large rotating machinery systems
- Fully compatible with 3300 XL architecture
- Supports continuous monitoring and protection
- Long-distance cable configuration (9.0 m)
Technical FAQs
What is the main function of this sensor?
It measures shaft vibration and displacement using eddy current non-contact technology.
Is it part of a full monitoring system?
Yes, it is used with probes, cables, and monitoring modules in the 3300 XL system.
What equipment is it used on?
It is commonly used on turbines, compressors, pumps, and other large rotating machinery.
Is it suitable for continuous operation?
Yes, it is designed for long-term industrial monitoring applications.
Conclusion
The Bently Nevada 330878-91-00 3300 XL 50 mm Front Sensor is a robust industrial monitoring component designed for accurate non-contact measurement of vibration and shaft displacement in large rotating machinery. Its integration with the 3300 XL system ensures reliable machinery protection, predictive maintenance capability, and stable performance in demanding industrial environments.