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The Bently Nevada 330130-080-01-05, also cataloged as the 330130 Armoured Extension Cable, operates as a dedicated hardware component for RF signal transmission within 3300 XL Transducer System networks. It acts as the protective, low-attenuation electrical path linking an 8.0 mm proximity probe to a remote processing Proximitor sensor, enabling high-frequency eddy-current displacement execution without altering the fixed loop impedance parameters.

Suffix Breakdown & Model Matrix

  • 330130 - Base Model: 3300 XL Standard Extension Cable
  • -080 - Cable Length Option: 8.0 metres (26.2 feet)
  • -01 - Connector Protector and Cable Option: Armoured Cable
  • -05 - Agency Approval Option: Multiple Approvals

Hardware Specifications

Parameter Specification
Model 330130-080-01-05
Brand Bently Nevada
Origin United States
Weight 0.045 kg (base core cable rating nominal weight)
Dimensions 8.0 m nominal cable length; 7.67 mm armor outside diameter; 9.5 mm armor ferrule maximum diameter
Operating Temp -52 to +177 deg C (cable jacket rating); -35 to +200 deg C (extended storage envelope)
Power Consumption 0.0 W (Passive structural loop component)
Core Coaxial Cable 75 ohm nominal matching impedance; 3.68 mm maximum outside diameter
Terminal Field Wiring Accepts 16 to 24 AWG (0.2 to 1.5 mm2) tinned shield triad configurations
Maximum Extension Distance 305 m (1000 feet) maximum field wiring limit between Proximitor sensor and monitor module

Eddy-Current Probe Scaling & Gap Voltage Validation

The internal 75 ohm coaxial core of the 330130-080-01-05 extension cable is physically calibrated to ensure that cumulative system capacitance matches the tuned criteria of the 3300 XL platform. This precision is required to stabilize eddy-current probe scaling for target 8.0 mm tip assemblies. Preserving electrical length uniformity prevents high-frequency rolloff and signal attenuation across the 8.0 m line, enabling exact gap voltage validation targeting standard -10 VDC operational baselines for machinery rotor dynamics monitoring.

Frequently Asked Questions

Q: Why must the combined electrical length of the proximity probe and extension cable remain constant?

A: The Proximitor sensor is factory-calibrated to drive an exact total circuit length (such as 5.0 m or 9.0 m loops). Introducing a mismatched cable configuration changes the total capacitance, which shifts the linear scale factor and corrupts physical gap voltage tracking.

Q: How do long field wiring runs between the Proximitor sensor and monitor affect high-frequency outputs?

A: While the 330130-080-01-05 interfaces directly with the probe, the subsequent field lines extending to the monitor panel are capped at 305 m. Exceeding this distance creates electrical signal rolloff at high frequencies due to line capacitance.

Field Installation Guidelines

  • Verify that the 8.0 m extension cable is matched with a compatible 1.0 m proximity probe to ensure the combined electrical lengths equal the 9.0 m system specification.
  • Avoid applying physical forces that exceed the minimum installation bend radius of 25.4 mm on the internal coaxial element to prevent core dielectric shifting.
  • Use 3-conductor shielded triad cables and tinned field wire for all extended terminal interconnections running from the Proximitor enclosure to the monitor rack.
  • Ensure the flexible stainless steel armor jacket is grounded at the housing boundary to maintain optimal cross-talk suppression and isolate miniature male coaxial connectors from structural frameworks.

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