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- 330710-00-05-50-02-05
- 3300 XL 11mm Proximity Probe
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Bently Nevada 330710-00-05-50-02-05 Proximity Probe — Product Description, Technical Specifications, Applications, and Related Models
1. Product Overview
The Bently Nevada 330710-00-05-50-02-05 is a proximity probe belonging to the 3300 XL 11 mm proximity measurement product family. It is designed for non-contact measurement of shaft displacement, vibration, and relative position in rotating machinery. The probe works with a compatible proximity sensor and monitoring system to convert changes in the distance between the probe tip and a conductive target into an electrical signal.
This type of measurement is widely used in industrial equipment where continuous monitoring of shaft movement and mechanical condition is important. Typical applications include steam turbines, gas turbines, compressors, pumps, generators, and other rotating machines operating under demanding conditions.
The probe is intended for installation as part of a complete measurement chain. For accurate operation, the probe, extension cable, compatible Proximitor Sensor, and monitoring instrument must be selected according to the required system configuration.
2. Basic Product Information
| Parameter | Description |
|---|---|
| Brand | Bently Nevada |
| Model | 330710-00-05-50-02-05 |
| Product family | 3300 XL |
| Product series | 3300 XL 11 mm Proximity Probe |
| Product type | Non-contact eddy-current proximity probe |
| Measurement method | Eddy-current electromagnetic measurement |
| Primary function | Shaft displacement, vibration, and position measurement |
| Measurement target | Conductive metal surfaces |
| Typical installation | Fixed mounting facing a rotating shaft or other conductive target |
| Measurement system | Compatible proximity probe, extension cable, and Proximitor Sensor |
| Output type | Measurement signal for a compatible proximity monitoring system |
| Typical equipment | Turbines, compressors, pumps, generators, and industrial rotating machinery |
| Intended environment | Industrial machinery monitoring and protection systems |
3. Detailed Technical Parameters
The following table summarizes the main technical characteristics of the model and its product family. Ordering-code details should be checked against the equipment nameplate and the applicable configuration drawing before replacement or installation.
| Parameter | Technical specification |
|---|---|
| Model | 330710-00-05-50-02-05 |
| Brand | Bently Nevada |
| Series | 3300 XL 11 mm |
| Probe type | Eddy-current proximity probe |
| Nominal probe diameter | 11 mm class |
| Measurement principle | Non-contact electromagnetic sensing |
| Nominal linear measurement range | Approximately 4.0 mm with a compatible system |
| Target material | Electrically conductive metal |
| Typical target | Steel machinery shaft |
| Measurement functions | Shaft vibration, relative displacement, and position |
| Probe mounting | Threaded, forward-mount style, depending on the specified configuration |
| Thread specification | Configuration-dependent; confirm the exact mechanical drawing |
| Probe case length | Ordering-code dependent; confirm the complete configuration drawing |
| Unthreaded length | Ordering-code dependent |
| Cable length | The 50 code is commonly associated with a 5.0 m cable option in this product family; verify the exact ordering-code interpretation |
| Connector configuration | The 02 code is associated with a miniature coaxial ClickLoc connector configuration in this family; confirm compatibility before use |
| Approval option | The final 05 suffix identifies an ordering option; the exact approval designation should be confirmed from the product code documentation |
| Probe tip material | PPS-type tip material is used in this product family |
| Housing material | Stainless-steel construction is used in applicable configurations |
| Electrical operating principle | Eddy-current sensing with a compatible driver/sensor |
| Output resistance | System-dependent; approximately 45 Ω is a commonly specified probe characteristic |
| Supply voltage | Supplied through the compatible Proximitor Sensor; commonly specified systems operate from a negative DC supply |
| Operating temperature | Depends on the exact probe and cable configuration; verify the model-specific limits |
| Protection method | Non-contact measurement; the probe itself does not provide a complete machinery protection function |
| Installation requirements | Correct mounting clearance, cable routing, grounding, and system calibration |
| Dimensions | Exact overall dimensions depend on the ordering configuration and mounting geometry |
| Weight (kg) | Exact net weight for this complete model is not independently verified; obtain the dimensional drawing or weigh the supplied unit |
| Packaging dimensions | Must be confirmed from the actual shipment; packaging size is not the same as probe dimensions |
| Replacement requirements | Match the probe model, cable length, connector, mounting dimensions, approvals, and sensor compatibility |
Important configuration note: The model number contains several ordering options. A suffix that appears similar may correspond to a different case length, cable length, connector, or approval selection. Do not use the nominal family specifications alone to establish interchangeability.
