Product Overview
The Bently Nevada 330930-040-00-CN is a 3300 NSv Extension Cable designed for industrial vibration monitoring systems. This 4.0-meter (13.1 feet) cable connects a 3300 XL NSv probe to a Proximitor Sensor, ensuring accurate signal transmission in demanding environments. Manufactured in the U.S.A., this extension cable features a 75 Ω coaxial construction with fluoroethylene propylene (FEP) insulation, delivering reliable performance across extreme temperatures.
Key Specifications
| Parameter |
Value |
| Cable Length |
4.0 meters (13.1 feet) |
| Connector Option |
Without stainless steel armor |
| Agency Approval |
CN – Approvals country specific |
| Extension Cable Material |
75 Ω coaxial, FEP insulated |
| Operating Temperature |
-51°C to +177°C (-60°F to +351°F) |
| Storage Temperature |
-51°C to +177°C (-60°F to +351°F) |
| Shipping Weight |
1.5 kg |
Performance Characteristics
The 330930-040-00-CN delivers precise signal integrity with a center conductor DC resistance of 0.220 Ω/m (0.067 Ω/ft) and shield resistance of 0.066 Ω/m (0.020 Ω/ft). Its capacitance is 69.9 pF/m (21.3 pF/ft) typical, ensuring minimal signal distortion. The linear range spans 1.5 mm (60 mils), starting at approximately 0.25 mm (10 mils) from the target, with a recommended gap setting of 1.0 mm (40 mils).
Field Wiring & Integration
For field wiring, the 330930-040-00-CN supports conductor sizes from 0.2 to 1.5 mm² (16 to 24 AWG), with ferrules recommended for 0.25 to 0.75 mm² (18 to 23 AWG). Use a three-conductor shielded triad cable, keeping the maximum length between the 3300 XL NSv Proximitor Sensor and the monitor at 305 meters (1,000 feet). Refer to frequency response graphs for signal rolloff at high frequencies when using longer wiring runs.
Installation Guidance
Ensure the extension cable length and probe length, when added together, equal the Proximitor Sensor total length. The cable features gold-plated brass connectors for secure, corrosion-resistant connections. The optional stainless steel armor (AISI 302 SST) provides additional mechanical protection, with a maximum tensile strength of 220 N (50 lb) at critical connection points.
Applications
This Bently Nevada 330930-040-00-CN extension cable is ideal for turbomachinery, pumps, compressors, and other rotating equipment where precise shaft vibration and position monitoring are critical. Its wide temperature range and robust construction make it suitable for harsh industrial environments, from cold outdoor installations to high-heat process areas.
Maintenance & Reliability
Regularly inspect the cable for physical damage, especially at connector junctions. The FEP insulation resists moisture and chemicals, but verify the cable routing to avoid abrasion or sharp bends. With proper care, the 330930-040-00-CN provides long-term, maintenance-free operation, reducing downtime and total cost of ownership.
Buying Guide
Before purchasing, confirm your system's probe and Proximitor Sensor length requirements to ensure the 330930-040-00-CN matches your setup. Verify the connector type and whether you need the optional armor. PLC Source PRO offers genuine Bently Nevada components with fast shipping and expert support. For assistance, contact our sales team to confirm compatibility with your existing 3300 XL NSv system.