Product Overview
The Bently Nevada 330930-040-00-00 is a 3300 NSv Extension Cable engineered for precision vibration monitoring in industrial rotating machinery. This 4.0-meter (13.1 feet) cable connects a 3300 NSv Proximitor Sensor to the probe, maintaining signal integrity over long distances. With a 75 Ω coaxial, fluoroethylene propylene (FEP) insulated construction, it delivers consistent performance in demanding environments.
Designed as a critical link in the 3300 NSv system, the 330930-040-00-00 ensures accurate measurement of shaft vibration and position. Its robust design withstands extreme temperatures from -51°C to +177°C, making it suitable for harsh industrial settings.
Technical Specifications
The following specifications are directly from the manufacturer and define the operational characteristics of the 330930-040-00-00:
| Parameter |
Value |
| Product Type |
3300 NSv Extension Cable |
| Cable Length |
4.0 meters (13.1 feet) |
| Connector Option |
Without stainless steel armor |
| Agency Approval |
Not Required |
| Extension Cable Material |
75 Ω coaxial, fluoroethylene propylene (FEP) insulated |
| Operating and Storage Temperature |
-51°C to +177°C (-60°F to +351°F) |
| Shipping Weight |
1.5 kg |
Key electrical characteristics include:
- DC resistance: Center conductor 0.220 Ω/m (0.067 Ω/ft); Shield 0.066 Ω/m (0.020 Ω/ft)
- Capacitance: 69.9 pF/m (21.3 pF/ft) typical
- Linear range: 1.5 mm (60 mils), from 0.25 to 1.75 mm (10 to 70 mils)
- Recommended gap setting: 1.0 mm (40 mils)
- Connector material: Gold-plated brass
- Tensile strength (max rated): 220 N (50 lb) at all connection points
Industry Applications
The 330930-040-00-00 extension cable is essential in industries where machinery reliability is paramount. Typical applications include:
-
Power Generation: Monitoring turbine shaft vibration to prevent catastrophic failure and unplanned outages.
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Oil & Gas: Ensuring compressor and pump health in refineries and processing plants, reducing downtime risks.
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Manufacturing: Maintaining quality control on high-speed rotating equipment such as motors and gearboxes.
In each scenario, the 330930-040-00-00 delivers stable signal transmission, enabling accurate condition monitoring that supports predictive maintenance strategies.
Installation & Setup Guidance
Proper installation ensures optimal performance. Follow these guidelines:
- Verify the combined length of the extension cable and probe equals the Proximitor Sensor total length. For example, with a 4.0-meter extension cable, select a probe length that sums correctly.
- Route the cable away from high-voltage lines and sharp bends to avoid signal degradation.
- Use the recommended field wiring: 0.2 to 1.5 mm² (16 to 24 AWG) or 0.25 to 0.75 mm² (18 to 23 AWG) with ferrules. A three-conductor shielded triad cable is recommended, with a maximum length of 305 meters (1,000 feet) to the monitor.
- Ensure connectors are clean and securely tightened to maintain low resistance.
Maintenance & Reliability
Regular inspection of the extension cable is key to long-term reliability. Check connectors for corrosion or wear, and verify the cable jacket for cuts or abrasion. The FEP insulation resists chemicals and high temperatures, but physical damage can compromise performance. Replacing a worn 330930-040-00-00 proactively prevents false readings and avoids costly machine downtime.
Selection Guide & Purchasing Advice
When ordering a replacement or new installation, confirm the cable length option (040 = 4.0 meters) and connector options match your system requirements. The 330930-040-00-00 is available without stainless steel armor; if armored protection is needed, select the appropriate variant. For expert guidance and genuine parts, PLC Source PRO offers reliable sourcing and fast delivery to keep your operations running.