Bently Nevada 330730-080-02-05 3300 XL Extension Cable 8m

Bently Nevada 330730-080-02-05 3300 XL Extension Cable

Product Introduction

The Bently Nevada 330730-080-02-05 is a precision-engineered 11 mm extension cable built for the 3300 XL proximity probe system. This 8.0-meter (26.2 feet) cable serves as the essential link between the probe and the Proximitor Sensor, enabling accurate machinery condition monitoring. It comes with the standard cable configuration and includes connector protectors to guard against moisture and humidity. Furthermore, this model carries the 05 agency approval option, signifying multiple international certifications for global deployment. The 3300 XL system is widely recognized for its reliability in critical rotating machinery such as turbines, compressors, and pumps.

Technical Specifications

The 3300 XL 11 mm Extension Cable delivers consistent electrical performance across its 8.0-meter length. The extension cable capacitance is typically 69.9 pF/m (21.3 pF/ft), ensuring minimal signal distortion. Additionally, the DC resistance from the center conductor to center conductor (RCORE) measures 2.0 ± 0.5 ohms, while the resistance from the coaxial conductor to coaxial conductor (RJACKET) is 0.6 ± 0.2 ohms. These values are directly proportional to the cable length, maintaining the system's overall accuracy.

The cable construction features a 75 Ω triaxial design with fluoroethylene propylene (FEP) insulation. This material choice offers excellent dielectric properties and resistance to chemicals and high temperatures. Moreover, the connectors are made of gold-plated brass with ClickLoc technology. This locking mechanism prevents accidental disconnection due to vibration, a common challenge in industrial environments. The same ClickLoc connectors are used across all 3300 XL transducer system components, ensuring compatibility and consistent performance.

For field wiring, the 330730-080-02-05 supports conductors from 0.2 to 1.5 mm² (16 to 24 AWG), or 0.25 to 0.75 mm² (18 to 23 AWG) when using ferrules. Bently Nevada recommends a three-conductor shielded triad cable for optimal noise immunity. The maximum distance between the Proximitor Sensor and the monitor is 305 meters (1,000 feet). However, longer field wiring lengths may affect high-frequency response, so users should consult the frequency response graph for their specific application.

Mechanical and Environmental Parameters

This model features the standard cable option (02) with connector protectors included. The connector protectors provide an additional barrier against moisture and humidity, making them suitable for installations in damp or wash-down environments. Bently Nevada recommends connector protectors for all installations, as they significantly enhance long-term reliability. Silicone tape is also supplied with each extension cable as an alternative protective measure, though it should not be used in applications where the connection point is exposed to turbine oil.

The operating and storage temperature range for this extension cable is -51°C to +177°C (-60°F to +351°F). This wide thermal tolerance allows the cable to perform reliably in extreme conditions, from cold start-ups to high-temperature turbine casings. The unarmored cable weighs 45 g/m (0.5 oz/ft), totaling approximately 0.36 kg for the full 8.0-meter length. The optional armored version weighs 140 g/m (1.5 oz/ft), totaling 1.12 kg, and features a flexible AISI 302 SST armor with an FEP outer jacket for enhanced mechanical protection.

The 3300 XL probe system incorporates several patented design features. The TipLoc molding method creates a robust bond between the probe tip and the probe body, preventing failure under thermal cycling. Additionally, the CableLoc design secures the probe cable to the probe tip with a pull strength of 330 N (75 pounds). These engineering innovations contribute to the system's exceptional durability and longevity in continuous operation.

System Performance Characteristics

When paired with the 3300 XL Proximitor Sensor, this extension cable supports a linear range of 4.0 mm (160 mils). The linear region begins at approximately 0.5 mm (20 mils) from the target and extends from 0.5 to 4.5 mm (20 to 180 mils), corresponding to output voltages from -1 to -17 Vdc. Furthermore, an extended Deviation from Straight Line (DSL) range is available from 0.5 to 5.0 mm (20 to 200 mils), covering -1 to -19 Vdc. The extended DSL range, however, cannot be used with zener barriers in intrinsically safe installations.

The recommended gap setting is 2.5 mm (100 mils), which centers the probe within the linear range for optimal measurement accuracy. The Incremental Scale Factor (ISF) is 3.94 V/mm (100 mV/mil) with a tolerance of ±10%, including interchangeability error. This calibration is performed at the factory using AISI 4140 steel as the reference target material. Calibration for other target materials is available upon request, ensuring flexibility for various machine applications.

Installation Guidelines

Proper installation of the 330730-080-02-05 is straightforward but requires attention to detail. First, inspect the connector ends for any debris or damage before mating. The ClickLoc connectors should be pushed together until they audibly click, confirming a secure lock. Second, install the connector protector over the joined connection to shield it from moisture and contaminants. If using silicone tape instead, wrap it tightly around the connection point, but avoid this method in turbine oil environments.

Third, route the cable with care to avoid sharp bends, kinks, or excessive tension. The standard cable is flexible, but the optional armored version provides additional protection in high-abrasion areas. Fourth, secure the cable using appropriate clamps or ties, ensuring it does not vibrate against machine surfaces. Finally, verify the probe gap setting at 2.5 mm (100 mils) using a proper gap measurement tool or voltage reading. The locknut with pre-drilled safety wire holes should be tightened and safety-wired to prevent loosening due to vibration.

Packaging List

• Bently Nevada 330730-080-02-05 3300 XL 11 mm Extension Cable (8.0 meters, standard cable with connector protectors)

• Silicone tape (for optional use)

• Installation instruction sheet

• Anti-static packaging bag

Shipping Information

All orders are shipped via FedEx, UPS, or DHL with full tracking capabilities. Standard packaging ensures the product arrives in perfect condition, ready for immediate installation.

Frequently Asked Questions

1. What is the difference between the 330730-040-13-CN and the 330730-080-02-05?
The primary differences are the cable length and configuration options. The 330730-080-02-05 is 8.0 meters long with standard cable and connector protectors, while the 330730-040-13-CN is 4.0 meters long with armored FluidLoc cable. The 330730-080-02-05 also carries multiple agency approvals (05) versus country-specific approval (CN).

2. Can I use this extension cable with a 5 mm or 8 mm Bently Nevada probe?
No. This 3300 XL 11 mm extension cable is specifically designed for the 3300 XL 11 mm probe system only. Using it with other probe sizes will result in incorrect impedance matching and measurement errors.

3. What does the multiple agency approval (05) mean for my installation?
The 05 approval option indicates that the product meets certification requirements for multiple global standards, including ATEX, CSA, and IECEx for hazardous area installations. This simplifies procurement for multinational facilities and ensures compliance with local regulations.

4. How do I clean the connector before installation?
Use a clean, lint-free cloth lightly moistened with isopropyl alcohol to wipe the gold-plated contacts. Allow the connector to dry completely before mating to prevent moisture entrapment that could affect signal quality.

5. Is the connector protector reusable after removal?
Yes, the connector protector is designed for repeated use. Inspect it for cracks or damage before each reinstallation. If the protector shows signs of wear, replace it to maintain proper environmental sealing.