The Bently Nevada 330930-065-00-CN, also cataloged as the 330930 Extension Cable, operates as a dedicated hardware component for high-frequency signal routing within 3300 NSv Proximity Transducer Systems. It connects proximity probes to Proximitor sensors, transferring high-frequency radio frequency (RF) signals across machinery protection networks.
Suffix Breakdown & Model Matrix
| Option Code | Designation | Parameter Value / Option Description |
|---|---|---|
| 330930 | Base Model | 3300 NSv Extension Cable |
| -065 | Cable Length Option | 6.5 meters (21.3 feet) |
| -00 | Connector & Cable Option | Without stainless steel armor |
| -CN | Agency Approval Option | Country-specific approvals (Regional compliance) |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330930-065-00-CN |
| Base Model | 330930 |
| Brand | Bently Nevada |
| Series | 3300 NSv |
| Product Type | Proximity Extension Cables |
| Origin | USA |
| Cable Length | 6.5 meters (21.3 feet) |
| Armor / Jacket Option | Unarmored (Without stainless steel armor), FEP insulated |
| Cable Material | 75 ohm coaxial cable, fluoroethylene propylene (FEP) insulation |
| Agency Approval Option | Country-specific (CN option) |
| Operating & Storage Temp | -51 to +177 deg C (-60 to +351 deg F) |
| Power Consumption | Passive hardware component (0 W) |
| Weight / Shipping Weight | 1.5 kg (Shipping Weight) |
Eddy-Current Probe Scaling & Rotor Dynamics Validation
The 330930-065-00-CN extension cable maintains precise 75 ohm coaxial impedance characteristics across its FEP-insulated conductor assembly to prevent signal reflection during high-frequency vibration monitoring. Strict physical length calibration guarantees accurate eddy-current probe scaling, ensuring the linear transfer scale factor remains true to system design targets. Maintaining line impedance integrity enables precise gap voltage validation targeting -10 VDC at center-gap baseline conditions, supporting cross-talk suppression and accurate dynamic voltage readings required for rotor dynamics analysis.
Frequently Asked Questions
Q: What is the purpose of matching total system length when installing the 330930 extension cable?
A: The 3300 NSv Proximitor Sensor is factory-calibrated to a specific total system length (such as 5.0 meters or 7.0 meters). The combined physical length of the proximity probe and the 6.5-meter extension cable must match the target Proximitor calibration to maintain system accuracy and prevent baseline voltage shifts.
Q: What operating temperature limits apply to the FEP coaxial insulation material?
A: The fluoroethylene propylene (FEP) cable insulation supports continuous operation and storage across an environmental temperature range of -51 to +177 deg C (-60 to +351 deg F).
Q: How does the unarmored connector option (-00) affect field installation practices?
A: Because option -00 omits the protective flexible stainless steel armor, the cable must be routed inside protective conduit or cable trays to guard against mechanical pinch points, sharp bends, and physical impact.
Field Installation Guidelines
- Inspect the male and female miniature coaxial connectors for dirt, oil, or pin damage before mating. Clean connectors with clean dry air or contact cleaner if required.
- Thread the coaxial connectors together until finger-tight. Apply the recommended torque using specialized connector tools, ensuring not to over-tighten or twist the coaxial cable assembly.
- Install molded connector protectors or insulating boots over the mated connection to isolate the coaxial shield from accidental panel or conduit contact, preventing ground loops.
- Route the unarmored cable through rigid or flexible protective conduit, maintaining a minimum bend radius of 25 mm (1.0 inch) to protect the internal 75 ohm coaxial geometry.
- Secure the cable with non-crushing cable clamps along terminal enclosures, ensuring the outer FEP jacket is not pinched or abraded by sharp metal edges.
What's clients say about us
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Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
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Engineering Lead, GermanyTop-tier Service and Quality
We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.
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