Introduction
The Bently Nevada 330703-006-100-10-01-00 3300 XL 11 mm Proximity Probe is a precision eddy-current displacement sensor engineered for continuous monitoring of critical rotating machinery. As part of the 3300 XL 11 mm Proximity Transducer System, it provides reliable non-contact measurement of shaft vibration, radial and axial position, and other dynamic displacement conditions.
This particular configuration combines a metric M14 × 1.5 mounting thread, 6 mm unthreaded length, 100 mm overall case length, and a 1.0 m integral cable. The 01 cable option adds a miniature coaxial ClickLoc connector with connector protector and standard cable, while the 00 suffix indicates that no additional agency approval option is selected.
The 11 mm sensing platform is designed for applications where the measurement range of a conventional 8 mm proximity system may be insufficient. With its extended sensing capability, robust stainless-steel construction, and factory-configured cable assembly, the 330703-006-100-10-01-00 is a strong choice for demanding machinery-monitoring installations.
Technical Specifications
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Product Family | 3300 XL 11 mm |
| Product Type | Proximity Probe |
| Part Number | 330703-006-100-10-01-00 |
| Probe Model | 330703 |
| Mounting Style | Standard Mount |
| Thread | M14 × 1.5 |
| Construction | Unarmored |
| Unthreaded Length | 6 mm |
| Overall Case Length | 100 mm |
| Integral Cable Length | 1.0 m / 3.3 ft |
| Connector Option | 01 |
| Connector | Miniature coaxial ClickLoc with connector protector |
| Cable Type | Standard cable |
| Approval Option | 00 — Not required |
| Sensing Technology | Eddy-current |
| Nominal Scale Factor | 100 mV/mil / 3.94 V/mm |
| Linear Measurement Range | Approx. 4 mm / 160 mil |
| Nominal Probe Gap | Approx. 2.5 mm / 100 mil |
| Typical Frequency Response | 0–8 kHz |
| Probe Tip Material | PPS |
| Probe Case Material | AISI 304 stainless steel |
| Cable Construction | 75 Ω triaxial, FEP insulated |
| Operating / Storage Temperature, Probe | Approx. -52°C to +177°C |
| Mounting Lock Nut | 22 mm |
| Wrench Flats | 12 mm |
Applications
Shaft Vibration Measurement
The 330703-006-100-10-01-00 provides non-contact shaft displacement measurement for continuous machinery vibration monitoring. It can be integrated into protection and condition-monitoring systems on high-value rotating equipment.
Axial Position Monitoring
The extended-range 11 mm design is particularly useful for axial or thrust-position measurements, where accurate detection of shaft movement is essential to machinery protection.
Differential Expansion
Steam turbines can use 3300 XL 11 mm transducers for ramp differential-expansion measurements, especially where a longer linear sensing range is required.
Reciprocating Compressor Monitoring
The system can be used for rod-position and rod-drop measurements on reciprocating compressors, providing important information about mechanical movement and abnormal operating conditions.
Keyphasor and Speed Applications
The probe can also serve in phase-reference, Keyphasor, tachometer, and zero-speed applications, providing a reliable non-contact signal from a rotating target.
Typical Machinery
The probe is suitable for monitoring applications involving:
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Steam turbines
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Gas turbines
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Turbo-compressors
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Centrifugal compressors
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Reciprocating compressors
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Generators
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Large motors
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Pumps
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Gearboxes
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Critical rotating shafts
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Fluid-film bearing machines
Advantages
Extended Linear Range
The 3300 XL 11 mm system provides approximately 4 mm (160 mil) of linear measurement range, giving it greater displacement capability than the standard 8 mm platform.
100 mm Long-Body Configuration
The 100 mm case length provides additional physical reach for installations where shorter probe bodies are unsuitable. This makes the model particularly valuable when mounting geometry requires a longer standard probe.
Metric M14 × 1.5 Thread
The M14 × 1.5 mounting thread is well suited to metric machinery and offers a straightforward replacement option for compatible 330703 installations.
6 mm Unthreaded Length
The 6 mm unthreaded section provides a defined mechanical configuration for applications where the probe needs a controlled threaded-to-unthreaded transition.
Protected ClickLoc Connector
The 01 configuration incorporates a miniature coaxial ClickLoc connector with a connector protector. This helps provide a more secure and protected connection between the probe and the associated extension cable.
Standard Cable Construction
The standard cable uses a 75 Ω triaxial construction with FEP insulation, providing a durable electrical connection for industrial machinery-monitoring systems.
Rugged Probe Construction
An AISI 304 stainless-steel probe body and PPS tip provide a robust mechanical package for permanent installation around rotating machinery.
Non-Contact Technology
Eddy-current measurement operates without physical contact between the probe tip and shaft. This eliminates probe-tip contact wear and makes the technology well suited to high-speed rotating equipment.
Practical Replacement Solution
For plants already using the 3300 XL 11 mm platform, this model offers a well-defined combination of M14 × 1.5 mounting, 100 mm body length, 6 mm unthreaded section, 1 m cable, and protected ClickLoc connection.
Technical FAQs
1. What is the Bently Nevada 330703-006-100-10-01-00?
It is a 3300 XL 11 mm Proximity Probe featuring an M14 × 1.5 thread, 6 mm unthreaded length, 100 mm case length, 1.0 m integral cable, protected ClickLoc connector, and standard cable.
2. What does 330703 identify?
The 330703 base model identifies an unarmored 3300 XL 11 mm metric proximity probe with an M14 × 1.5 thread.
3. What does the “006” section mean?
The 006 section specifies a 6 mm unthreaded length.
4. What does “100” indicate?
The 100 section identifies the 100 mm overall case length of the probe.
5. How long is the integral cable?
The 10 option specifies a 1.0 m integral cable.
6. What does the “01” cable option provide?
The 01 configuration uses a miniature coaxial ClickLoc connector with connector protector and standard cable.
7. What does the final “00” mean?
The 00 suffix indicates that an additional agency approval option is not required for the specified configuration.
8. What is the nominal probe gap?
The typical reference gap for the 3300 XL 11 mm system is approximately 2.5 mm (100 mil).
9. What is the linear measurement range?
The 3300 XL 11 mm system provides approximately 4 mm (160 mil) of linear measurement range, with a nominal scale factor of 100 mV/mil (3.94 V/mm).
10. Can this probe replace another 330703 probe?
It may be suitable when the replacement installation requires the same M14 × 1.5 mounting, 6 mm unthreaded length, 100 mm case length, 1 m cable, connector configuration, and approval arrangement. The complete part number should always be compared before substitution because differences in length, cable, connector, or approvals can affect installation compatibility.
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