Bently Nevada 330730-040-12-05 3300 XL Extension Cable

Bently Nevada 330730-040-12-05 3300 XL Extension Cable

Product Introduction

The Bently Nevada 330730-040-12-05 stands out as a specialized extension cable for the 3300 XL 11 mm proximity probe system. This model features the FluidLoc cable option, which effectively prevents oil and other process liquids from leaking through the cable interior. Moreover, it includes a connector protector, offering enhanced defense against moisture and humidity. The "040" length code signifies a 4.0-meter (13.1 feet) cable, which suits installations requiring a shorter, more direct connection. This cable carries multiple agency approvals, confirming its suitability for global industrial applications. Its robust triaxial FEP insulation maintains signal integrity, making it a reliable choice for critical machine protection systems.

Technical Specifications & Performance

The 330730-040-12-05 delivers consistent and accurate performance through carefully controlled electrical characteristics. Its typical capacitance measures 69.9 pF/m (highlighted in red) , which preserves the linearity of the proximity measurement. For this 4.0-meter version, the DC resistance from the center conductor (RCORE) registers at just 1.0 ± 0.25 ohms (highlighted in red) . Additionally, the coaxial conductor resistance (RJACKET) reads 0.3 ± 0.1 ohms (highlighted in red) . Such low resistance values minimize signal attenuation and ensure the Proximitor sensor receives a clean, undistorted signal. The cable uses a 75 Ω triaxial configuration, providing excellent shielding against electromagnetic interference commonly found near heavy machinery.

FluidLoc and Connector Protector Features

This particular model of the 3300 XL extension cable includes two significant protective features. First, the FluidLoc option plays a critical role in applications where the probe-to-extension cable connection faces exposure to oil. It creates a positive seal that stops leaks, protecting both the machinery and the environment. Second, the connector protector adds a layer of defense against moisture. This feature proves especially valuable in humid climates or wash-down areas. Bently Nevada recommends connector protectors for all installations to maximize system longevity. For less demanding environments, silicone tape serves as an alternative, though we do not recommend it for turbine oil applications.

Mechanical Properties and Durability

The cable's material construction ensures long-term reliability in harsh conditions. FEP insulation provides superior dielectric strength and resistance to chemicals. The standard cable weighs only 45 g/m, making it easy to handle and route. For installations needing extra protection, an armored version weighs 140 g/m. The operating temperature range spans exceptionally broad values, from -51°C to +177°C (-60°F to +351°F) (highlighted in red) . Therefore, the Bently Nevada 330730-040-12-05 suits high-temperature areas near steam turbines, compressors, and generators. Gold-plated brass ClickLoc connectors link all components in the transducer system, and these connectors lock securely to prevent loosening from vibration.

Compatibility and System Integration

This extension cable integrates fully with the entire 3300 XL transducer system. It connects to 3300 XL 11 mm probes, which come in various case configurations including armored and unarmored versions with thread sizes like ½-20, 5⁄8 -18, M14 X 1.5, and M16 X 1.5. The reverse mount probes feature 3⁄8-24 or M10 X 1 threads. For field wiring between the Proximitor sensor and the monitor, we recommend using a three-conductor shielded triad cable, with a maximum run of 305 meters. Proximitor sensors leave the factory calibrated to AISI 4140 steel, but we can provide custom calibrations upon request.

Installation Guidelines

Installing the Bently Nevada 330730-040-12-05 requires following a few key steps for optimal performance. First, always power down the system before connecting or disconnecting any cables. Next, attach the extension cable to the probe and the Proximitor sensor. Ensure the ClickLoc connectors engage fully by listening for the audible click. Then, secure the FluidLoc connection to achieve a proper oil-tight seal. Finally, route the cable carefully, avoiding sharp bends or contact with hot surfaces. For installations with potential moisture exposure, make sure the connector protector fits properly. The system works best with a probe gap setting of 2.5 mm (100 mils) for optimal linearity.

Packaging List

• 1 x Bently Nevada 330730-040-12-05 Extension Cable (4.0 meters) with FluidLoc

• 1 x Connector Protector (pre-installed)

• 1 x Set of Installation Instructions

• 1 x Silicone Tape (for optional sealing)

Shipping Method: Orders are shipped via FedEx, UPS, or DHL.

Frequently Asked Questions (FAQ)

Q1: What makes the Bently Nevada 330730-040-12-05 different from the standard cable?
A1: This model includes the FluidLoc option to prevent oil leakage and a connector protector for moisture resistance, making it ideal for oil-wetted and humid environments.

Q2: What is the length of the Bently Nevada 330730-040-12-05?
A2: The "040" in the product number signifies a length of 4.0 meters (13.1 feet).

Q3: What agency approvals does this 3300 XL extension cable carry?
A3: The "05" agency approval option indicates this cable has multiple approvals, suitable for installations requiring compliance with various international standards.

Q4: Can the 330730-040-12-05 work with armored probes?
A4: Yes, it connects to both armored and unarmored versions of the 3300 XL 11 mm probe, provided the connectors match.

Q5: What is the recommended alternative to the connector protector?
A5: Silicone tape provides an alternative, but we do not recommend it for applications where the connection will face exposure to turbine oil.