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- 330709-000-050-50-02-00
- 3300 XL 11mm Proximity Probe
- USA
- 50 mm
- 2kg
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Bently Nevada 330709-000-050-50-02-00 Proximity Probe
1. Product Overview
The Bently Nevada 330709-000-050-50-02-00 is a proximity probe model associated with the 3300 XL 11 mm product series. It is designed for non-contact measurement of the distance between the probe tip and a conductive target, typically a rotating shaft in industrial machinery.
Proximity probes are commonly used in machinery monitoring systems where continuous information about shaft movement is important. When installed with compatible signal-conditioning electronics, the probe can provide measurements used to monitor relative shaft vibration and displacement. These measurements help maintenance personnel observe changes in machine behavior and investigate possible mechanical problems.
The model number identifies a specific mechanical and cable configuration. The 050 segment corresponds to a 50 mm case-length option, while 50 identifies a 5.0 m cable-length configuration. The 02 segment identifies a miniature ClickLoc coaxial connector with standard cable. The final 00 indicates that an optional agency-approval package is not specified.
This model should be treated as a component of a complete measurement loop rather than a standalone monitoring instrument. Correct system matching, installation, and calibration are necessary for dependable readings.
2. Brand and Product Series
| Item | Description |
|---|---|
| Brand | Bently Nevada |
| Product series | 3300 XL 11 mm |
| Model | 330709-000-050-50-02-00 |
| Product type | Industrial proximity probe |
| Sensing technology | Eddy-current proximity sensing |
| Primary purpose | Non-contact shaft displacement and vibration measurement |
| Mounting thread | M16 × 1.5 |
| Unthreaded-length option | 0 mm |
| Case-length option | 50 mm |
| Cable-length option | 5.0 m |
| Connector type | Miniature ClickLoc coaxial |
| Cable configuration | Standard cable |
| Approval configuration | 00; optional agency approvals not specified |
| Typical use | Rotating-machinery condition monitoring |
| System requirement | Compatible probe cable, signal conditioner, and monitoring equipment |
3. Detailed Technical Parameters
The following table summarizes the configuration and principal characteristics. Where an exact value cannot be established confidently for this specific part number, it is identified as requiring confirmation rather than presented as a guaranteed specification.
| Parameter | Specification |
|---|---|
| Model | 330709-000-050-50-02-00 |
| Brand | Bently Nevada |
| Series | 3300 XL 11 mm |
| Sensor type | Non-contact proximity probe |
| Measurement principle | Eddy-current sensing |
| Thread size | M16 × 1.5 |
| Unthreaded length | 0 mm |
| Case length | 50 mm |
| Cable length | 5.0 m |
| Connector | Miniature ClickLoc coaxial connector |
| Cable type | Standard cable configuration |
| Approval suffix | 00; optional agency approvals not specified |
| Probe-tip material | PPS is used in this probe family; confirm the exact supplied configuration |
| Probe-case material | Stainless steel is used in this probe family; confirm the exact supplied configuration |
| Cable construction | Confirm against the exact configuration documentation |
| Measurement target | Suitable conductive surface |
| Main measurement | Relative shaft displacement and vibration, subject to installation design |
| Sensitivity | Confirm the specification for the complete compatible probe, cable, and signal conditioner |
| Linear range | Confirm against the applicable measurement-system specification |
| Operating temperature | Confirm the rated limits for the exact configuration |
| Probe dimensions | M16 × 1.5 thread; 50 mm case-length option; full dimensions require the mechanical drawing |
| Cable dimensions | 5.0 m cable length; diameter and connector dimensions require the applicable drawing |
| Package dimensions | Not confirmed for this exact model |
| Product weight (kg) | Not confirmed for this exact model |
| Shipping weight (kg) | Not confirmed; depends on packaging and supplied accessories |
| Installation type | Fixed mounting directed toward a suitable conductive target |
| Calibration requirement | Must match the compatible measurement loop |
Dimension note: the 50 mm specification is the case-length option, not the complete length of the assembly. The 5.0 m cable is a separate dimension. The mechanical drawing should be used for installation clearances and overall dimensions.
Weight note: product weight and shipping weight are different quantities. An exact weight in kilograms should be confirmed for the supplied item rather than estimated from the cable length or the dimensions of a shipping package.
