Product Overview
When moisture, oil, or extreme temperatures threaten the integrity of proximity probe connections, the Bently Nevada 330730-040-02-05 3300 XL 11 mm Extension Cable provides a robust solution. This extension cable is engineered to maintain signal fidelity even in the most demanding industrial settings, ensuring reliable vibration monitoring and machine protection. As part of the 3300 XL series, the 330730-040-02-05 is designed for direct compatibility with Bently Nevada proximity probes and Proximitor sensors.
Technical Specifications Breakdown
The Bently Nevada 330730-040-02-05 extension cable delivers precise electrical and mechanical characteristics critical for accurate measurements. The table below summarizes the key parameters:
| Parameter |
Value |
| Cable Length |
4.0 meters (13.1 feet) |
| Extension Cable Capacitance |
69.9 pF/m (21.3 pF/ft) typical |
| DC Resistance (RCORE) |
1.0 ± 0.25 ohms |
| DC Resistance (RJACKET) |
0.3 ± 0.1 ohms |
| Operating & Storage Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Cable Weight (unarmored) |
45 g/m (0.5 oz/ft) — 0.18 kg total |
| Armored Cable Weight |
140 g/m (1.5 oz/ft) — 0.56 kg total |
| Material |
75 Ω triaxial, FEP insulated |
| Connector Material |
Gold-plated brass |
| Maximum Tensile Strength (probe case to lead) |
330 N (75 pounds) |
| Maximum Tensile Strength (connector) |
270 N (60 pounds) |
The Bently Nevada 330730-040-02-05 cable includes a standard connector protector to guard against moisture ingress. For oil-prone environments, the FluidLoc cable option prevents liquid leaking through the cable interior. Silicone tape is provided as an alternative, but should not be used when the connection is exposed to turbine oil.
Industry Applications
This 330730-040-02-05 extension cable is ideal for critical rotating machinery such as steam turbines, compressors, and pumps in petrochemical, power generation, and refining industries. Its wide temperature range and optional armor suit installations in high-vibration, high-temperature zones. The cable maintains linear range performance of 4.0 mm (160 mils) with an incremental scale factor of 3.94 V/mm (100 mV/mil) ±10%, ensuring accurate displacement measurements even under harsh conditions.
Installation & Setup Guidance
When installing the Bently Nevada 330730-040-02-05, secure the connector protector over the mating point to block humidity and debris. Use silicone tape only if the cable will not contact turbine oil; otherwise, always use the connector protector. Field wiring should be three-conductor shielded triad cable, 0.2 to 1.5 mm² (16-24 AWG), with maximum length of 305 meters (1,000 feet) to the monitor. Verify the 4.0 meter length (system length of 5 or 9 meters when combined with probe) and set the recommended gap of 2.5 mm (100 mils) for optimal linear range.
Maintenance & Reliability
Routinely inspect the cable jacket and connectors for wear or damage. The optional AISI 302 SST armor with FEP outer jacket provides exceptional resistance to abrasion and chemicals. The robust construction and gold-plated brass connectors minimize signal loss and corrosion. The Bently Nevada 330730-040-02-05 is built to operate continuously from -52°C to +177°C, offering long service life in extreme environments.
Selection Guide & Purchasing Advice
Before ordering, confirm your system length requirement (5 or 9 meters total including cable) and whether you need the armored or standard cable option. Also verify the FluidLoc feature if the cable will be immersed in oil. For expert assistance, contact UBEST Automation — your reliable source for genuine Bently Nevada replacement parts. We stock the 330730-040-02-05 and can help ensure you select the correct configuration for your machinery.