Bently Nevada 330730-040-10-05 Extension Cable 4m

Product Introduction

The Bently Nevada 330730-040-10-05 serves as a critical interconnection component within the 3300 XL proximity measurement system. This 11 mm extension cable extends the total system length, enabling flexible sensor placement while preserving measurement accuracy. Its design incorporates a 75 Ω triaxial cable with FEP insulation, ensuring consistent signal transmission over extended distances. Specifically, this model includes the FluidLoc cable option, which prevents oil and liquid migration through the cable interior, a common concern in turbine and compressor applications. Additionally, the "05" agency approval designation confirms multiple international certifications, simplifying global deployment.

Technical Specifications

The 3300 XL 11 mm Extension Cable delivers precise electrical characteristics essential for system performance. Its typical capacitance measures 69.9 pF/m (21.3 pF/ft), ensuring compatibility with the Proximitor sensor's oscillator circuit. The DC resistance from center conductor to center conductor (RCORE) is 1.0 ± 0.25 ohms, while the resistance from coaxial conductor to coaxial conductor (RJACKET) is 0.3 ± 0.1 ohms for the 4.0 metre length. Furthermore, the cable construction utilizes gold-plated brass connectors, providing excellent conductivity and corrosion resistance. The connector interface accepts field wiring from 0.2 to 1.5 mm² (16 to 24 AWG), with recommendations for three-conductor shielded triad cable for optimal noise immunity.

Mechanical and Environmental Ratings

This extension cable operates reliably across temperatures from -51°C to +177°C (-60°F to +351°F), matching the probe's environmental capabilities. The unarmored version weighs 45 g/m (0.5 oz/ft) with a total of 0.18 kg, while the optional AISI 302 SST armor with FEP outer jacket increases weight to 140 g/m (1.5 oz/ft) or 0.56 kg total. The maximum rated tensile strength is 330 N (75 pounds) at the probe case connection and 270 N (60 pounds) at the probe-to-extension cable connector, preventing damage during installation and maintenance. Meanwhile, the connector material utilizes gold-plated brass for reliable signal transfer and long-term durability.

FluidLoc and Connector Protection Features

The Bently Nevada 330730-040-10-05 incorporates the FluidLoc cable option, a significant advantage for oil-wetted environments. This feature prevents oil and other liquids from leaking out of the machine through the cable's interior, protecting both the sensor and the surrounding equipment. Additionally, each extension cable includes silicone tape for sealing probe-to-extension cable connections, though this tape is not recommended where the connection will be exposed to turbine oil. For humid or moist environments, connector protectors provide enhanced protection against moisture ingress and corrosion. Bently Nevada recommends connector protectors for all installations to maximize environmental protection and system reliability.

System Integration and Compatibility

When combined with a 3300 XL probe, this extension cable supports total system lengths of 5 or 9 metres, depending on the probe cable length selected. The system maintains a linear range of 4.0 mm (160 mils) with an incremental scale factor of 3.94 V/mm (100 mV/mil) ±10%, including interchangeability error. The recommended gap setting is 2.5 mm (100 mils) for optimal measurement performance. Moreover, field wiring can extend up to 305 metres (1,000 feet) between the Proximitor sensor and the monitor, though frequency response rolloff should be considered for high-frequency applications.

Installation Guidelines

Installing the 330730-040-10-05 extension cable requires careful attention to connector mating and torque specifications. First, inspect both the probe and extension cable connectors for damage or contamination. Next, align the connectors carefully and mate them firmly by hand until the connection seats properly. For the connector-to-connector interface, apply finger-tight torque only, with a maximum of 0.565 N•m (5 in•lb) to prevent thread or contact damage. Then, apply the provided silicone tape if the connection will not be exposed to turbine oil, or install the connector protector for humid or moist environments. Meanwhile, route the cable while maintaining a minimum bend radius of 25.4 mm (1.0 inch) to preserve internal conductor integrity. Finally, secure the cable using appropriate strain relief methods, avoiding tensile loads exceeding the rated 270 N at the connector interface.

Packaging List

• Bently Nevada 330730-040-10-05 3300 XL extension cable, 4.0 metre length (1 unit)

• FluidLoc cable with FEP insulation and triaxial construction

• Gold-plated brass connectors (pre-installed)

• Silicone tape for connection sealing

• Installation and torque specification sheet

FAQ

1. What is the total system length when using this extension cable with a 1.0 metre probe?
Combining the 330730-040-10-05 (4.0 m) with a 1.0 m probe yields a total system length of 5.0 metres, well within the 3300 XL system's supported range.

2. What does the FluidLoc cable option provide?
The FluidLoc cable prevents oil and other liquids from leaking through the cable interior, protecting both the sensor and the machine environment. This feature is especially valuable in turbine and compressor applications.

3. Can I use silicone tape with this extension cable in a turbine oil environment?
Bently Nevada does not recommend silicone tape for connections exposed to turbine oil. In such applications, use the connector protector option for reliable sealing and environmental protection.

4. What agency approvals does the "05" option include?
The "05" multiple approvals designation covers various international certifications, including ATEX, CSA, and FM, facilitating global installation and regulatory compliance.

5. How is this item shipped?
All orders are dispatched via FedEx, UPS, or DHL with comprehensive tracking and protective packaging to guarantee safe arrival.