4. Understanding the Model Number
The part number contains several fields that identify the probe’s mechanical dimensions and cable configuration.
| Code segment | Meaning | Specification |
|---|---|---|
| 330709 | Base model | 3300 XL 11 mm proximity probe with M16 × 1.5 thread |
| 000 | Unthreaded-length option | 0 mm |
| 050 | Case-length option | 50 mm |
| 50 | Cable-length option | 5.0 m |
| 02 | Connector and cable option | Miniature coaxial ClickLoc connector, standard cable |
| 00 | Agency approval option | Not required |
One important point is the 5.0 m cable configuration. This probe is intended for use with the corresponding 5.0 m measurement system. It should not be assumed compatible with a 1.0 m or 9.0 m system simply because the connector fits.
5. Product Introduction and Operating Principle
The probe operates through the eddy-current sensing principle. An electromagnetic field is generated at the sensing tip, and its interaction with a conductive target changes as the distance between the probe and the target changes.
In a typical installation, the target is a rotating shaft. As the shaft moves, the probe responds to changes in the gap. Compatible signal-conditioning electronics convert this response into a measurement signal that can be interpreted by a monitoring system.
This arrangement allows shaft movement to be monitored without the sensing tip making routine physical contact with the rotating surface. It is particularly useful for machinery that operates continuously or at high rotational speeds.
The probe does not independently identify the cause of a fault. A change in vibration or displacement is a measurement that engineers evaluate alongside operating speed, load, bearing condition, temperature, and other machine information.
6. Main Applications
6.1 Steam and Gas Turbines
In suitable turbine installations, proximity probes are used to measure shaft movement near designated bearing locations. The measurements can support vibration monitoring and help engineers observe changes during startup, normal operation, and shutdown.
6.2 Industrial Compressors
Large centrifugal compressors often require continuous monitoring because unplanned downtime can be costly. A compatible probe system can provide shaft-displacement data that helps maintenance teams track operating trends and investigate abnormal changes.
6.3 Pumps and Rotating Equipment
The probe can be used on suitable pumps and other rotating machines when the mounting arrangement and target geometry are designed for proximity sensing. The application must provide a suitable conductive target and an appropriate measurement range.
6.4 Axial Shaft Position
In an installation designed for axial measurement, a proximity probe can monitor movement along the shaft axis. This can help assess changes in relative shaft position, provided that the probe location and monitoring system are suitable for the intended measurement.
6.5 Machinery Condition Monitoring
When integrated into a compatible monitoring system, the probe supplies data that can be trended and compared with configured limits. This supports condition assessment and helps maintenance personnel determine when further inspection may be necessary.
7. Product Advantages
| Advantage | Description |
|---|---|
| Non-contact measurement | Measures the distance to a conductive target without routine physical contact |
| 11 mm sensing design | Suits machinery installations designed around the 3300 XL 11 mm family |
| 50 mm case length | Provides a defined case-length option for compatible mounting arrangements |
| 5.0 m cable | Supports installations designed for this cable length |
| Standard ClickLoc connector | Provides a defined connector arrangement for compatible system components |
| Metric thread | M16 × 1.5 mounting interface |
| Continuous monitoring capability | Supports repeated measurements while the machine is operating |
| Displacement measurement | Provides information about relative shaft movement |
| Maintenance support | Historical measurements help engineers identify changes from normal operating behavior |
| Defined configuration | The full part number helps distinguish the required probe from similar models |
The main advantage is the ability to monitor shaft movement without direct contact at the sensing tip. However, reliable measurements depend on correct installation, suitable target geometry, proper gap setting, cable condition, and compatibility with the signal-conditioning electronics.
8. Five Related Models
The following models are useful for comparison within the same series. The alternatives have different cable lengths, case lengths, connector options, or approval configurations, so their interchangeability must be confirmed.
