Introduction
The Bently Nevada 330130-045-03-RU is a 3300 XL Standard Extension Cable designed to provide a reliable connection between compatible 3300 XL proximity probes and Proximitor-based monitoring systems.
With a 4.5 m (14.8 ft) cable length, this configuration is well suited to machinery installations where the proximity probe is positioned some distance from the signal-conditioning electronics. The cable is part of the 330130 family used with Bently Nevada 3300 XL proximity transducer systems, providing a dedicated signal path for shaft vibration, displacement, and position measurements.
The standard 3300 XL extension-cable construction uses a 75 Ω triaxial cable with FEP insulation and protective armor, combining electrical shielding with mechanical protection. The cable is designed for industrial machinery environments where stable signal transmission and resistance to installation-related stresses are important.
For replacement projects, the 330130-045-03-RU is particularly useful when the existing installation requires a 4.5-meter armored extension cable and the original probe-to-Proximitor configuration needs to be preserved.
Technical Specifications
The 330130-045-03-RU belongs to the 3300 XL extension-cable family. The 045 length designation corresponds to approximately 4.5 m, while the 03 configuration identifies the applicable cable/termination arrangement. The RU suffix is a regional/configuration designation used on Bently Nevada ordering codes.
| Specification | Details |
|---|
| Manufacturer | Bently Nevada |
| Part Number | 330130-045-03-RU |
| Product Type | 3300 XL Standard Extension Cable |
| Cable Family | 330130 |
| System | 3300 XL Proximity Transducer System |
| Cable Length | 4.5 m / approximately 14.8 ft |
| Cable Type | 75 Ω triaxial cable |
| Standard Insulation | FEP |
| Armor | Protective metallic armor |
| Shielding | Triaxial/shielded construction |
| Probe Connection | Miniature coaxial interface |
| Proximitor Connection | Miniature coaxial interface |
| Minimum Bend Radius | 25.4 mm / 1.0 in |
| Typical Cable Weight | Approximately 34–37 g/m |
| Approximate Cable Weight at 4.5 m | Approximately 0.15–0.17 kg before connector/accessory differences |
| Typical Application | 3300 XL proximity measurement |
| Measurement Signals | Shaft vibration, displacement and position |
| Installation | Fixed industrial machinery monitoring |
| Environmental Design | Industrial rotating-equipment applications |
Applications
Shaft Vibration Measurement
The 330130-045-03-RU forms part of a proximity measurement chain used to monitor relative shaft vibration. The cable transfers the electrical signal between the proximity probe and compatible Proximitor electronics.
Shaft Displacement Monitoring
In rotating machinery, proximity probes can measure changes in the distance between the probe tip and the conductive shaft target. The extension cable provides the physical connection required to locate the electronics away from the measurement point.
Turbine Monitoring
Steam turbines and gas turbines often require multiple proximity channels around bearings and thrust positions. A 4.5 m extension cable provides additional installation reach where the monitoring electronics are located away from the machine casing.
Compressor Protection
High-speed compressors depend on accurate shaft-position and vibration information. The 330130-045-03-RU can be used within compatible 3300 XL monitoring channels to maintain the connection between field-mounted probes and signal-conditioning electronics.
Generator Applications
Large generators may use proximity probes to monitor shaft behavior around bearing locations. The armored extension cable provides a protected connection for installations where the sensing point and monitoring cabinet are separated.
Pump and Motor Monitoring
The cable can also be incorporated into monitoring systems for pumps, motors, fans, and other rotating assets requiring non-contact shaft measurement.
Replacement of Existing Extension Cables
When an existing 3300 XL extension cable has experienced insulation deterioration, mechanical damage, connector wear, or installation-related problems, an equivalent 330130 configuration can provide a straightforward replacement solution.
Machinery Protection Systems
The cable can be used as part of a complete machinery protection channel consisting of a proximity probe, extension cable, Proximitor sensor, and monitoring system.
