Introduction
The Bently Nevada 330106-05-30-90-02-00 is a 3300 XL 8 mm Reverse Mount Probe designed for non-contact measurement of shaft vibration and position in critical rotating machinery. Based on eddy-current proximity sensing technology, the probe provides measurement of the gap between the sensing tip and a conductive rotating target without requiring physical contact.
The defining feature of this configuration is its 9.0 meter total length, making it one of the extended-length options within the 3300 XL 8 mm reverse-mount probe family. This long-reach configuration is particularly useful for large machinery installations where the monitored shaft is located a significant distance from the associated Proximitor or monitoring equipment.
The probe uses an M10 × 1 mounting thread and a Miniature ClickLoc™ coaxial connector. Its reverse-mount arrangement gives engineers additional flexibility when working around bearing housings, machine casings, and other areas where conventional probe access is restricted.
For power generation, oil and gas, petrochemical, and heavy industrial applications, the 330106-05-30-90-02-00 offers a practical combination of extended installation reach, compact 8 mm sensing, and compatibility with the established 3300 XL proximity monitoring platform.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model Number | 330106-05-30-90-02-00 |
| Product Series | 3300 XL |
| Product Type | 8 mm Reverse Mount Probe |
| Sensing Technology | Eddy-Current Proximity Sensing |
| Probe Diameter | 8 mm |
| Mounting Thread | M10 × 1 |
| Total Length | 9.0 m (29.5 ft) |
| Connector | Miniature ClickLoc™ coaxial connector |
| Agency Approval Option | 00 — Not Required |
| Mounting Configuration | Reverse Mount |
| Probe Tip Material | Polyphenylene Sulfide (PPS) |
| Probe Case Material | AISI 303 or 304 Stainless Steel |
| Measurement Type | Static shaft position and dynamic vibration |
| System Family | 3300 XL Proximity Transducer System |
| Recommended Gap | Approximately 1.27 mm (50 mils) for standard calibration |
| Pressure Sealing | Viton® O-ring assembly |
| Long-Length System Requirement | 9 m configuration should be matched with the appropriate Proximitor sensor |
Dimensions & Weight
| Physical Parameter | Specification |
| Probe Diameter | 8 mm |
| Total Configured Length | 9.0 m |
| Equivalent Length | 29.5 ft |
| Mounting Thread | M10 × 1 |
| Connector | Miniature ClickLoc coaxial |
| Probe Case Material | AISI 303/304 Stainless Steel |
| Probe Tip Material | PPS |
| Weight | Configuration/packaging dependent |
Applications
Large Turbine Installations
The extended length makes this probe well suited to large steam and gas turbine installations where the sensing point may be located far from the associated monitoring equipment. Shaft vibration and position measurements can contribute to turbine protection and condition-monitoring strategies.
Generator Monitoring
Large generators often require multiple monitoring points distributed around the machine. A 9.0 m probe configuration can provide useful installation reach where shorter assemblies are impractical.
Compressor Trains
Critical compressor trains can benefit from continuous proximity measurements of shaft movement. The reverse-mount design provides an additional installation option around bearing housings and machine structures.
Oil and Gas Machinery
Large rotating assets used in upstream, midstream, and downstream applications can require sensors positioned at locations that are not easily accessible with conventional mounting arrangements. The extended-length 330106 configuration can help accommodate these layouts.
Petrochemical Equipment
Turbines, compressors, pumps, and other rotating process equipment can use proximity probes as part of a broader machinery protection system. The 9.0 m configuration is especially useful where long physical routing is required.
Heavy Industrial Machinery
Large industrial machines frequently have complex physical layouts and considerable distances between sensing locations and monitoring cabinets. This long-length probe provides additional flexibility for these installations.
Remote or Difficult-Access Monitoring Points
The reverse-mount design combined with a 9.0 m length is particularly attractive when the probe must be installed in a confined or difficult-access area while the connected monitoring hardware is positioned farther away.
Advantages
9 Meter Extended Reach
The 9.0 m total-length configuration provides significantly more installation flexibility than shorter 330106 variants. It is designed for applications where a standard 0.5 m, 1.0 m, 1.5 m, 2.0 m, or 5.0 m configuration may not provide sufficient reach.
Reverse Mounting Flexibility
The reverse mounting arrangement allows the probe to be installed from the rear of the mounting location. This can simplify sensor placement where machine housings or surrounding components restrict conventional access.
Non-Contact Measurement
Eddy-current sensing enables shaft movement to be monitored without mechanical contact. This makes the technology particularly valuable for high-speed rotating machinery where contact-based sensing would be unsuitable.
Compact 8 mm Probe Format
Despite its extended overall length, the sensing element maintains the 8 mm format used throughout the 3300 XL 8 mm proximity probe family, helping accommodate installations where available mounting space is limited.
Durable Materials
The probe tip uses polyphenylene sulfide (PPS), while the probe housing is constructed from AISI 303 or 304 stainless steel. This combination provides a robust mechanical package for industrial service.
Secure Probe Construction
3300 XL probe designs incorporate TipLoc™ molding between the probe tip and body for a stronger mechanical bond. The CableLoc™ design also helps secure the probe cable connection.
Flexible Machinery Monitoring
The probe can provide both static shaft-position and dynamic vibration information, allowing one sensing technology to support multiple machinery-monitoring requirements.
Suitable for Large Equipment
The extended 9.0 m configuration is particularly advantageous for large turbines, generators, compressors, and other machinery where sensing points can be physically distant from monitoring cabinets.
Established 3300 XL Platform
For facilities already using Bently Nevada 3300 XL proximity monitoring equipment, this model provides a long-length option within the same established probe family, helping maintain consistency across existing machinery monitoring installations.
Technical FAQs
1. What is the Bently Nevada 330106-05-30-90-02-00?
It is a 3300 XL 8 mm Reverse Mount Probe designed for non-contact measurement of shaft vibration and position in rotating machinery.
2. What does “90” mean in the model number?
The 90 identifies the 9.0 meter (29.5 ft) total-length option for the 330106 8 mm reverse-mount probe.
3. Is this a 5 meter probe?
No. The 90 option corresponds to 9.0 meters. The 5.0 meter configuration uses the 50 length option.
4. What connector does this model use?
The 02 configuration specifies a Miniature ClickLoc™ coaxial connector with standard cable.
5. What does the final “00” indicate?
The final 00 represents the agency approval option: not required.
6. What is the probe diameter?
The probe uses an 8 mm sensing diameter.
7. What mounting thread is used?
The 330106 reverse-mount configuration uses an M10 × 1 thread.
8. What materials are used in the probe?
The probe tip is constructed from polyphenylene sulfide (PPS), while the probe case uses AISI 303 or 304 stainless steel.
9. Why would an application require a 9 meter probe?
A 9 meter configuration can be useful when the sensing location is far from the associated monitoring equipment or when machine geometry requires a longer routing path. It is particularly relevant to large turbines, generators, compressor trains, and other extensive rotating machinery installations.
10. Can the 330106-05-30-90-02-00 be connected to any 3300 XL Proximitor?
No. The complete probe and Proximitor configuration should be matched carefully. The 3300 XL documentation specifically identifies long-length configurations with corresponding Proximitor requirements, so the installed probe length, Proximitor sensor, cable arrangement, and system architecture should be verified before commissioning.
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