| Model | Product type | Main parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330709-000-050-50-02-05 | 3300 XL 11 mm proximity probe | 50 mm case; 5.0 m cable; standard ClickLoc connector; multiple approvals | M16 × 1.5 thread; 50 mm case; 5.0 m cable | Not confirmed |
| 330709-000-050-50-01-00 | 3300 XL 11 mm proximity probe | 50 mm case; 5.0 m cable; ClickLoc connector with protector; no optional approvals | M16 × 1.5 thread; 50 mm case; 5.0 m cable | Not confirmed |
| 330709-000-050-50-11-00 | 3300 XL 11 mm proximity probe | 50 mm case; 5.0 m cable; FluidLoc cable; ClickLoc connector with protector | M16 × 1.5 thread; 50 mm case; 5.0 m cable | Not confirmed |
| 330709-000-040-50-02-00 | 3300 XL 11 mm proximity probe | 40 mm case; 5.0 m cable; standard ClickLoc connector | M16 × 1.5 thread; 40 mm case; 5.0 m cable | Not confirmed |
| 330709-000-060-50-02-00 | 3300 XL 11 mm proximity probe | 60 mm case; 5.0 m cable; standard ClickLoc connector | M16 × 1.5 thread; 60 mm case; 5.0 m cable | Not confirmed |
These models are alternatives for technical comparison, not automatic substitutes. In particular, retain the 5.0 m measurement-system configuration when replacing a 5.0 m probe, and confirm the case length and connector option against the installed equipment.
9. Five Other Common Models from the Same Brand
These products are used in related machinery monitoring systems but perform different functions. They should not be treated as direct replacements for the probe.
| Model | Product type | Main parameters or function | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330180-50-00 | Proximitor sensor | Signal-conditioning component for a compatible proximity probe system | Exact enclosure dimensions require the applicable drawing | Not confirmed |
| 330130-040-00-00 | Extension cable | Cable component for a compatible proximity measurement loop | Cable length and connector dimensions require confirmation | Not confirmed |
| 330103-00-05-10-02-00 | Proximity probe | Related probe-family configuration; verify the exact thread and suffix options | Confirm against the model drawing | Not confirmed |
| 330104-00-05-10-02-00 | Proximity probe | Related proximity probe for compatible machinery measurement installations | Confirm against the model drawing | Not confirmed |
| 3500/42M | Machinery monitoring module | Vibration and position monitoring within a compatible rack-based system | Confirm module dimensions and rack requirements | Not confirmed |
A probe senses movement at the target, an extension cable connects compatible components, a Proximitor sensor conditions the signal, and a monitoring module processes the measurement. The correct combination depends on the system design and the intended measurement.
10. Dimensions and Weight for Procurement
| Item | Specification |
|---|---|
| Model | 330709-000-050-50-02-00 |
| Mounting thread | M16 × 1.5 |
| Unthreaded length | 0 mm |
| Case length | 50 mm |
| Cable length | 5.0 m |
| Connector | Miniature coaxial ClickLoc |
| Cable configuration | Standard cable |
| Overall mechanical dimensions | Refer to the exact model drawing |
| Package dimensions | Not confirmed for this exact model |
| Product weight (kg) | Not confirmed |
| Shipping weight (kg) | Not confirmed; depends on packaging and included accessories |
The complete mechanical dimensions should be taken from the applicable drawing. The 50 mm case length is not the overall assembly length, and the 5.0 m cable should be treated separately from the probe body.
Product weight and gross shipping weight should also be recorded separately. If a purchase order requires a precise weight in kilograms, request the figure for the actual supplied configuration rather than relying on an estimate.
11. Installation and Maintenance
Before installation, confirm the complete part number and verify that the probe matches the existing mounting arrangement. Check the M16 × 1.5 thread, case length, cable length, connector, and approval requirements.
The probe should be mounted securely and directed toward the intended conductive target. The initial gap must be set according to the instructions for the compatible probe, cable, and signal-conditioning system.
During commissioning, verify that the signal is stable and consistent with the machine’s operating condition. Route the cable so it is protected from crushing, sharp bends, excessive tension, and avoidable electrical interference.
For routine maintenance, inspect the probe body, cable jacket, connector, and mounting hardware. If the reading becomes unstable, check the complete measurement loop and target condition before deciding that the probe itself needs replacement.
12. Purchasing Checklist
13. Conclusion
The Bently Nevada 330709-000-050-50-02-00 is a 3300 XL 11 mm proximity probe configured with an M16 × 1.5 mounting thread, a 50 mm case length, a 5.0 m cable, and a miniature ClickLoc coaxial connector with standard cable.
Its primary role is to provide non-contact shaft-displacement measurements for a compatible machinery monitoring system. Depending on the installation, these measurements can support shaft vibration and relative-position monitoring in turbines, compressors, pumps, and other suitable rotating machinery.
When selecting a replacement, the complete part number, cable length, case length, connector arrangement, and system compatibility should all be checked. Exact product weight and package dimensions should be confirmed for the supplied item before being entered into formal technical or shipping documentation.