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Product Introduction
The Bently Nevada 330876-03-90-00-05 is a 3300 XL series 50 mm proximity probe designed for non-contact displacement measurement in demanding rotating machinery applications. Compared to standard 8 mm and 11 mm probes, the 50 mm probe is optimized for large shaft diameters, long measurement gaps, and harsh mechanical conditions.
As a core component of the 3300 XL proximity system, this probe delivers stable and repeatable eddy-current signals when used with compatible extension cables and proximitor sensors. Its long total length configuration makes it suitable for remote mounting and complex machinery layouts, commonly found in turbines, compressors, and large industrial motors.
Product Specifications
| Parameter | Description |
|---|---|
| Product Series | Bently Nevada 3300 XL |
| Model Number | 330876-03-90-00-05 |
| Product Type | 50 mm Proximity Probe |
| Measurement Principle | Eddy current, non-contact |
| Probe Diameter | 50 mm |
| Compatible System | 3300 XL Proximity System |
| Compatible Proximitor | 3300 XL 50 mm Proximitor Sensors |
| Measurement Function | Shaft displacement and position |
| Target Material | Conductive shaft materials |
| System Calibration | Factory calibrated for 3300 XL 50 mm systems |
| Electrical Connection | Coaxial probe connection |
| Total Length | 9.0 meters |
| Environmental Protection | Industrial-grade insulation and shielding |
| Operating Temperature | Suitable for continuous industrial operation |
| Dimensions | Standard 3300 XL 50 mm probe geometry |
| Shipping Weight | 3 kg |
Applications
• Large shaft displacement monitoring
Designed for monitoring displacement on large-diameter shafts where standard proximity probes are not suitable.
• Turbine and generator applications
Widely used on steam, gas, and hydro turbines to monitor shaft position and dynamic movement.
• Heavy-duty compressors and motors
Supports accurate shaft monitoring in high-load, high-inertia rotating equipment.
• Critical machinery protection systems
Forms an essential sensing element in machinery protection architectures such as Bently Nevada 3500 systems.
Advantages
• Extended measurement capability
The 50 mm probe design allows accurate displacement measurement over larger gaps and shaft diameters.
• Stable and repeatable signal output
Provides consistent eddy-current response when paired with compatible 3300 XL proximitor sensors.
• Optimized for harsh industrial conditions
Engineered to maintain signal integrity under vibration, electrical noise, and mechanical stress.
• Seamless system integration
Fully compatible with 3300 XL extension cables, proximitor sensors, and monitoring modules.
• Supports advanced machinery diagnostics
Enables reliable vibration, position, and displacement data for condition monitoring and protection systems.
