Introduction
The Bently Nevada 330173-00-11-05-11-RU is a 3300 5 mm Proximity Probe configured for non-contact measurement of shaft position and dynamic movement in rotating machinery. It belongs to the 330173 family, which uses an M8 × 1 metric thread and without-armor construction.
This particular configuration is built around an 0.0 mm unthreaded section, 110 mm overall case length, 0.5-meter cable, miniature coaxial ClickLoc connector with connector protection and FluidLoc cable, and RU agency-approval option. The complete ordering code is therefore important when selecting a replacement, particularly where the installation has strict mechanical, cable-routing, or certification requirements.
With its extended 110 mm case and FluidLoc cable arrangement, this version offers a specialized configuration within the 3300 5 mm range. It is well suited to compatible turbine, compressor, generator, pump, motor, and other rotating-equipment monitoring applications where reliable proximity measurement is required.
Technical Specifications
The 330173 model family identifies the 3300 5 mm probe with M8 × 1 thread and without armor. The remaining part-number positions define the mechanical length, cable length, connector arrangement, and agency approval. For the 330173-00-11-05-11-RU configuration, these details are particularly useful when verifying an existing installation.
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Model | 330173-00-11-05-11-RU |
| Product Type | 3300 5 mm Proximity Probe |
| Sensing Principle | Eddy-current, non-contact |
| Probe Family | 3300 5 mm |
| Base Model | 330173 |
| Mounting Thread | M8 × 1 |
| Construction | Without armor |
| Unthreaded Length | 0.0 mm |
| Overall Case Length | 110 mm (4.33 in) |
| Total Cable Length | 0.5 m (1.6 ft) |
| Connector | Miniature coaxial ClickLoc connector |
| Connector Configuration | Connector protection |
| Cable Type | FluidLoc cable |
| Probe Tip Diameter | Approximately 5.2 mm |
| Cable Impedance | 75 Ω |
| Typical Probe Temperature Range | Approximately -35°C to +177°C |
| Minimum Cable Bend Radius | Approximately 25.4 mm |
| Approximate Weight | 0.71 kg |
| Shipping Weight | Approximately 2 kg |
| Agency Approval | RU |
Applications
Steam and Gas Turbine Monitoring
The 330173-00-11-05-11-RU can be incorporated into suitable turbine monitoring systems to observe shaft displacement and rotor movement. Proximity measurements provide useful input for machinery protection and condition-monitoring strategies.
Compressor Rotor Measurement
Compressors operate with demanding rotational dynamics, making shaft-position and vibration measurements important for reliable operation. The 3300 5 mm system provides non-contact sensing for compatible compressor applications.
Generator Monitoring
Large generators can use proximity probes as part of a broader rotor-position and vibration monitoring system. The extended 110 mm case may be beneficial where the machine's probe installation requires additional physical length.
Pump and Motor Applications
The probe can be applied to compatible pumps, motors, and other rotating equipment requiring continuous shaft monitoring. Its M8 × 1 mounting thread makes it appropriate for metric mounting arrangements.
Fluid-Film Bearing Systems
Proximity measurement is especially useful on machinery with fluid-film bearings, where shaft position relative to the bearing can be an important operating parameter.
Machinery Protection Systems
When integrated with compatible Proximitor sensors and monitoring hardware, the probe can contribute to a machinery protection architecture designed to detect abnormal shaft movement and vibration.
Harsh Cable Environments
The FluidLoc cable configuration is a notable feature of this model. The cable arrangement is intended for applications where additional protection against fluid and environmental exposure is important, making it a useful option for demanding machinery installations.
Advantages
Extended 110 mm Case
The 110 mm overall case length provides substantial physical reach compared with shorter 330173 configurations. This can be particularly useful when the mounting arrangement places the sensing location deeper within the machine structure.
M8 × 1 Metric Thread
The M8 × 1 mounting thread provides a compact metric installation interface and clearly distinguishes the 330173 series from 330171 and 330172 families that use 1/4-28 UNF threading.
Compact 5 mm Sensing Technology
The 3300 5 mm design provides a compact probe tip suitable for machinery locations where installation space is restricted. The approximately 5.2 mm sensing tip supports non-contact measurement without requiring physical contact with the rotating target.
Short 0.5-Meter Cable
The 0.5 m cable length minimizes unnecessary cable in installations where the connection point is nearby. This can make routing cleaner and reduce excess cable management.
FluidLoc Cable
The FluidLoc cable is one of the most important differences between this configuration and standard-cable 330173 models. It adds a practical level of environmental protection for installations where exposure to fluids or harsh conditions must be considered.
Protected ClickLoc Connector
The miniature coaxial ClickLoc connector is specified with a connector protector, providing an additional level of mechanical protection around the connection area.
RU Approval Configuration
The final RU suffix identifies the agency-approval option. This is important when the probe is intended for a particular certified installation environment. Certification requirements should always be matched to the actual site specification before procurement.
Precise Replacement Matching
This probe is a strong choice when the existing installation specifically calls for 110 mm case length + 0.5 m cable + FluidLoc cable + protected ClickLoc connector. Using the complete part number helps avoid compatibility problems that can occur when selecting a probe based only on the nominal 5 mm sensing size.
Technical FAQs
1. What is the Bently Nevada 330173-00-11-05-11-RU?
It is a 3300 5 mm proximity probe with an M8 × 1 thread, without-armor construction, 110 mm case length, 0.5 m cable, protected miniature ClickLoc connector, FluidLoc cable, and RU approval configuration.
2. What does the 330173 series represent?
The 330173 family identifies a 3300 5 mm probe with M8 × 1 thread and without armor.
3. What does the first “00” mean?
The first 00 specifies a 0.0 mm unthreaded-length option.
4. What does “11” represent?
The 11 in the case-length position identifies the 110 mm overall case-length option, approximately 4.33 inches.
5. How long is the cable?
The 05 cable-length option specifies a 0.5-meter (1.6-foot) total cable length.
6. What type of cable does this probe use?
The 11 connector/cable option specifies a miniature coaxial ClickLoc connector with connector protection and FluidLoc cable. This is an important distinction from standard-cable configurations such as those using the 02 option.
7. Is this probe armored?
No. The 330173 family is the without-armor M8 × 1 version. If an installation requires an armored M8 × 1 probe, a corresponding 330174 configuration should be evaluated.
8. What is the approximate weight?
The listed product weight is approximately 0.71 kg, while the reported shipping weight is approximately 2 kg. The shipping figure includes packaging and should not be treated as the component's actual weight.
9. What is the purpose of the FluidLoc cable?
FluidLoc is a specialized cable configuration intended to provide enhanced resistance to fluid exposure compared with ordinary cable arrangements. It is useful for demanding industrial machinery environments where cable protection is an important consideration.
10. Can this probe directly replace another 3300 5 mm probe?
Not necessarily. The complete configuration should be checked, including case length, unthreaded length, M8 × 1 mounting thread, cable length, FluidLoc construction, connector protection, and approval option. Two probes can share the same 5 mm sensing format while still having different mechanical or environmental requirements.
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