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- 330901-11-43-10-02-05
- 3300 NSv Proximity Probe
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Bently Nevada 330901-11-43-10-02-05 — Product Description, Technical Parameters, Applications, Advantages, and Related Models
1. Product Overview
The Bently Nevada 330901-11-43-10-02-05 is a model number associated with the 3300 XL proximity probe product family. This family is designed for non-contact measurement of shaft displacement and relative vibration in industrial rotating machinery.
A proximity probe works by generating an electromagnetic field near a conductive target, typically a machine shaft. As the distance between the probe tip and the shaft changes, the electrical response changes accordingly. When connected to compatible signal-conditioning electronics and machinery monitoring equipment, the resulting signal can be used to monitor shaft movement and support machinery condition assessment.
The 3300 XL product family is used in industrial environments where reliable, continuous measurement is important. Typical applications include turbines, compressors, pumps, generators, and other rotating machines. These measurements can help maintenance personnel observe changes in operating behavior, investigate abnormal vibration, and make better-informed maintenance decisions.
Important model-identification note: The complete ordering code contains several configuration fields, and the precise meaning of each field should be confirmed before treating the model as a specific probe length, cable arrangement, or connector configuration. The technical description below focuses on the 3300 XL proximity probe family. Exact dimensions, weight, and configuration-specific details are identified separately where they cannot be established confidently from the model number alone.
2. Brand and Product Series
| Parameter | Description |
|---|---|
| Brand | Bently Nevada |
| Product series | 3300 XL |
| Model number | 330901-11-43-10-02-05 |
| Product category | Proximity probe / displacement sensor |
| Measurement technology | Non-contact eddy-current sensing |
| Primary function | Relative shaft vibration and position measurement |
| Typical measurement target | Conductive metal shaft or compatible target surface |
| Typical system components | Probe, compatible extension cable where required, Proximitor sensor, and monitoring equipment |
| Typical industries | Power generation, oil and gas, petrochemical processing, manufacturing, and heavy industry |
| Installation type | Machine-mounted proximity measurement |
| Main purpose | Providing shaft-motion signals for compatible machinery monitoring systems |
3. Detailed Technical Parameters
The model number can be interpreted using the 3300 XL NSv proximity probe ordering structure. In this structure, the base model identifies the probe family, while the following fields specify the mechanical lengths, cable length, connector arrangement, and approval option.
| Parameter | Specification |
|---|---|
| Complete model number | 330901-11-43-10-02-05 |
| Brand | Bently Nevada |
| Product series | 3300 XL NSv |
| Product type | Small-target proximity probe |
| Base model | 330901 |
| Probe mounting thread | 1/4-28 UNF |
| Probe armor | Unarmored |
| Unthreaded length | 1.1 in (27.94 mm) |
| Overall case length | 4.3 in (109.22 mm) |
| Total cable length | 1.0 m (3.28 ft) |
| Cable type | Standard 75-ohm coaxial cable |
| Connector | Miniature coaxial ClickLoc connector |
| Connector protector | Not included in the specified connector option |
| Approval option | Multiple approvals; confirm the delivered unit’s marking and applicable certification |
| Probe tip material | Polyphenylene sulfide (PPS) |
| Probe case material | AISI 304 stainless steel |
| Measurement principle | Eddy-current proximity sensing |
| Measurement target | Small conductive target or compatible metal shaft |
| Typical measurement functions | Relative shaft vibration, static displacement, shaft position, and phase-reference measurements in a suitable system |
| Probe operating and storage temperature | −52°C to +177°C, subject to the applicable specification and installation conditions |
| Minimum cable bend radius | Approximately 25.4 mm |
| Overall probe dimensions | Case length 109.22 mm; other dimensions depend on the probe drawing |
| Cable length included in overall installation length | 1.0 m |
| Approximate net weight | About 0.05 kg as a planning estimate; exact model-specific mass requires confirmation |
| Approximate shipping-package dimensions | Not confirmed; the package is larger than the probe itself |
| Shipping weight | Not confirmed; depends on packaging and accessories |
3.1 Understanding the Ordering Code
| Code segment | Meaning |
|---|---|
| 330901 | 3300 XL NSv proximity probe, 1/4-28 UNF thread, without armor |
| 11 | 1.1-inch unthreaded length |
| 43 | 4.3-inch overall case length |
| 10 | 1.0 m total cable length |
| 02 | Miniature coaxial ClickLoc connector with standard cable, without connector protector |
| 05 | Multiple-approval option |
The unthreaded length and overall case length describe different portions of the probe body. They should not be confused with the total cable length. For this model, the probe case is approximately 109.22 mm long, while the attached cable is specified as 1.0 m.
