Product Overview
When oil leaks, moisture intrusion, or cable damage threaten the integrity of your vibration monitoring system, the Bently Nevada 330730-040-03-05 extension cable provides a robust solution. This 3300 XL 11 mm extension cable is engineered for demanding industrial environments where signal fidelity is critical. With a 4.0-meter (13.1 feet) length, armored construction, and optional connector protector, it ensures reliable data transmission from your proximity probe to the monitor.
Technical Specifications
The Bently Nevada 330730-040-03-05 extension cable meets strict performance parameters. Below are key specifications from the manufacturer.
| Parameter |
Value |
| Extension cable capacitance |
69.9 pF/m (21.3 pF/ft) typical |
| Extension cable dc resistance (RCORE) |
1.0 ± 0.25 ohms (4.0 m length) |
| Extension cable dc resistance (RJACKET) |
1.0 ± 0.25 ohms (4.0 m length) |
| Operating and Storage Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Extension cable weight (unarmored) |
45 g/m (0.5 oz/ft); 0.18 kg total |
| Extension cable weight (armored) |
140 g/m (1.5 oz/ft); 0.56 kg total |
| Connector material |
Gold-plated brass |
| Extension cable material |
75 Ω triaxial, FEP insulated |
| Agency Approvals |
Multiple approvals (option 05) |
Industry Applications
In critical rotating machinery such as steam turbines, centrifugal compressors, and large pumps, the Bently Nevada 330730-040-03-05 excels where environmental hazards are common. The optional FluidLoc cable variant prevents oil from leaking through the cable interior, a frequent failure point in lubricated systems. The connector protector adds further defense against moisture and contaminants, making this cable ideal for humid or wet installations.
Installation & Setup Guidance
When installing the Bently Nevada 330730-040-03-05, follow these practices:
- Use the provided silicone tape or install the connector protector to seal the probe-to-cable connection. Avoid silicone tape in turbine oil applications; use the connector protector instead.
- Route the cable away from sharp edges and excessive heat sources.
- Ensure the locknut on the 11 mm probe is tightened with pre-drilled safety wire to prevent loosening.
- Maximum field wiring length between Proximitor Sensor and monitor is 305 meters (1,000 feet) using three-conductor shielded triad cable (0.2 to 1.5 mm²).
Maintenance & Reliability
Inspect the Bently Nevada 330730-040-03-05 cable connectors periodically for corrosion or wear. Verify dc resistance values against the spec (1.0 ± 0.25 ohms for both core and jacket) to detect early degradation. The FEP and SST armor offer excellent chemical resistance and mechanical protection, reducing replacement frequency. By choosing the connector protector option, you extend service life in moist environments.
Buying Guide
Before purchasing the Bently Nevada 330730-040-03-05, verify your system length (5 or 9 meters overall, including extension cable) and confirm you need the armored version. If your application involves exposure to oil or liquid ingress, select the FluidLoc option. UBEST Automation stocks genuine Bently Nevada parts, including this extension cable, with fast shipping and technical support to help you select the correct configuration.