Configured for RF signal transmission in 3300 XL Transducer System networks, the Bently Nevada 330130-085-00-CN (330130 Extension Cable) provides direct physical/electrical execution. This passive analog component acts as a calibrated connection interface between a proximity probe and a Proximitor sensor, transferring high-frequency displacement information while adhering to exact loop capacitance limits.
Suffix Breakdown & Model Matrix
- 330130 - Base Model: 3300 XL Standard Extension Cable
- -085 - Cable Length Option: 8.5 metres (27.9 feet)
- -00 - Connector Protector and Cable Option: Standard cable assembly
- -CN - Agency Approval Option: ATEX/IECEx and Chinese NEPSI hazardous area marking
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330130-085-00-05 |
| Brand | Bently Nevada |
| Origin | United States |
| Weight | 0.29 kg nominal net mass |
| Dimensions | 8.5 m nominal cable length; 3.70 mm maximum outside diameter |
| Operating Temp | -51 to +177 deg C |
| Power Consumption | 0.0 W (Passive structural loop) |
| Nominal Impedance | 75 ohm coaxial topology |
| Electrical Capacitance | 69.9 pF/m nominal capacitance profile |
| Certifications | ATEX, IECEx, and NEPSI hazardous area approvals |
Eddy-Current Probe Scaling & Gap Voltage Validation
The internal 75 ohm impedance layout of the 330130-085-00-CN extension cable yields uniform electrical matching conditions necessary for accurate factory eddy-current probe scaling. This precise calibration prevents degradation of high-frequency signal waveforms across the 8.5 metres line length, ensuring optimal cross-talk suppression inside high-density wire bundles. This baseline stability enables accurate gap voltage validation targeting nominal -10 VDC levels, providing consistent sensor parameters for evaluating dynamic rotor dynamics.
Frequently Asked Questions
Q: What specific field constraints govern the 8.5 metres fixed physical length of this cable?
A: The Proximitor sensor relies on a strict total system electrical length calibration (typically 9.0 meters total). Modifying the extension cable length introduces loop capacitance errors, shifts the linear scale factor, and introduces measurement deviations.
Q: Does the -00 suffix option feature protection against mechanical abrasion or fluid ingress?
A: Option -00 specifies a standard unarmored coaxial structure without external stainless steel shielding or connector protectors. It must be installed inside sealed protective conduit lines when deployed in areas with continuous fluid exposure or mechanical risk.
Field Installation Guidelines
- Pair this 8.5 metres extension cable only with a 0.5 metre proximity probe to maintain the overall 9.0 meters physical loop system length required by the sensor architecture.
- Maintain a minimum static installation bend radius limit of 25.4 mm along the routing track to avoid changing the spacing between the inner conductor and outer shield.
- Apply external environmental seals or junction enclosures over the miniature coaxial connections because this version lacks built-in mechanical connector protectors.
- Track the coaxial cable through separate, isolated metal conduits located away from high-power AC power cables to prevent electromagnetic noise coupling.
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Engineering Lead, GermanyTop-tier Service and Quality
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Operations Director, GermanyRelated Products
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