High-Precision Eddy Current Sensing for Critical Machinery Protection
The Bently Nevada 330101-08-12-10-02-05 3300 XL 8 mm Proximity Probe is a non-contact eddy-current sensor designed for continuous measurement of shaft vibration, displacement, and position in rotating industrial machinery. As part of the 3300 XL transducer system, it delivers stable electrical performance, strong environmental resistance, and long-term reliability for predictive maintenance applications in mission-critical assets.
This configuration is identified by an 8-inch class probe geometry (08), 1.2-inch case length (12), 1.0-meter system cable (10), ClickLoc connector (02), and standard approval option (05), making it suitable for installations requiring extended reach and deeper mounting depth in turbines, compressors, and heavy rotating equipment.
Built with stainless steel housing and a PPS sensing tip, the probe ensures durability under vibration, temperature cycling, and harsh industrial environments while maintaining measurement accuracy and system interchangeability.
Technical Specifications Overview
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330101-08-12-10-02-05 |
| Product Series | 3300 XL |
| Product Type | 8 mm Proximity Probe |
| Measurement Principle | Eddy Current (Non-Contact) |
| Probe Diameter | 8 mm |
| Thread Type | 3/8-24 UNF |
| Case Length | ~1.2 in (30.5 mm) |
| System Cable Length | 1.0 m (3.3 ft) |
| Connector Type | Miniature coaxial ClickLoc |
| Housing Material | AISI 303/304 stainless steel |
| Probe Tip Material | PPS (Polyphenylene Sulfide) |
| Linear Measurement Range | 2.0 mm (80 mils) |
| Sensitivity | 7.87 V/mm (200 mV/mil) ±5% |
| Operating Temperature | -52°C to +177°C |
| Frequency Response | Up to 10 kHz |
| System Compatibility | 3300 XL Proximitor systems |
| Weight | Approx. 0.15–0.35 kg |
Industrial Applications
The 330101-08-12-10-02-05 probe is widely used in industries where continuous machine reliability is essential for safe and efficient operations.
Typical applications include:
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Steam turbine vibration monitoring
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Gas turbine condition protection systems
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Centrifugal compressor diagnostics
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Industrial pump performance monitoring
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Electric motor shaft displacement measurement
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Generator protection systems
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Oil and gas processing facilities
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Petrochemical refining plants
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Power generation stations
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Heavy industrial rotating machinery systems
By continuously tracking shaft motion, it supports early detection of imbalance, misalignment, looseness, and bearing wear—helping operators reduce downtime and improve asset lifecycle management.
Key Advantages
Stable Non-Contact Measurement
Eddy-current sensing ensures consistent and repeatable vibration and displacement readings.
Extended Installation Capability
The 8-inch class configuration supports deeper or specialized mounting requirements in large machinery systems.
Rugged Industrial Construction
Stainless steel housing and PPS tip provide resistance to vibration, corrosion, and thermal stress.
Predictive Maintenance Enablement
Supports early fault detection and condition-based monitoring strategies.
Full System Interoperability
Compatible with all 3300 XL Proximitor sensors and extension cables for seamless integration.
Long-Term Operational Reliability
Designed for continuous 24/7 monitoring in harsh industrial environments.
Technical FAQs
Q1: What is the main function of this probe?
It measures shaft vibration, displacement, and position without physical contact.
Q2: What technology does it use?
It uses eddy-current non-contact sensing technology.
Q3: What does the “08-12” configuration represent?
It indicates an 8-inch class probe geometry and a 1.2-inch case length.
Q4: What is the system cable length?
It uses a 1.0-meter cable assembly.
Q5: Which industries use this probe?
Power generation, oil & gas, petrochemical, and heavy industry sectors.
Q6: Does it touch the rotating shaft?
No, it operates using non-contact measurement.
Q7: What materials are used?
Stainless steel housing with PPS sensing tip.
Q8: Is it suitable for harsh environments?
Yes, it is designed for high vibration and temperature industrial conditions.
Q9: Is it compatible with other 3300 XL components?
Yes, it is fully interchangeable within the 3300 XL system.
Q10: What is the main benefit for maintenance teams?
It enables early detection of mechanical degradation, reducing downtime and maintenance costs.
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