For purchasing, maintenance, or replacement work, the most reliable approach is to match the complete model number and verify the mechanical drawing, electrical compatibility, and installation requirements before ordering.
4. Product Introduction
The 330710-00-05-50-02-05 is intended for applications requiring continuous measurement of the relative movement between a probe and a conductive machine component. In a typical installation, the probe is secured to a stationary mounting point, with its sensing tip positioned close to the shaft surface. As the shaft moves, the distance between the shaft and probe changes, producing a corresponding change in the electrical characteristics of the sensing circuit.
The associated sensor converts this change into a usable measurement signal. A monitoring instrument can then display the measured value, record operating trends, and compare the signal with configured alarm or trip limits.
One of the principal characteristics of eddy-current proximity measurement is that it does not require physical contact between the probe and the shaft. This makes it suitable for continuously operating equipment where mechanical contact could cause wear, affect measurement accuracy, or interfere with normal operation.
The 3300 XL 11 mm family is designed for industrial machinery monitoring, where stable measurements and repeatable installation are important. When installed with compatible components and calibrated correctly, the system can support routine condition monitoring as well as machinery protection strategies.
The probe should not be considered a standalone monitoring system. Its performance depends on the complete measurement chain, including the probe, extension cable, Proximitor Sensor, target material, mounting arrangement, and monitoring equipment.
5. Main Applications
5.1 Steam Turbine Monitoring
In steam turbine installations, proximity probes can be used to monitor shaft vibration and relative shaft position. These measurements help maintenance personnel identify changes in machine behavior that may be associated with rotor imbalance, misalignment, bearing problems, or other mechanical conditions.
Continuous measurement is particularly useful for equipment operating for long periods at high rotational speeds. Trend data can help engineers distinguish normal operating changes from developing mechanical problems.
5.2 Gas Turbine Monitoring
Gas turbines operate under demanding thermal and mechanical conditions. Shaft displacement and vibration measurements provide useful information about rotor behavior, bearing performance, and machine stability.
A correctly configured proximity measurement system can provide continuous signals for monitoring and diagnostic equipment, supporting maintenance planning and operational decision-making.
5.3 Compressor Monitoring
Industrial compressors may experience vibration, shaft movement, changes in bearing clearances, and other mechanical variations during operation.
Proximity probes can monitor relative shaft movement and provide signals for machinery monitoring systems. These measurements are useful in process plants, gas compression facilities, and other installations where compressor availability is important.
5.4 Pump and Motor Monitoring
Large pumps and motor-driven equipment may require continuous shaft vibration and displacement monitoring, particularly when they operate continuously or support critical processes.
The probe can form part of a monitoring arrangement used to identify changes in machine condition. It may be installed as part of a broader system that also monitors bearing temperature, casing vibration, speed, and other operating variables.
5.5 Generator Monitoring
Generators and other rotating electrical machines may use proximity measurement to monitor shaft movement and vibration. The collected data can help engineers assess mechanical stability and identify changes that require further inspection.
For generator applications, probe selection must account for the machine’s shaft geometry, mounting location, operating speed, target material, and the requirements of the installed monitoring system.
5.6 Axial Position and Shaft Displacement Measurement
In suitable configurations, proximity probes can measure relative shaft position and axial movement. Such measurements may be used to monitor changes in rotor position, thrust-related movement, and other displacement conditions.
The precise measurement function depends on the probe arrangement, sensor configuration, and monitoring instrument. A single probe should not automatically be assumed to provide every type of displacement measurement.
5.7 Machinery Condition Monitoring
The probe can support condition-monitoring programs by supplying continuous measurement signals. When these signals are recorded over time, maintenance teams can review trends, investigate abnormal changes, and plan inspections based on equipment condition.
This approach can be particularly valuable for machines where unexpected shutdowns result in significant production losses or maintenance costs.