The connector option is also important. A connector without a protector is not mechanically identical to a version supplied with one. If the probe is being used as a replacement, the installed connector arrangement should be checked before the new unit is fitted.
4. Measurement Principle and Performance
The 3300 XL NSv probe uses eddy-current sensing. An electrical oscillator in the compatible signal-conditioning system drives the probe, generating an electromagnetic field around its tip. When a conductive target is placed within the operating range, the target affects the field and changes the probe system’s electrical response.
The system converts this response into a signal related to the distance between the probe and the target. When properly installed and calibrated, the signal can be used to monitor small changes in shaft movement without requiring the probe to touch the shaft.
The NSv family is intended for applications involving small targets and restricted side clearance. This makes it useful where a conventional larger probe cannot be positioned conveniently or where the machine’s geometry calls for a small-target sensing arrangement.
| Measurement characteristic | Description |
|---|---|
| Sensing method | Non-contact eddy-current |
| Target requirement | Conductive metal compatible with the probe system’s calibration |
| Output relationship | Electrical response changes with probe-to-target distance |
| Static measurement | Can support position and displacement measurements in a compatible system |
| Dynamic measurement | Can support relative shaft vibration measurements |
| Phase-reference use | Possible when installed and configured as part of an appropriate monitoring arrangement |
| Contact with rotating shaft | Not required during normal operation |
| Signal conditioning | Requires a compatible NSv signal-conditioning component |
| Calibration | Must match the specified probe, cable, sensor, target, and monitoring configuration |
The probe is only one part of the measurement chain. Its performance depends on the matching sensor, cable length, target material, probe gap, wiring, and monitor configuration. A probe should not be assumed compatible with a different sensing family simply because the connector looks similar.
5. Product Introduction
The Bently Nevada 330901-11-43-10-02-05 is a small-target proximity probe designed for machinery installations where accurate, non-contact shaft measurement is required in a restricted mounting area.
The 3300 XL NSv family addresses measurement situations in which the target is relatively small or the available clearance limits the use of conventional proximity probes. Its compact sensing tip and small mounting thread allow it to be considered for equipment layouts where the available space around the measurement point is limited.
The specified probe has a 1/4-28 UNF mounting thread, an unthreaded section of 1.1 inches, a case length of 4.3 inches, and a 1.0 m cable. Its stainless-steel case and PPS probe tip are intended for industrial sensing applications. The standard coaxial cable and miniature ClickLoc connector provide the electrical interface to the compatible signal-conditioning equipment.
The probe does not independently display vibration values or issue machinery shutdown commands. Instead, it provides the sensing element for a complete measurement system. The compatible sensor conditions the probe signal, while the monitoring equipment interprets the signal for vibration, position, or other supported measurement functions.
For maintenance teams, the key selection criteria are the target size, mounting thread, required case length, cable length, connector style, environmental limits, and approval requirements. These details determine whether the probe can be installed properly and whether it can operate as part of the existing monitoring system.
6. Product Applications
6.1 Steam and Gas Turbines
Turbines operate at high rotational speeds and may require continuous monitoring of shaft vibration and relative position. A suitable NSv measurement arrangement can provide shaft-motion signals to the monitoring system.
