Bently Nevada 330730-080-00-00 XL 11mm Cable 8m

Bently Nevada 330730-080-00-00 3300 XL 11 mm Extension Cable

Product Introduction

The Bently Nevada 330730-080-00-00 belongs to the high-performance 3300 XL series of proximity transducer systems. This extension cable measures 8.0 metres (26.2 feet) and comes in the standard configuration without optional armor or special agency approvals. Manufactured in the U.S.A., this 3300 XL extension cable ensures precise signal transmission between the 11 mm probe and the Proximitor Sensor.

For critical machinery protection, this Bently Nevada cable uses 75Ω triaxial construction with FEP insulation. The gold-plated brass ClickLoc connectors lock securely into place, preventing accidental disconnection due to vibration. Additionally, the patented CableLoc design provides 330 N (75 lb) pull strength at the probe-to-cable interface, ensuring long-term reliability in harsh industrial environments.

Technical Specifications

The 330730-080-00-00 cable features 75 Ω triaxial, fluoroethylene propylene (FEP) insulated construction. Its typical capacitance is 69.9 pF/m (21.3 pF/ft), which maintains signal fidelity over the full 8.0-meter length. For this cable variant, the DC resistance from center conductor to center conductor measures 2.0 ± 0.5 ohms, while the coaxial conductor resistance is 0.6 ± 0.2 ohms.

The complete transducer system offers a linear range of 4.0 mm (160 mils), beginning at approximately 0.5 mm (20 mils) from the target and extending to 4.5 mm (180 mils). This corresponds to an output range of approximately –1 to –17 Vdc. Bently Nevada recommends a gap setting of 2.5 mm (100 mils) for optimal performance with AISI 4140 steel targets. Furthermore, the extended DSL range reaches up to 5.0 mm (200 mils) with a –1 to –19 Vdc output, though this does not apply when zener barriers are used.

Mechanical and Environmental Data

This 3300 XL cable utilizes a probe tip made of polyphenylene sulfide (PPS), while the probe case is constructed from AISI 304 stainless steel. The probe cable itself is a 75 Ω triaxial design with FEP insulation, available in total probe lengths of 1, 5, or 9 metres. For this extension cable, the weight is approximately 45 g/m (0.5 oz/ft) in its standard unarmored configuration.

The operating and storage temperature range spans from -52°C to +177°C (-62°F to +351°F), matching the rugged requirements of steam turbines and gas compressors. Additionally, the connector material is gold-plated brass, which resists corrosion and ensures low contact resistance over many mating cycles. The ClickLoc design provides a positive locking mechanism that prevents loosening even under severe vibration.

Installation Guidelines

When installing the Bently Nevada 330730-080-00-00, first verify that the total system length (probe length plus extension cable length) matches the Proximitor Sensor specification. For field wiring, use conductors sized 0.2 to 1.5 mm² (16 to 24 AWG), or 0.25 to 0.75 mm² (18 to 23 AWG) when utilizing ferrules. Bently Nevada strongly recommends three-conductor shielded triad cable for optimal noise immunity.

The maximum field wiring length between the 3300 XL Proximitor Sensor and the monitor is 305 meters (1,000 feet). However, always consult the frequency response graph for signal rolloff characteristics at high frequencies when using longer wiring runs. For installations in humid environments, consider using the connector protector option or the provided silicone tape. Nevertheless, avoid silicone tape in applications where the probe-to-extension cable connection will be exposed to turbine oil, as this may compromise the seal.

Packaging List

• Bently Nevada 330730-080-00-00 extension cable (8.0 metres, standard unarmored)

• Protective dust caps for connectors

• Silicone tape for connection sealing (where applicable)

• Cable routing clips (4 pieces)

• Quick-start installation guide

Note: Calibration certificates and warranty documents are not included in this package.

Shipping and Delivery

All orders ship via FedEx, UPS, or DHL with full tracking information. The gross weight for this item is 1.8 kg, and each unit is packaged in anti-static, shock-resistant materials. Expedited shipping options are available at checkout.

Frequently Asked Questions (FAQ)

1. Can I use the 330730-080-00-00 with a 5 mm or 8 mm probe?
No, this 3300 XL extension cable works exclusively with the 11 mm probe system. Its electrical characteristics and connector configuration match the 11 mm Proximitor Sensor only. Using it with other probe sizes will produce inaccurate gap voltage readings and may damage the transducer system.

2. What distinguishes the "standard" cable from the "armored" version?
The "-00-00" designation indicates a standard cable without stainless steel armor or special approvals. Armored versions (with "-01" or similar options) include a flexible AISI 302 SST braid with an FEP outer jacket, providing extra mechanical protection in abrasive or high-wear installations. The standard cable is lighter and more flexible, suiting most general-purpose applications.

3. How should I clean the ClickLoc connectors?
Use a soft, lint-free cloth lightly dampened with isopropyl alcohol to wipe the gold-plated contacts. Allow the connectors to dry completely before mating. Avoid using abrasive cleaners or excessive force, as this may damage the plating and degrade signal quality. Regular inspection of the connectors is recommended for installations in corrosive environments.

4. Does this cable support target materials other than AISI 4140 steel?
The Proximitor Sensor leaves the factory calibrated to AISI 4140 steel by default. However, Bently Nevada offers custom calibration to other target materials upon request. Contact our technical support team with your specific material composition to arrange for a calibrated system. Using an uncalibrated sensor with a different target material will result in linearity errors.

5. Can I use this cable in high-radiation or nuclear environments?
The Bently Nevada 330730-080-00-00 does not carry a specific rating for nuclear or high-radiation applications. Its FEP insulation and PPS tip material offer good chemical resistance, but prolonged exposure to ionizing radiation may degrade polymer properties. For such specialized applications, please consult Bently Nevada for custom-engineered solutions.