Bently Nevada 330103-00-19-50-02-CN Proximity Transducer System – 3300 XL

Bently Nevada 330103-00-19-50-02-CN: 8 mm Eddy-Current Proximity Transducer System for Continuous Shaft Displacement Monitoring

The Bently Nevada 330103-00-19-50-02-CN is a factory-matched, three-component proximity transducer system comprising an 8 mm eddy-current probe, a 0.5 m integral armored cable, and a 5.0 m extension cable terminated with a MIL-C-5015 CN-style 2-pin connector. It operates as the front-end sensing element within the Bently Nevada 3300 XL Proximitor System — the platform that defines the measurement baseline for API 670-compliant machinery protection installations worldwide.

In rotating machinery protection, the transducer system is the first link in the signal chain. Any non-linearity, thermal drift, or impedance mismatch at this stage propagates directly into the monitor’s alarm logic. The 330103-00-19-50-02-CN addresses this by delivering a calibrated, matched-impedance signal path from probe tip to Proximitor driver input, with a documented scale factor of 7.87 V/mm (200 mV/mil) and a flat frequency response from DC to 10,000 Hz — sufficient to resolve both quasi-static axial position and high-frequency sub-synchronous instability events in high-speed turbomachinery.

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Technical Parameters

Hardware Logical Analysis

The 330103-00-19-50-02-CN operates on the principle of high-frequency eddy-current induction. The probe coil, driven by the Proximitor oscillator at approximately 1.0 MHz, generates an alternating electromagnetic field. As a conductive target surface enters this field, induced eddy currents load the coil, reducing its Q-factor and shifting the oscillator’s output amplitude. The Proximitor converts this amplitude change into a DC-proportional voltage output — the gap voltage — at the calibrated scale factor of 7.87 V/mm.

Matched-System Impedance Architecture: The 330103 probe, extension cable, and Proximitor driver are factory-characterized as a matched set. The extension cable’s distributed capacitance and the probe coil’s inductance are compensated within the Proximitor’s oscillator circuit. Substituting non-matched cables or probes introduces impedance discontinuities that shift the effective scale factor by up to ±8%, invalidating alarm setpoints without triggering any self-diagnostic fault — a failure mode that matched-system architecture eliminates by design.

EMC Design: The integral armored cable uses a double-shielded construction (inner braid + outer foil) with drain wire, providing greater than 60 dB of common-mode rejection against radiated interference from variable-frequency drives, high-current bus bars, and RF sources common in industrial environments. The MIL-C-5015 CN connector’s metal shell provides 360° circumferential bonding to the cable shield, eliminating the shield discontinuity that occurs with standard industrial connectors.

Thermal Stability: The probe coil is wound on a ceramic bobbin with a low thermal coefficient of expansion, limiting scale factor drift to less than ±0.5% across the full –35°C to +177°C probe operating range. This is critical for hot-section installations near bearing housings on gas turbines, where ambient temperatures can exceed 150°C during sustained full-load operation.

Part Number Decoding: 330103 = 8 mm probe body; -00 = standard configuration; -19 = 0.5 m (19-inch) integral probe cable; -50 = 5.0 m extension cable; -02 = 2-pin connector; -CN = MIL-C-5015 CN-style termination. This encoding allows direct verification of physical configuration against installation drawings without opening the terminal box.

System Integration Benefits

• API 670 Fifth Edition Compliance: The 330103-00-19-50-02-CN meets all transducer system requirements of API 670, including scale factor tolerance, frequency response, and temperature range — satisfying the mandatory specification for new machinery protection systems in oil & gas and power generation facilities.
• Direct 3500 Series Monitor Compatibility: Interfaces directly with Bently Nevada 3500/42M Proximitor/Seismic Monitor and 3500/40M Proximitor Monitor without signal conditioning adapters, preserving the calibrated signal chain from probe to rack.
• Backward Compatibility with 3300 Series: Electrically and mechanically compatible with legacy 3300/16 Dual Vibration Monitors, enabling drop-in replacement in existing installations without rack modifications or recalibration of monitor alarm setpoints.
• Deterministic Frequency Response to 10 kHz: The flat ±3 dB bandwidth to 10,000 Hz captures sub-synchronous instability (oil whirl, oil whip), synchronous 1X vibration, and super-synchronous harmonics up to the 10th order on a 60,000 RPM machine — all within a single transducer system without range switching.
• DCS and Safety System Integration: The –1 VDC to –17 VDC output is directly compatible with Bently Nevada 3500 series I/O modules that provide 4–20 mA retransmission to DeltaV, Ovation, ABB 800xA, Honeywell Experion, and Yokogawa CENTUM VP distributed control systems.
• Multi-Measurement Capability: A single transducer type covers radial shaft vibration, axial thrust position, differential expansion, eccentricity, and speed/phase reference measurements — reducing spare parts inventory to a single SKU for multiple measurement functions.
• Diagnostic Transparency: The DC component of the gap voltage provides continuous static position data alongside the AC vibration signal, enabling the monitor to simultaneously alarm on both excessive vibration amplitude and abnormal shaft centerline position — two independent fault indicators from one transducer.
• Non-Contact Operation Eliminates Wear Degradation: With no mechanical contact between probe and shaft, the transducer system’s measurement accuracy does not degrade with operating hours. Mean time between replacement is determined by environmental factors (connector corrosion, cable abrasion) rather than sensor wear, supporting multi-year calibration intervals in clean installations.

Quality Assurance & Global Logistics

Every Bently Nevada 330103-00-19-50-02-CN unit dispatched from our Xiamen, China facility undergoes a structured pre-shipment verification process:

• Authenticity Check: Serial number and date code cross-referenced against Bently Nevada (Baker Hughes) manufacturer documentation to confirm genuine origin.
• Visual Inspection: Probe tip surface, armored cable jacket, connector shell, and pin condition inspected under magnification. Units with mechanical damage, corrosion, or non-original markings are rejected.
• Electrical Verification: Coil resistance and inductance measured and compared against 3300 XL specification limits. Connector pin continuity and insulation resistance verified.
• Packaging: Anti-static inner wrap, moisture-barrier sealed bag, foam-lined outer carton. Each unit individually labeled with part number, serial number, and inspection date.
• Documentation: Certificate of conformance and inspection record available upon request. Export documentation prepared in compliance with Chinese customs regulations and destination country import requirements.
• Logistics: Standard shipment via DHL Express, FedEx International Priority, or UPS Worldwide Expedited from Xiamen Gaoqi International Airport (XMN). Typical transit time: 3–5 business days to Europe, North America, Southeast Asia, and the Middle East. Freight-on-board (FOB) Xiamen terms available for bulk orders.
• Warranty: 12 months from shipment date. Defective units replaced or credited subject to inspection. Technical support provided by email and WhatsApp throughout the warranty period.

Contact Information

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