6. Product Advantages
6.1 Non-Contact Measurement
The probe measures the distance to a conductive target without requiring direct physical contact. This reduces measurement-related mechanical wear and allows continuous monitoring while the machine is operating.
6.2 Suitable for Continuous Monitoring
When integrated into a compatible monitoring system, the probe can provide ongoing shaft displacement or vibration measurements. Continuous data helps operators observe changes that might not be apparent during occasional inspections.
6.3 Supports Machinery Diagnostics
Changes in shaft vibration and position can provide useful information about the condition of rotating equipment. When combined with other measurements and appropriate diagnostic methods, the probe can help maintenance personnel investigate potential mechanical problems.
6.4 Integration with Compatible Monitoring Equipment
The 3300 XL 11 mm family is designed for use with compatible proximity measurement components. Correctly matched components allow the probe signal to be processed by monitoring equipment for display, trending, alarm functions, and other supported features.
6.5 Suitable for Industrial Environments
The product family is intended for industrial machinery applications. Its suitability for a specific environment depends on the selected configuration, temperature limits, cable arrangement, installation method, and applicable approvals.
6.6 Repeatable Measurement
Eddy-current measurement systems can provide repeatable results when the probe is installed correctly and the measurement chain is configured and calibrated according to its specifications.
Repeatability is important when comparing present measurements with historical operating data.
6.7 Supports Predictive Maintenance
Historical vibration and displacement trends can help maintenance teams identify changes in machinery behavior. This information may support earlier investigation, better inspection planning, and reduced reliance on time-based maintenance alone.
6.8 Flexible Application Options
The broader product family offers different configuration options. Depending on the exact model, these may include differences in mounting geometry, cable length, connector configuration, and approval requirements.
This makes correct model identification essential when selecting a replacement or designing a new installation.
7. Installation and Maintenance Considerations
To obtain reliable measurements, the probe must be installed according to the applicable mechanical and electrical requirements.
– Confirm the complete model number. Check every character of the ordering code, including the final suffix.
– Verify mounting dimensions. Thread size, case length, unthreaded length, and available clearance must match the installation.
– Check cable and connector compatibility. A probe that fits mechanically may still be unsuitable if its connector or cable configuration does not match the installed system.
– Confirm sensor compatibility. The probe must be used with a compatible Proximitor Sensor and monitoring system.
– Observe the required probe gap. The probe-to-target gap must be set according to the system’s installation procedure.
– Check the target surface. Target material, shaft geometry, surface condition, and runout can affect measurement results.
– Route cables appropriately. Cable routing should minimize mechanical damage, excessive bending, connector stress, and interference with moving equipment.
– Verify environmental limits. Temperature, vibration, moisture exposure, and any required hazardous-area approvals must be considered.
– Review signal behavior after installation. Where required, check the measurement output and calibration using the appropriate procedures and instruments.
– Record the installed configuration. Keeping the complete model number, installation dimensions, sensor type, and calibration information simplifies future maintenance and replacement.
8. Five Related Models and Series Options
The following models and product families are related to proximity measurement and rotating-machinery monitoring. Exact suffixes and technical specifications vary by configuration, so the table provides practical selection information rather than treating all listed items as direct substitutes.
| Model | Product series/type | Main function | Key parameters and selection notes | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 330710-00-05-50-02-05 | 3300 XL 11 mm proximity probe | Shaft vibration and displacement measurement | 11 mm-class probe; nominal linear range approximately 4.0 mm with a compatible system; connector and approval options must be confirmed | Configuration-dependent; verify drawing | Not verified |
| 330710 series | 3300 XL 11 mm proximity probe | Non-contact shaft measurement | Multiple ordering configurations may be available for mounting, cable, connector, and approval options | Depends on exact part number | Depends on configuration |
| 330101 series | 3300 XL 8 mm proximity probe | Shaft vibration and displacement measurement | 8 mm-class probe family; specifications and mounting arrangement differ from the 11 mm family | Depends on exact part number | Depends on configuration |
| 330102 series | 3300 XL 8 mm proximity probe | Non-contact position and vibration measurement | Select according to thread, case length, cable length, connector, and system compatibility | Depends on exact part number | Depends on configuration |
| 330103 series | 3300 XL 8 mm proximity probe | Rotating machinery monitoring | Related probe family; verify the complete ordering code before selecting it as a replacement | Depends on exact part number | Depends on configuration |
Selection note: The related models above are not all guaranteed to be interchangeable with the 330710-00-05-50-02-05. The 3300 XL 8 mm and 11 mm families have different probe geometries and may require different configuration checks. Always match the installed measurement system and mechanical arrangement.
