The Bently Nevada 330930-040-01-00, also cataloged as the 3300 XL Standard Extension Cable, operates as a dedicated hardware component for high-frequency signal transmission between proximity probes and Proximitor sensors within 3300 XL Transducer System networks.
Suffix Breakdown & Model Matrix
The part number sequence defines the physical length, protective armoring layer, and agency certification options for the extension cable assembly:
- 330930: Base Model for 3300 XL Standard Extension Cable
- 040: Cable Length Option - 4.0 meters (13.1 feet)
- 01: Connector and Cable Option - With stainless steel armor and FEP jacket
- 00: Agency Approval Option - Not required
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330930-040-01-00 |
| Brand | Bently Nevada |
| Origin | USA |
| Weight | 0.15 kg (Net), 1.5 kg (Shipping) |
| Dimensions | 4.0 meters (13.1 feet) length |
| Operating Temp | -51 to 177 deg C (-60 to 350 deg F) |
| Power Consumption | Passive physical conductor (zero power dissipation) |
| Cable Construction | Coaxial cable with flexible stainless steel armor and outer FEP jacket |
| Connector Type | ClickLoc miniature coaxial connectors |
| Stainless Steel Armor | Option 01 (With stainless steel armor, with FEP jacket) |
| Agency Approval | Option 00 (Not required) |
Rotor Dynamics & Gap Voltage Validation
The 3300 XL extension cable transmits raw high-frequency radio-frequency signals between the eddy-current probe and the Proximitor sensor while maintaining matched loop capacitance. Precise physical length matching (4.0 meters extension cable paired with a 1.0 meter probe cable) ensures accurate eddy-current probe scaling across the transducer system for rotor dynamics monitoring. Field commissioning requires verifying physical probe clearance through gap voltage validation, confirming that the Proximitor voltage output reads a baseline target of -10 VDC under non-rotating shaft conditions.
Frequently Asked Questions
Q: What protection does the option 01 cable construction provide over the standard cable?
A: Option 01 adds flexible stainless steel armor and an outer Fluorinated Ethylene Propylene (FEP) jacket, providing mechanical crush resistance and fluid protection in aggressive industrial environments.
Q: Can the 3300 XL extension cable be cut or spliced in the field to adjust length?
A: No. Splicing or cutting the coaxial extension cable alters total loop capacitance and impedance, which permanently degrades linear calibration and measurement accuracy.
Field Installation Guidelines
- Routing and Physical Protection: Route the armored extension cable through instrument trays, maintaining a clean physical separation from high-voltage AC motor power leads to avoid electro-magnetic noise coupling.
- Bend Radius Limit: Maintain recommended minimum bend radius constraints along the run to prevent kink deformation of the internal coaxial dielectric structure and stainless steel armor.
- Connector Mating: Inspect ClickLoc miniature coaxial connectors for contamination prior to connection. Push and turn until positive mechanical locking is engaged.
- Shield Isolation: Verify overall shield integrity and ground the cable shielding system exclusively at the monitor panel terminal block to prevent ground loop currents.
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