Introduction
The Bently Nevada 330704-00-050-10-02-05 is a 3300 XL 11 mm Proximity Probe intended for continuous, non-contact measurement of shaft vibration, shaft position, and displacement on industrial rotating equipment.
Its compact 50 mm case configuration makes this model particularly useful where installation depth is limited. The probe uses an 11 mm sensing configuration, a 1.0 m integral cable, and a miniature coaxial ClickLoc connector. The 05 suffix identifies the multiple-approval configuration.
As part of the 3300 XL 11 mm family, this probe uses eddy-current sensing to detect shaft movement without physical contact. That makes it a practical choice for machinery protection and condition-monitoring systems where stable, continuous measurement is essential. Available product information identifies the probe as a 3300 XL 11 mm model with a 1 m cable and approximately 0.17 kg product weight.
For replacement applications, the complete part number should be checked carefully. The 50 mm case length, cable length, connector configuration, and approval option are important when matching an existing installation.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Bently Nevada |
| Part Number | 330704-00-050-10-02-05 |
| Product Family | 3300 XL |
| Product Type | 11 mm Proximity Probe |
| Probe Model | 330704 |
| Probe Size | 11 mm |
| Mounting Configuration | Metric |
| Mounting Thread | M14 x 1.5 |
| Construction | Armored |
| Unthreaded Length | 0 mm |
| Overall Case Length | 50 mm |
| Integral Cable Length | 1.0 m (3.3 ft) |
| Connector | Miniature coaxial ClickLoc |
| Connector Configuration | Standard ClickLoc configuration |
| Cable Type | Standard cable |
| Measurement Principle | Non-contact eddy-current sensing |
| Nominal Linear Range | Approximately 4 mm (160 mils) |
| Nominal Scale Factor | Approximately 3.94 V/mm (100 mV/mil) |
| Recommended Nominal Gap | Approximately 2.5 mm (100 mils) |
| Typical Measurement | Shaft vibration and position |
| Typical Equipment | Turbines, compressors, pumps, motors, generators |
| Approval Configuration | Multiple Approvals |
| Product Weight | Approximately 0.17 kg |
| Shipping Weight | Approximately 2 kg, packaging dependent |
Applications
Steam Turbine Monitoring
The 3300 XL 11 mm platform can be integrated into turbine monitoring arrangements for shaft vibration, position, and displacement measurements. Its larger sensing configuration is useful where extended measurement capability is required.
Gas Turbine Condition Monitoring
For compatible gas-turbine installations, the probe can provide continuous shaft-motion information to support machinery protection and condition-monitoring strategies.
Compressor Protection
The probe can monitor shaft movement on suitable compressors and provide condition data that helps identify abnormal vibration or displacement.
Pump Monitoring
Industrial pumps can benefit from continuous proximity measurement where shaft vibration and position are important indicators of machine health.
Motor and Generator Monitoring
The non-contact design allows shaft movement to be monitored without introducing physical contact with the rotating component, making the technology well suited to large motors and generators.
Machinery Protection Systems
The probe can form part of a complete proximity transducer arrangement, supplying displacement information to compatible monitoring electronics for alarms, trends, and protective actions.
Space-Constrained Installations
The 50 mm case length is one of the strongest practical characteristics of this model. It offers the 3300 XL 11 mm sensing platform while maintaining a relatively short probe body.
Industrial Condition Monitoring
The probe can be used as part of predictive-maintenance programs, helping maintenance personnel track changing vibration and shaft-position behavior before a developing mechanical problem becomes a major failure.
Advantages
Compact 50 mm Probe Body
The 50 mm case length provides a valuable solution for installations where a longer probe cannot be accommodated. It is especially useful when replacing an existing short-body 3300 XL probe.
11 mm Sensing Platform
The 11 mm configuration provides a nominal 4 mm linear measurement range, giving users additional displacement capability compared with smaller proximity probe families.
Non-Contact Measurement
Eddy-current sensing measures shaft movement without physical contact. This eliminates direct sensor-to-shaft wear and supports continuous operation.
1 m Integral Cable
The 1.0 m cable keeps the assembly compact and is convenient where the Proximitor Sensor or associated electronics are positioned near the measurement point.
ClickLoc Connection
The miniature coaxial ClickLoc connection provides a secure and practical interface for compatible 3300 XL system components.
Armored Construction
The armored configuration adds mechanical protection to the cable assembly and is well suited to industrial environments with vibration and demanding cable-routing conditions.
Multiple-Approval Configuration
The 05 option provides the multiple-approval configuration, giving this model additional flexibility for projects where specified approval requirements apply.
Replacement-Oriented Part Numbering
The detailed ordering code makes it easier to match the replacement probe to an existing installation. This is particularly important for the 50 mm case length and 02 connector configuration.
Proven Machinery-Monitoring Concept
When correctly paired with the appropriate Proximitor Sensor, extension cable, and monitoring equipment, the probe forms part of a complete system capable of delivering continuous machinery-condition information.
Technical FAQs
1. What is the Bently Nevada 330704-00-050-10-02-05?
It is a 3300 XL 11 mm proximity probe configured with a 50 mm case, 1 m integral cable, ClickLoc connector, armored construction, and multiple approvals.
2. What is the probe size?
This model belongs to the 3300 XL 11 mm proximity probe family.
3. What mounting configuration does it use?
The 330704 metric configuration uses an M14 x 1.5 mounting thread.
4. What does the 050 option mean?
The 050 option identifies the 50 mm overall case length.
5. How long is the cable?
The 10 option specifies a nominal 1.0 m (3.3 ft) integral cable. Available product listings also identify the total cable length as 1 meter.
6. What does the 02 option specify?
The 02 configuration identifies the miniature coaxial ClickLoc connector with standard cable.
7. What does the final 05 indicate?
The 05 designation identifies the multiple-approval configuration.
8. What is the nominal measurement range?
The 3300 XL 11 mm platform provides a nominal 4 mm (160 mil) linear range, with an approximate 3.94 V/mm (100 mV/mil) scale factor.
9. What is the approximate weight?
The listed product weight is approximately 0.17 kg. Shipping weight can be considerably higher because of packaging; one supplier lists approximately 2 kg shipping weight.
10. Can this probe replace an 80 mm or 100 mm 330704 probe?
Not automatically. Although the probe family and mounting arrangement may be similar, the 50 mm case length changes the mechanical installation geometry. The replacement should match the original probe's physical dimensions, cable configuration, connector option, and approval requirements.
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