9. Five Popular Bently Nevada Models for Machinery Monitoring
The following products are commonly encountered within industrial machinery monitoring systems. They perform different functions and should be selected according to the measurement requirement rather than treated as direct substitutes for the 330710 probe.
| Model | Product type | Main application | Key parameters and characteristics | Dimensions | Weight (kg) |
|---|---|---|---|---|---|
| 3300 XL 8 mm Proximity Probe | Proximity probe | Shaft vibration and displacement | 8 mm-class eddy-current probe family; compatible components and exact range depend on the configuration | Model-dependent | Not verified |
| 3300 XL 11 mm Proximity Probe | Proximity probe | Shaft displacement and vibration | 11 mm-class probe family; approximately 4.0 mm nominal linear range with a compatible system | Model-dependent | Not verified |
| 3300 XL Proximitor Sensor | Signal-conditioning sensor | Converts probe measurements into usable system signals | Must be matched to the probe family, cable arrangement, and monitoring requirements | Model-dependent | Not verified |
| 3300 XL Extension Cable | Extension cable | Connects the proximity probe to the compatible sensor | Length and connector configuration must match the measurement chain | Depends on cable length | Depends on length |
| 3300 Monitoring System | Machinery monitoring equipment | Monitoring and protection of rotating machinery | Supports selected measurement channels, alarms, and system functions according to its configuration | Depends on rack and module arrangement | Depends on configuration |
These are product types and family-level references, not complete orderable part numbers. Before purchasing, identify the exact model and suffix needed for the intended installation.
10. Product Selection Comparison
| Selection factor | 330710-00-05-50-02-05 | Related 8 mm probe family | Proximitor Sensor | Extension Cable |
|---|---|---|---|---|
| Primary role | Measures relative shaft movement | Measures relative shaft movement | Conditions the probe signal | Connects probe and sensor |
| Directly measures shaft movement | Yes, as part of a compatible system | Yes, as part of a compatible system | No, processes the probe signal | No |
| Requires compatible system components | Yes | Yes | Yes | Yes |
| Mechanical fit is important | Yes | Yes | Relevant to mounting and installation | Relevant to routing and connectors |
| Cable configuration matters | Yes | Yes | Yes | Yes |
| Can replace the specified probe directly | Only with matching requirements | Not automatically | No; different function | No; different function |
| Dimensions and weight | Confirm exact drawing and unit | Confirm exact model | Confirm exact model | Depends on length and construction |
11. Ordering and Replacement Checklist
Before ordering the 330710-00-05-50-02-05, confirm the following items:
1. The complete part number matches the installed component.
2. The probe’s mounting thread, case length, and unthreaded length match the installation.
3. The cable length is appropriate for the distance between the probe and the sensor.
4. The connector type is compatible with the installed extension cable or sensor arrangement.
5. The probe is compatible with the existing Proximitor Sensor and monitoring equipment.
6. The required operating-temperature range and environmental approvals are satisfied.
7. The supplied unit’s dimensional drawing and net weight are available if these are needed for installation planning, inventory management, or shipping calculations.
8. Any replacement is checked for calibration and measurement-system compatibility before the machine is returned to service.
12. Summary
The Bently Nevada 330710-00-05-50-02-05 belongs to the 3300 XL 11 mm proximity probe family and is intended for non-contact measurement of shaft displacement, vibration, and relative position in industrial rotating machinery.
Its main value lies in providing measurement signals that can be integrated into a compatible machinery monitoring system. These signals support equipment-condition assessment, operating trend analysis, and machinery protection functions when used with the appropriate monitoring components.
For replacement and procurement, the most important considerations are the exact ordering code, mechanical dimensions, cable and connector configuration, sensor compatibility, and required approvals. Since the exact net weight and complete dimensional details of this particular configuration are not verified here, they should be confirmed from the product drawing or the actual supplied unit rather than estimated.