The compact probe design may be useful at measurement points where the target or available mounting clearance is too small for a conventional larger probe. Selection must be based on the turbine’s measurement geometry and the requirements of the monitoring system.
6.2 Small-Target Rotating Machinery
The NSv family is particularly relevant where the target dimensions or side clearance make conventional proximity probes difficult to use. It can be considered for specific shafts, rotating components, and other conductive targets that fall within the approved measurement configuration.
The target material, surface condition, probe orientation, and installed gap should be checked carefully because these factors affect the measurement response.
6.3 Pumps and Process Equipment
Some industrial pumps and process machines require shaft displacement or vibration measurement at locations with limited mounting space. A compact proximity probe can provide the necessary sensing element when the machine design supports this method.
The probe can be connected to a compatible monitoring system for ongoing observation of machine behavior. It should be selected according to the pump design, shaft material, mounting arrangement, and required measurement function.
6.4 Compressors and Blowers
Compressors and blowers may use proximity measurement to observe relative shaft movement or other supported displacement parameters. In suitable installations, the NSv probe’s small-target design can be helpful when the measurement target is relatively small or the available clearance is restricted.
The correct sensing system must be selected for the compressor’s speed, target geometry, installation environment, and monitoring requirements.
6.5 Electric Motors and Generators
For suitable rotating electrical machinery, a proximity probe can contribute to shaft-position or vibration monitoring when the machine has an appropriate target and mounting arrangement.
The probe is not a universal solution for all motor and generator vibration measurements. Its suitability depends on the specific measurement objective and the compatibility of the complete sensing chain.
6.6 Industrial Utilities and Manufacturing Equipment
In manufacturing and utility environments, rotating equipment can be monitored to identify changes in operating behavior and support planned maintenance.
The 3300 XL NSv probe may be considered for installations where a small-target measurement system is needed. The operating environment, connector protection, cable routing, and mounting geometry should all be assessed before installation.
7. Product Advantages
7.1 Compact Sensing Design
The NSv probe is designed for small-target measurement applications. Its relatively small sensing tip and 1/4-28 UNF mounting thread can help when the available mounting area is restricted.
This makes it a useful option to evaluate when a larger probe cannot be positioned correctly, provided the target and measurement requirements are compatible.
7.2 Non-Contact Measurement
The probe measures distance through an electromagnetic sensing principle rather than through direct mechanical contact.
Because the probe does not need to touch the rotating shaft, the measurement system can monitor relative movement without introducing a mechanical contact element at the sensing point.
7.3 Stainless-Steel Case
The specified case material is AISI 304 stainless steel. This provides a durable mechanical housing for the probe in suitable industrial installations.
Material selection alone does not guarantee compatibility with every process fluid, chemical, or environmental condition. The full installation requirements must still be reviewed.
7.4 Compact Cable and Connector Arrangement
The specified model has a 1.0 m standard cable and a miniature coaxial ClickLoc connector. This arrangement provides a defined electrical connection to compatible signal-conditioning equipment.
The connector option does not include the connector protector. If additional protection is required by the installation, it should be evaluated and specified appropriately rather than assumed to be included.
7.5 Support for Continuous Condition Monitoring
When integrated with a compatible sensor and monitoring system, the probe can provide signals for ongoing observation of shaft movement.
Trend data can help maintenance teams investigate abnormal conditions, compare operating behavior, and plan inspections. The probe itself does not independently identify every mechanical fault; reliable diagnosis requires the complete monitoring system and appropriate engineering interpretation.
7.6 Defined Mechanical Configuration
The ordering code specifies the mounting thread, unthreaded length, case length, cable length, connector type, and approval option. These details make it easier to compare the probe with an existing installation and identify the required replacement configuration.
Before ordering, the full code should be matched to the installed probe. Similar-looking models may have different case lengths, mounting threads, cable lengths, or approval options.
