Product Overview
The Bently Nevada 330876‑02‑10‑01‑00 3300 XL 50 mm Eddy-Current Probe is a high-performance non-contact displacement sensor used for machinery vibration and shaft position monitoring. Part of the 3300 XL family, this probe delivers precise, reliable measurements of radial movement on large rotating equipment, offering extended measurement range and high-temperature performance.
Its eddy-current sensing design provides accurate, repeatable measurements while withstanding harsh industrial environments, making it ideal for critical condition monitoring applications.
Technical Specifications
| Parameter | Specification |
|---|
| Product Type | Eddy-Current Proximity Probe |
| Model Number | 330876‑02‑10‑01‑00 |
| Series | 3300 XL 50 mm |
| Measurement Type | Non-contact displacement/vibration |
| Linear Range | Up to ~27.9 mm (1100 mils) |
| Sensitivity (Scale Factor) | ~394 mV/mm (10 mV/mil) |
| Operating Temperature | –35 °C to +120 °C (continuous) |
| Intermittent Temp | Up to ~250 °C |
| Cable | High-temperature FluidLoc coaxial |
| Cable Length | ~1.0 m (varies by suffix) |
| Connector Type | ClickLoc industrial connector |
| Thread / Mount | Metric / imperial options available |
| Target Size Requirement | ≥ ~102 mm diameter (recommended) |
| Housing | Rugged stainless steel |
| Protection | Moisture-sealed front and rear |
Industrial Applications
The 3300 XL 50 mm probe is designed for critical machinery measurement, particularly where extended range and environmental robustness are required:
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Vibration and displacement monitoring on steam turbines
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Shaft position tracking in gas turbines, compressors, and generators
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Early fault detection for bearings, imbalance, looseness, misalignment
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Integration into predictive maintenance and condition monitoring systems
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Real-time machinery health analytics in power, petrochemical, and utility sectors
Its long linear range is well-suited for large equipment where rotor growth and differential expansion must be measured over substantial distances.
Key Advantages
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Extended sensing range: Up to ~27.9 mm measurement capability
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High-precision output: Voltage proportional to displacement with low non-linearity
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High-temperature capability: Continuous operation at elevated temperatures, intermittent spikes tolerated
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Rugged construction: Sealed stainless steel body and high-temperature cable resist contamination and moisture
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Seamless integration: Compatible with 3300 XL monitoring systems
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Easy installation: ClickLoc connectors and threaded probes allow secure, repeatable mounting
This combination of features makes it a reliable solution for mission-critical industrial equipment monitoring.
Technical FAQs
1. What does this probe measure?
It measures radial displacement and vibration without contact using eddy-current sensing.
2. What is the effective measurement range?
Up to ~27.9 mm (1100 mils), suitable for large machinery.
3. What environments can it operate in?
Continuous high temperatures up to ~120 °C with intermittent tolerance to ~250 °C.
4. How is it mounted?
Metric or imperial threaded mount options are available based on probe suffix.
5. What cable type does it use?
High-temperature FluidLoc coaxial cable for stable signal transmission.
6. What connector type is standard?
Industrial ClickLoc connector for rugged and secure connection.
7. What target size is recommended?
A flat target with diameter ≥ ~102 mm.
8. Is it suitable for heavy vibration environments?
Yes — designed for turbine, compressor, and generator shaft monitoring.
9. Can it be used with legacy equipment?
Yes — compatible with existing 3300/7200 systems in many cases.
10. What system does it integrate with?
Best used with Bently Nevada 3300 XL proximitor and condition monitoring systems.
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