Introduction
The Bently Nevada 330101‑33‑66‑10‑02‑05 3300 XL 8 mm Proximity Probe is a precision eddy‑current displacement sensor engineered for robust condition monitoring of rotating machinery. As part of the trusted 3300 XL Proximity Transducer System, this probe delivers accurate shaft vibration and position measurements used in machine protection, predictive maintenance, and advanced diagnostics.
Designed for industrial environments, the probe features a rugged stainless‑steel body, high‑temperature PPS sensing tip, and a secure coaxial ClickLoc connector. Its extended case length and engineered cable configuration make it suitable for installations requiring additional spacing or improved mounting flexibility — essential in turbine, compressor, generator, pump, and motor vibration systems.
Technical Specifications
| Specification | Details |
|---|
| Model Number | 330101‑33‑66‑10‑02‑05 |
| Product Series | 3300 XL Proximity Sensors |
| Module Type | Eddy‑Current Proximity Probe |
| Probe Diameter | 8 mm |
| Thread Size | 3/8‑24 UNF |
| Unthreaded Length | 0.0 in |
| Case Length | 6.6 in |
| Cable Length | 1.0 m |
| Connector Type | Miniature coaxial ClickLoc |
| Probe Tip Material | Polyphenylene Sulfide (PPS) |
| Probe Body Material | Stainless Steel |
| Measurement Range | Standard 2 mm gap |
| Linearity | ±1 % of full scale (typical) |
| Operating Temperature | −40 °C to +180 °C |
| Dimensions | Approx. Ø 8 mm × 6.6 in case |
| Weight | ~0.35 kg |
Applications
The 330101‑33‑66‑10‑02‑05 proximity probe is widely used for monitoring the health of critical rotating equipment:
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Steam and gas turbine vibration monitoring
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Compressor shaft displacement measurement
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Pump and motor vibration analysis
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Generator rotor position sensing
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Oil & gas process machinery protection
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Predictive maintenance and condition monitoring programs
Continuous displacement feedback helps detect problems such as imbalance, misalignment, looseness, or bearing wear before they escalate into failures.
Advantages
High‑Precision Measurement
Accurate eddy‑current displacement sensing with tight linearity yields dependable vibration and shaft position data for condition monitoring.
Built for Industrial Use
Durable stainless‑steel housing and PPS probe tip resist mechanical stress, heat, and vibration encountered in industrial environments.
Secure ClickLoc Connector
The miniature coaxial ClickLoc connector provides a robust, reliable connection that helps prevent accidental signal loss.
Extended Case Design
The 6.6 in case length allows flexible mounting options and improved probe placement in challenging installations.
Wide Temperature Range
Able to operate under significant temperature variation typical of industrial control cabinets and rotating equipment enclosures.
Technical FAQs
1. What does this probe measure?
It measures shaft vibration and displacement using non‑contact eddy‑current sensing.
2. What probe diameter is used?
This model has an 8 mm diameter sensing tip.
3. What is the cable length?
The probe includes a 1.0 m cable.
4. What is the case length?
The case length is approximately 6.6 in.
5. What temperature range does the probe support?
It operates from roughly −40 °C to +180 °C.
6. What industries use this probe?
Common in power generation, oil & gas, petrochemical, and heavy industrial machinery monitoring.
7. Does the probe operate independently?
No; it must be used as part of a 3300 XL transducer system with a proximitor sensor and extension cable.
8. What mounting thread does it use?
Standard 3/8‑24 UNF thread.
9. What is the measurement range?
It is designed around the standard 2 mm air‑gap range used in 3300 XL systems.
10. Why are proximity probes important in maintenance?
They provide real‑time displacement and vibration feedback that enables early detection of mechanical faults and helps prevent unplanned downtime.
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