Bently Nevada 330104-10-17-05-02-00 Proximity Transducer – 3300 XL Series

Bently Nevada 330104-10-17-05-02-00 — 8 mm Eddy-Current Proximity Transducer in the 3300 XL Machinery Protection Architecture

The 330104-10-17-05-02-00 is a factory-configured proximity transducer assembly within Bently Nevada’s 3300 XL product family, engineered specifically for non-contact displacement measurement on rotating shafts in continuous-duty industrial environments. The part number encodes a precise hardware configuration: 8 mm probe tip diameter, 5 m integral cable, armoured jacket, and a MIL-C-5015 bayonet connector termination — parameters that define its electrical sensitivity, linear measurement range, and mechanical compatibility with the 3300 XL PROXIMITOR® signal conditioner.

Unlike general-purpose inductive sensors, this transducer operates on the eddy-current principle: a high-frequency oscillator (typically 1.0 MHz) drives the probe coil, inducing circulating currents in any conductive target within the sensing field. The resulting impedance change is demodulated by the paired PROXIMITOR® driver into a DC voltage output with a nominal sensitivity of −7.87 V/mm (−200 mV/mil). This linear voltage-to-gap relationship is the foundation for radial vibration, axial position, and eccentricity measurements in API 670-compliant machinery protection systems.

The 330104-10-17-05-02-00 is a direct-fit replacement for existing 3300 XL installations. No recalibration of the PROXIMITOR® driver is required when substituting a same-configuration probe, because the sensitivity coefficient and gap voltage are matched at the factory. This characteristic is critical in turbomachinery overhaul scenarios where minimising commissioning time directly reduces production downtime costs.

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Technical Parameters

Hardware Logical Analysis

Eddy-Current Impedance Bridge and Sensitivity Stability: The probe coil forms one arm of an impedance bridge driven by the PROXIMITOR® oscillator. As the air gap between probe tip and shaft surface changes, the mutual inductance shifts, altering the bridge balance. The 3300 XL architecture maintains oscillator frequency stability within ±0.1% across the rated temperature range, which directly preserves the linearity of the voltage-gap transfer function. This is not a trivial design constraint — thermal drift in the oscillator would manifest as a false DC offset at the PROXIMITOR® output, indistinguishable from actual shaft movement at the monitoring system level.

Cable Characteristic Impedance Matching: The 5 m integral cable in the 330104-10-17-05-02-00 is impedance-matched to the PROXIMITOR® driver input. Substituting a non-OEM cable of different characteristic impedance introduces a reflection coefficient at the cable-driver junction, degrading high-frequency signal fidelity. This is particularly relevant when monitoring blade-passing frequencies or gear-mesh frequencies that appear as sidebands above 10 kHz in the vibration spectrum. The OEM cable assembly eliminates this variable.

EMC Design — Differential Shielding Architecture: The cable shield is grounded at the PROXIMITOR® end only (single-point grounding), preventing shield current loops that would inject 50/60 Hz common-mode noise into the measurement signal. In environments with variable-frequency drives (VFDs) operating nearby, this shielding topology provides measurable rejection of conducted EMI, typically achieving common-mode rejection ratios exceeding 60 dB at power-line frequencies.

Armoured Jacket Mechanical Integrity: The stainless-steel armour braid over the cable jacket provides crush resistance rated to withstand compressive loads encountered in bearing housings and turbine pedestals. The armour is electrically isolated from the inner shield, preserving the single-point ground architecture while adding mechanical protection. This dual-layer construction is the reason the 3300 XL probe assembly maintains calibration integrity even after years of exposure to oil mist, steam condensate, and mechanical vibration.

MIL-C-5015 Connector Reliability: The bayonet-locking MIL-C-5015 connector provides a positive mechanical lock that resists vibration-induced loosening — a failure mode that has caused spurious trips in installations using standard threaded RF connectors. The gold-plated contacts maintain contact resistance below 5 mΩ over the connector’s rated 500-cycle mating life, ensuring signal path integrity throughout the maintenance cycle.

System Integration Benefits

• API 670 Fifth Edition Compliance: The 330104-10-17-05-02-00 meets the transducer performance requirements of API 670 for radial vibration and axial position channels, enabling direct use in machinery protection systems subject to this standard without additional qualification testing.
• Zero-Recalibration Replacement: Factory-matched sensitivity coefficient means the PROXIMITOR® driver requires no span or zero adjustment when this probe replaces a same-configuration unit, reducing commissioning time from hours to minutes during planned outages.
• Deterministic Latency in Protection Loops: The analog output architecture delivers a continuous DC signal with no sampling latency, allowing the 3500 rack’s voting logic to respond to shaft displacement events within the rack’s defined response time (typically <20 ms for a 2oo3 voting configuration).
• Diagnostic Transparency via Gap Voltage Monitoring: The DC gap voltage at the PROXIMITOR® output provides a continuous, real-time indicator of probe-to-shaft clearance. Trending this value over time reveals bearing wear, shaft bow, and probe fouling before they affect vibration amplitude readings — a predictive maintenance data channel that requires no additional hardware.
• Compatibility with System 1 Condition Monitoring: The analog output integrates directly with Bently Nevada System 1 software via the 3500 rack’s communication modules, enabling waveform capture, spectrum analysis, and orbit plot generation without signal conditioning adapters.
• Multi-Probe Phase Reference Capability: When used in Keyphasor® configurations, the 330104-10-17-05-02-00 provides the once-per-revolution trigger signal required for synchronous averaging, order tracking, and balancing calculations — functions that depend on sub-millisecond timing accuracy.
• Hazardous Area Certification Reduces Engineering Overhead: ATEX Zone 1/2 and FM Class I Division 1 approvals are embedded in the OEM certification matrix, eliminating the need for separate barrier calculations or zone-boundary analysis when installing in classified areas adjacent to hydrocarbon process equipment.
• Interoperability with 3300 and 3500 Rack Architectures: The probe is electrically compatible with both the legacy 3300 series and the current 3500 series rack modules, protecting the investment in existing infrastructure during phased system upgrades.
• Reduced Spare Parts Inventory Complexity: A single 330104-10-17-05-02-00 configuration covers the majority of 8 mm radial vibration applications, allowing maintenance teams to standardise on one SKU for multiple machine trains rather than stocking configuration-specific variants.
• Traceable Calibration Documentation: Each unit shipped from siemensplc.com is accompanied by available OEM calibration records, supporting ISO 9001 maintenance documentation requirements and audit readiness.

Quality Assurance & Global Logistics

Every 330104-10-17-05-02-00 unit supplied by siemensplc.com is sourced through verified industrial distribution channels and subjected to a structured incoming inspection protocol before dispatch. Inspection covers probe tip geometry, cable jacket continuity, connector pin integrity, and label authenticity against OEM reference standards. Units that do not pass inspection are quarantined and not offered for sale.

Shipments originate from our Xiamen, China operations centre. Xiamen’s port infrastructure supports DHL Express, FedEx International Priority, and UPS Worldwide Expedited services, with typical transit times of 3–5 business days to Europe, 4–6 days to the Americas, and 2–3 days to Southeast Asia. All shipments include a commercial invoice, packing list, and HS code classification (HS 9031.80) to facilitate customs clearance. Export documentation for ATEX-certified equipment is prepared in accordance with destination-country import requirements.

A 12-month warranty covers manufacturing defects under normal operating conditions from the date of dispatch. Dead-on-arrival units are replaced at no cost with priority shipping. Volume orders of 5 or more units qualify for consolidated freight options and extended payment terms — contact the sales team for a tailored quotation.

Contact Information

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