8. Installation and Maintenance Considerations
Before installation, check that the 1/4-28 UNF mounting thread matches the prepared mounting point. Confirm the required engagement length and make sure that the probe tip can be positioned correctly without contacting the target or interfering with nearby components.
The probe gap must be set according to the approved installation procedure for the complete NSv system. Do not estimate the gap solely by eye, because an incorrect gap can affect the operating point and measurement accuracy.
Route the cable so that it is not sharply bent, crushed, or exposed to unnecessary mechanical stress. The specified minimum cable bend radius is approximately 25.4 mm. The miniature connector should be handled carefully and protected from contamination during installation.
Before commissioning, verify the probe identity, cable length, compatible signal conditioner, monitoring-channel configuration, and required approvals. If the system produces an abnormal signal, inspect the complete measurement chain rather than assuming that the probe is the only possible cause.
During routine maintenance, examine the probe body, threaded mounting area, cable insulation, connector condition, and nearby wiring. If replacement is required, compare the complete ordering code and mechanical dimensions instead of selecting a model based only on its family name.
9. Five Related Models from the Same Series
The following models belong to, or are closely related to, the 3300 XL NSv proximity probe family. They provide useful comparison options for different mounting threads, cable protection arrangements, and mechanical configurations.
Dimensions and weights below are indicative. Probe case dimensions can be calculated from the ordering-code length fields where applicable; exact overall dimensions and net weights should be confirmed for the supplied model.
| Model | Product type | Main parameters | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330901-00-32-10-02-05 | 3300 XL NSv probe | 1/4-28 UNF thread, 3.2-inch case, 1.0 m cable, standard ClickLoc connector, multiple approvals | Case length approx. 81.28 mm; cable 1.0 m | Approx. 0.05; verify |
| 330902-11-43-10-02-05 | 3300 XL NSv probe with armor | 1/4-28 UNF thread, armored construction, 4.3-inch case, 1.0 m cable | Case length approx. 109.22 mm; cable 1.0 m | Approx. 0.06; verify |
| 330908-11-43-10-02-05 | 3300 XL NSv probe | 3/8-24 UNF thread, unarmored construction, 4.3-inch case, 1.0 m cable | Case length approx. 109.22 mm; cable 1.0 m | Approx. 0.05; verify |
| 330909-11-43-10-02-05 | 3300 XL NSv probe with armor | 3/8-24 UNF thread, armored construction, 4.3-inch case, 1.0 m cable | Case length approx. 109.22 mm; cable 1.0 m | Approx. 0.06; verify |
| 330903-11-43-10-02-05 | Metric 3300 XL NSv probe | M8 × 1 thread, unarmored construction, 4.3-inch case, 1.0 m cable | Case length approx. 109.22 mm; cable 1.0 m | Approx. 0.05; verify |
Selection notes:
– 330901-00-32-10-02-05: Consider when a shorter case is required but the 1/4-28 UNF mounting interface is suitable.
– 330902-11-43-10-02-05: Consider when an armored probe construction is required, subject to installation and cable-routing requirements.
– 330908-11-43-10-02-05: Consider when the installation specifically requires a 3/8-24 UNF mounting thread.
– 330909-11-43-10-02-05: Provides an armored option with a 3/8-24 UNF thread.
– 330903-11-43-10-02-05: Provides a metric M8 × 1 mounting interface.
These are comparison candidates, not guaranteed drop-in replacements. Differences in mounting thread, armor, case length, cable, and approvals can prevent direct substitution.
