The Bently Nevada 330130-085-00-00 serves as the primary 330130 Extension Cable utilized to execute RF signal transmission across 3300 XL Transducer System platforms. This passive electrical component establishes the low-attenuation path required to bridge an 8 mm proximity probe tip with a processing Proximitor sensor, running high-frequency analog signals without modifying structural loop capacitance boundaries.
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 without connector protectors
- -00 - Agency Approval Option: Not required
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330130-085-00-00 |
| Brand | Bently Nevada |
| Origin | United States |
| Weight | 0.289 kg net mass (2.0 kg gross shipping weight rating) |
| Dimensions | 8.5 m nominal cable length; 3.68 mm maximum outside diameter |
| Operating Temp | -51 to +177 deg C |
| Power Consumption | 0.0 W (Passive hardware line) |
| Nominal Impedance | 75 ohm coaxial geometry |
| Capacitance | 69.9 pF/m nominal matching electrical value |
| Transducer Compatibility | 3300 XL 8 mm proximity probe and sensor networks |
Eddy-Current Probe Scaling & Cross-Talk Suppression
The internal 75 ohm coaxial architecture of the 330130-085-00-00 extension cable provides precise electrical matching parameters optimized for factory eddy-current probe scaling. The uniform internal capacitance profile prevents signal attenuation across the 8.5 metres segment, securing optimal cross-talk suppression when routed alongside adjacent instrumentation wiring. This controlled signal transmission allows stable gap voltage validation targeting nominal -10 VDC baselines, guaranteeing clean data conversion for monitoring dynamic rotor dynamics.
Frequently Asked Questions
Q: Why is maintaining the exact 8.5 metres physical length necessary for this circuit configuration?
A: The paired Proximitor sensor is calibrated to drive a fixed total electrical length (such as a 9.0 metres total system loop). Shortening or lengthening the cable alters circuit capacitance, shifts the scale factor calibration, and corrupts displacement metrics.
Q: Does the standard cable layout under option -00 provide protection against environmental fluid migration?
A: Option -00 specifies a standard coaxial jacket structure without fluid barriers or mechanical armoring. For conditions involving liquid submersions or high moisture levels, FluidLoc modified options must be designated.
Field Installation Guidelines
- Verify that this 8.5 metres extension cable is combined strictly with a 0.5 metre proximity probe to satisfy the 9.0 metres total system parameter required by the matched Proximitor sensor.
- Do not subject the coaxial run to tight physical routings that fall below the minimum static bend radius threshold of 25.4 mm to prevent shifting internal dielectric spacing.
- Apply appropriate insulation tape or external shielding boots over the miniature coaxial connections since this version excludes integrated mechanical connector protectors.
- Install the low-voltage analog cable inside distinct, grounded metal conduit paths isolated from parallel high-power AC distribution lines to minimize signal interference.
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