Advantages
4.5-Meter Installation Reach
The 4.5 m / 14.8 ft length provides practical flexibility for machinery installations where the probe and Proximitor are not located next to each other. It can simplify cable routing around equipment frames, bearing housings, and control cabinets.
Robust Armored Construction
The armored design adds mechanical protection around the underlying instrumentation cable. This is particularly valuable in industrial areas where cables may encounter vibration, accidental contact, or challenging routing conditions.
75 Ω Triaxial Cable
The 75 Ω triaxial construction is an important part of the 3300 XL signal architecture. It provides a controlled and shielded electrical path for proximity-transducer signals.
FEP Insulation
FEP insulation is well suited to industrial instrumentation applications and provides a durable dielectric around the internal conductors.
Reduced Electrical Interference
The shielded/triaxial construction helps limit the influence of electrical noise on the proximity signal, supporting stable measurement performance when the cable is correctly installed and terminated.
Compact Cable Profile
Despite the protective armor, the extension cable maintains a relatively compact profile. This allows it to be routed through constrained machinery areas without requiring excessive installation space.
Defined Bend Radius
The specified 25.4 mm minimum bend radius provides installers with a clear mechanical guideline and helps avoid unnecessarily sharp cable bends.
Compatibility with the 3300 XL Platform
The cable is designed specifically for the 3300 XL proximity-transducer architecture. Using the appropriate extension cable maintains the intended electrical characteristics of the measurement chain.
Suitable for Critical Machinery
The cable is appropriate for monitoring systems used on critical rotating equipment where consistent signal transmission is an essential part of the overall protection strategy.
Technical FAQs
1. What is the Bently Nevada 330130-045-03-RU?
It is a 3300 XL Standard Extension Cable used to connect compatible Bently Nevada proximity probes with the associated Proximitor and monitoring system.
2. How long is the 330130-045-03-RU?
The cable length is 4.5 m, equivalent to approximately 14.8 ft.
3. What type of cable does it use?
The 3300 XL extension-cable family uses a 75 Ω triaxial cable with FEP insulation. The armored configuration adds mechanical protection around the cable. (bently.nt-rt.ru)
4. Is the 330130-045-03-RU armored?
Yes. The -03 configuration is associated with an armored 3300 XL extension-cable arrangement, providing additional mechanical protection for industrial installation.
5. What is the cable diameter?
Published 3300 XL specifications identify approximately 3.7 mm maximum outside diameter for the basic cable, approximately 7.6 mm maximum for the armor, and approximately 9.0 mm maximum at the armor ferrule, depending on the exact configuration. (bently.nt-rt.ru)
6. What is the minimum bend radius?
The minimum recommended bend radius is 25.4 mm (1.0 inch). Installation should avoid tighter bends that could place unnecessary stress on the cable or connectors. (bently.nt-rt.ru)
7. What is the approximate weight?
Published Bently Nevada 3300 XL documentation gives an extension-cable weight of approximately 37 g/m (0.4 oz/ft). For a 4.5 m cable, this corresponds to roughly 0.17 kg for the cable itself, before accounting for connector hardware, protectors, and packaging. (bently.nt-rt.ru)
8. What equipment is this extension cable used with?
It is intended for compatible 3300 XL proximity transducer systems, connecting proximity probes to associated Proximitor signal-conditioning electronics.
9. Can the cable be used with a standard 3300 XL 8 mm probe?
The 330130 family is designed for the 3300 XL proximity-transducer system, but the exact probe, extension-cable length, connector arrangement, and Proximitor configuration should be matched before replacement. A visually similar cable is not necessarily electrically interchangeable.
10. Can a generic coaxial cable replace the 330130-045-03-RU?
A generic coaxial cable should not be considered an automatic substitute. The 3300 XL system depends on defined cable characteristics, connector geometry, impedance, shielding, and total electrical length. For maintenance work, matching the complete Bently Nevada part-number configuration is the safer approach.
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