10. Five Commonly Used Models from the Same Brand
The following products cover related machinery monitoring functions, including conventional proximity probes, signal-conditioning sensors, and monitoring modules. They serve different roles and are not direct replacements for the 330901 NSv probe.
| Model | Product series / type | Main parameters and function | Dimensions | Weight (kg) |
|---|---|---|---|---|
| 330101-10-43-10-02-05 | 3300 XL 8 mm proximity probe | 3/8-24 UNF thread, 4.3-inch case, 1.0 m cable, standard ClickLoc connector, multiple approvals | Case length approx. 109.22 mm; cable 1.0 m | Approx. 0.05; verify |
| 330780-91-00 | 3300 XL 11 mm Proximitor sensor | Signal conditioning for compatible 11 mm proximity probe systems | Verify enclosure drawing | Approx. 0.255 |
| 330180-91-00 | 3300 XL 8 mm Proximitor sensor | Signal conditioning for compatible 8 mm proximity probe systems | Verify enclosure drawing | Verify exact version |
| 330130-040-00-00 | 3300 XL extension cable | Extension cable for compatible 3300 XL proximity measurement systems | Length and connector arrangement depend on configuration | Depends on cable length |
| 3500/42M | Machinery monitoring module | Supports compatible vibration and position monitoring channels | Depends on module and rack configuration | Verify module specification |
The 330101 model belongs to the conventional 3300 XL 8 mm probe family, which is intended for different target and mounting arrangements than the NSv small-target family. Compatibility should be confirmed before selecting it for an NSv installation.
The 330780 and 330180 are signal-conditioning products, not probes. They must be matched to the correct probe family and cable arrangement.
The 330130 extension cable is a system component. Cable length and connector details must be selected according to the complete transducer system requirements.
The 3500/42M is a monitoring module. It processes compatible measurement inputs within the larger monitoring arrangement and does not replace the physical sensing probe.
The dimensions and weights for complete sensor assemblies, cables, and rack modules vary by configuration. Use the exact ordering specification for procurement and installation planning.
11. Product Selection Recommendations
When selecting or replacing the 330901-11-43-10-02-05, the following points deserve particular attention.
Mounting thread: Confirm that the machine mounting point is designed for a 1/4-28 UNF probe. A probe with a different thread should not be installed without a properly engineered mounting solution.
Case length: The specified case length is 4.3 inches. Check the available clearance and required engagement before fitting the probe.
Cable length: The specified cable length is 1.0 m. Confirm that this length is suitable for the installed sensor arrangement and that the total electrical length complies with the system requirements.
Connector arrangement: The model uses a miniature coaxial ClickLoc connector without a connector protector. Check the connector at the receiving end and any protection requirements.
Approval requirements: The ordering code specifies a multiple-approval option, but the actual certification must be confirmed from the delivered unit’s markings and applicable documentation. Do not infer hazardous-area suitability from the model string alone.
Measurement-system compatibility: Confirm that the probe, cable, signal conditioner, and monitor are compatible as a complete system. Similar connectors do not establish electrical compatibility.
Dimensions and weight: Use the dimensioned probe drawing for installation and the packing specification for shipping. The estimated net weight of 0.05 kg is a planning reference, not a certified model-specific value.
12. Overall Assessment
The Bently Nevada 330901-11-43-10-02-05 is a 3300 XL NSv small-target proximity probe intended for non-contact measurement of shaft vibration and position in suitable industrial machinery.
Its main characteristics include a 1/4-28 UNF mounting thread, 1.1-inch unthreaded length, 4.3-inch case length, 1.0 m standard cable, miniature coaxial ClickLoc connector, and multiple-approval option. The small-target design makes it relevant to installations where limited clearance or target geometry constrains the use of conventional proximity probes.
The probe’s effectiveness depends on correct installation, suitable target material, accurate gap adjustment, and compatibility with the signal-conditioning and monitoring equipment. Its compact design and defined mechanical configuration can simplify selection for appropriate applications, but the exact installation must always be checked against the machine requirements.
For purchasing, maintenance, or replacement purposes, the complete ordering code should be preserved. The exact net weight and shipping dimensions should be confirmed from the relevant product drawing or packing specification before they are entered into formal equipment records.