Bently Nevada 33104-00-10-10-02-05 Extension Cable – 3300 XL Series

Bently Nevada 33104-00-10-10-02-05: 5-Meter Coaxial Extension Cable for 3300 XL Proximity Transducer Systems

The Bently Nevada 33104-00-10-10-02-05 is a 5-meter shielded coaxial extension cable engineered as the signal-transmission backbone between a proximity probe and its paired proximitor/driver within the 3300 XL and 3300 NSv transducer system architecture. In eddy-current proximity measurement, the extension cable is not a passive conductor — it is a calibrated impedance element whose electrical length, dielectric constant, and shielding continuity are factored directly into the proximitor’s gap-voltage transfer function. Any deviation in cable impedance, jacket dielectric, or connector contact resistance shifts the static characterization curve and introduces a systematic measurement offset that cannot be corrected in software without full system recalibration. This part number encodes a specific 5-meter length, standard jacket configuration, and MIL-spec connector termination, making it a non-interchangeable component within a calibrated probe-cable-proximitor assembly.

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Technical Parameters

Hardware Logical Analysis

The 33104-00-10-10-02-05 operates within a three-element eddy-current measurement chain: proximity probe → extension cable → proximitor sensor. The proximitor drives the probe coil at a fixed oscillation frequency (typically 1.0 MHz for 8 mm probes, 500 kHz for 11 mm probes). The extension cable’s distributed capacitance and inductance form part of the resonant tank circuit. Bently Nevada calibrates each probe-cable-proximitor combination as a matched set, meaning the 5-meter electrical length of this cable is embedded in the proximitor’s internal compensation algorithm.

EMC and Shielding Architecture: The double-shield construction — inner foil plus outer braided shield — provides two distinct shielding layers. The foil layer achieves near-100% coverage against high-frequency radiated interference (RF, switching transients from VFDs), while the braided outer shield provides low-impedance ground continuity and mechanical protection. Both shields are terminated at the connector shell, creating a Faraday enclosure around the signal conductor. In environments with high electromagnetic interference from large motor drives or arc furnaces, this dual-shield topology suppresses common-mode noise injection that would otherwise appear as false vibration amplitude modulation in the monitoring system.

PTFE Dielectric Stability: PTFE’s dielectric constant (εr ≈ 2.1) is among the most thermally stable of any cable insulation material, varying less than 0.5% across the full operating temperature range of -40 °C to +125 °C. This stability is critical because any shift in dielectric constant alters the cable’s distributed capacitance, which in turn shifts the proximitor’s gap-voltage output curve. In steam turbine bearing housings where cable surface temperatures can reach 90–110 °C during sustained operation, PTFE-insulated cables maintain calibration accuracy where PVC or PE alternatives would introduce thermal drift errors of several millivolts per degree.

Connector Contact Resistance: The MIL-C-5015 style connectors are specified with a maximum contact resistance of 5 mΩ per pin at initial mating, with a degradation limit of 10 mΩ after 500 mating cycles. Contact resistance above this threshold introduces a resistive voltage drop in the DC bias circuit that the proximitor interprets as a gap change. The gold-plated contacts on this cable maintain low contact resistance in humid and mildly corrosive environments without requiring periodic cleaning under normal service conditions.

System Integration Benefits

• Calibration traceability: The 5-meter length is factory-matched to Bently Nevada proximitor calibration data, ensuring the gap-voltage output curve meets the ±0.5% linearity specification across the full measurement range without field recalibration.
• API 670 compliance retention: Using the OEM extension cable preserves the machinery protection system’s compliance with API Standard 670 (5th Edition), which mandates matched probe-cable-proximitor assemblies for certified installations in critical rotating equipment.
• SIL loop integrity: In Safety Instrumented Systems where the vibration channel contributes to a SIL 2 or SIL 3 safety function, substituting a non-OEM cable invalidates the PFD (Probability of Failure on Demand) calculation documented in the SIL assessment. The OEM cable maintains the validated failure mode data.
• Plug-and-play replacement: Identical connector geometry and cable OD allow direct field replacement without conduit rework, junction box modification, or re-routing — minimizing planned outage duration during maintenance windows.
• Thermal derating margin: The 125 °C jacket rating provides a 15–35 °C thermal margin above typical bearing housing surface temperatures in gas turbine and steam turbine applications, preventing jacket softening and insulation compression under cable clamps.
• Vibration fatigue resistance: The stranded silver-plated conductor and flexible PTFE dielectric are specified for continuous dynamic flexing at the cable entry points of rotating machinery housings, where vibration-induced fatigue fractures are the primary failure mode of rigid-conductor alternatives.
• Diagnostic transparency: The 3500 Series monitoring system performs continuous cable health diagnostics by monitoring the proximitor’s OK output. A degraded extension cable (increased contact resistance, partial shield break) produces a predictable shift in the OK threshold voltage, enabling condition-based cable replacement before measurement failure occurs.
• Multi-system compatibility: The 33104-00-10-10-02-05 is compatible with 3300 XL 8 mm probes, 3300 XL 11 mm probes, 3300 NSv probes, and their respective proximitor sensors, as well as the 3500 Series rack-based monitoring system — covering the majority of installed Bently Nevada machinery protection infrastructure worldwide.

Quality Assurance & Global Logistics

Every unit of the Bently Nevada 33104-00-10-10-02-05 supplied through siemensplc.com is sourced from authorized Bently Nevada (Baker Hughes) distribution channels. Each cable undergoes a pre-shipment inspection protocol covering connector pin continuity, shield integrity (DC resistance ≤ 0.5 Ω end-to-end), jacket visual inspection for cuts or compression damage, and part number label verification against the order. A certificate of conformance, manufacturer datasheet, and packing list are included with every shipment.

Our warehouse in Xiamen, China maintains climate-controlled storage at 15–25 °C and 40–60% RH to prevent connector contact oxidation and PTFE jacket cold-flow deformation during long-term storage. Anti-counterfeit verification is performed on every batch: original manufacturer labeling, batch codes, and connector markings are cross-referenced against Bently Nevada’s authorized part documentation. No gray-market, refurbished, or re-labeled stock is accepted.

Logistics from Xiamen reach major industrial hubs with the following typical transit times: Southeast Asia 2–4 days, Middle East 3–5 days, Europe 5–7 days, North America 5–8 days. DHL Express, FedEx International Priority, and UPS Worldwide Express are available for time-critical plant shutdown support. Export documentation including commercial invoice, packing list, and certificate of origin is prepared for all international shipments. HS Code 8544.42 applies to this product for customs classification in most jurisdictions.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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