Bently Nevada 330104-02-10-50-02-CN Proximity Transducer System – 3300 XL Series

Bently Nevada 330104-02-10-50-02-CN — Eddy Current Proximity Transducer System for API 670 Machinery Protection

The 330104-02-10-50-02-CN is a complete three-component eddy current proximity transducer system manufactured by Bently Nevada (Baker Hughes) under the 3300 XL platform. It is designed for continuous, non-contact measurement of radial shaft vibration, axial position, and differential expansion in rotating machinery operating under API 670 (4th and 5th Edition) protection requirements. The system integrates a probe, a coaxial extension cable, and a Proximitor® sensor into a single calibrated assembly, delivering a DC-coupled analog voltage output directly compatible with Bently Nevada 3500 Series rack monitors, 1900 Series protection systems, and third-party DCS or PLC analog input modules.

The -CN suffix designates the Chinese market configuration. Electrical and mechanical parameters are identical to the standard -00 variant; the designation reflects regional compliance documentation and domestic OEM integration requirements. This unit is a verified drop-in replacement for any existing 3300 XL installation without requiring recalibration of the monitoring rack.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

The 330104-02-10-50-02-CN operates on the principle of high-frequency eddy current induction. The Proximitor® sensor drives an oscillator circuit at approximately 1.0 MHz through the coaxial cable to the probe tip coil. When a conductive target (shaft) enters the probe’s electromagnetic field, eddy currents are induced on the target surface, loading the oscillator and reducing its amplitude. The Proximitor® demodulates this amplitude change into a DC voltage proportional to the air gap between probe tip and shaft surface — a relationship that remains linear within the specified 0.25 mm to 2.25 mm range.

EMC Design Architecture: The coaxial cable construction provides inherent shielding against capacitively coupled interference. The differential signal architecture within the Proximitor® sensor rejects common-mode noise generated by variable-frequency drives, high-current bus bars, and adjacent instrumentation cabling — a critical requirement in turbine enclosures where electromagnetic field densities routinely exceed 10 V/m. The armored stainless steel braid on the probe integral cable provides additional mechanical and RF shielding in environments with direct exposure to steam, oil mist, and vibrating structural members.

Thermal Stability: The probe tip assembly uses a ceramic-filled epoxy potting compound with a coefficient of thermal expansion (CTE) matched to the M10 stainless steel body. This minimizes thermally induced dimensional changes that would otherwise introduce a static offset error at elevated operating temperatures. At the Proximitor® sensor, a temperature-compensated oscillator circuit maintains scale factor accuracy within ±1% across the full –35°C to +85°C operating range without external compensation.

Cable System Impedance Matching: The 6.0 m total cable system (1.0 m integral + 5.0 m extension) is impedance-matched to the Proximitor® oscillator circuit. Substituting non-OEM cables of different capacitance per unit length will shift the oscillator operating point and alter the scale factor — a common source of calibration drift in field-repaired systems. The 330104-02-10-50-02-CN ships as a factory-matched, serialized system to eliminate this variable.

System Integration Benefits

• Zero Mechanical Wear: Non-contact measurement eliminates probe-to-shaft contact, enabling continuous 24/7 operation across multi-year maintenance intervals without sensor degradation or replacement cycles.
• DC-Coupled Output for Axial Position: The DC-coupled –2 VDC to –18 VDC output captures both static (DC) position and dynamic (AC) vibration simultaneously, allowing a single channel to serve both axial position and vibration monitoring functions in API 670 systems.
• 10 kHz Bandwidth for High-Speed Machinery: The –3 dB frequency response at 10,000 Hz resolves vibration events at shaft speeds up to 600,000 RPM for 1× components, covering the full range of industrial turbomachinery from slow-roll (< 100 RPM) to high-speed compressors (> 30,000 RPM).
• Direct Rack Compatibility: Output signal is directly compatible with Bently Nevada 3500/40M, 3500/42M, 3500/45, and 3500/46M monitor modules without signal conditioning adapters, reducing wiring complexity and eliminating potential signal chain errors.
• Third-Party DCS/PLC Integration: The –2 VDC to –18 VDC analog output interfaces directly with any DCS or PLC analog input card accepting this range (minimum input impedance 10 kΩ), enabling integration into Siemens SIMATIC, ABB 800xA, Honeywell Experion, and Emerson DeltaV systems without additional signal converters.
• Deterministic Diagnostic Transparency: The Proximitor® sensor provides a continuous, real-time analog output with no digital latency or sampling jitter, ensuring that transient vibration events (e.g., blade loss, rub events) are captured with full fidelity and without the aliasing artifacts inherent in sampled digital systems.
• API 670 Compliance for Safety Loops: The system meets API 670 requirements for probe gap voltage, scale factor, and frequency response, qualifying it for use in safety instrumented systems (SIS) where machinery protection trip logic depends on certified sensor performance.
• Serialized Traceability: Each system ships with a serialized calibration data sheet traceable to OEM manufacturing records, supporting ISO 9001 and IEC 61511 documentation requirements for safety-critical installations.
• Reduced Commissioning Time: Factory-matched probe, cable, and Proximitor® assembly eliminates field calibration of the transducer system. Commissioning is limited to gap voltage verification and monitor rack configuration, reducing site commissioning time by an estimated 60–70% compared to individually sourced components.
• Interchangeability with –00 Variant: The -CN configuration is electrically and mechanically identical to the standard 330104-02-10-50-02-00, providing full interchangeability in existing 3300 XL installations without monitor reconfiguration or scale factor adjustment.

Quality Assurance & Global Logistics

All 330104-02-10-50-02-CN units offered through siemensplc.com are sourced from authorized Bently Nevada / Baker Hughes distribution channels or verified surplus inventory with full documentation traceability. Each unit undergoes a structured incoming inspection protocol prior to dispatch:

• Visual Inspection: Probe tip, cable jacket, connector pins, and Proximitor® housing examined for mechanical damage, corrosion, or counterfeit indicators.
• Dimensional Verification: Probe thread pitch and tip diameter verified against OEM drawings.
• Functional Test: Gap voltage output measured at 1.0 mm and 2.0 mm reference gaps using a calibrated AISI 4140 target plate; scale factor confirmed within ±1% of 7.87 V/mm nominal.
• Documentation Package: OEM calibration data sheet, material test report (MTR) where available, and packing list included with each shipment.
• Anti-Counterfeit Screening: Surplus units subjected to serial number verification against OEM records and physical authentication checks.

Shipments originate from our warehouse in Xiamen, China. Standard export documentation — commercial invoice, packing list, and certificate of origin — is prepared for all international orders. Preferred carriers are DHL Express and FedEx International Priority, with typical transit times of 3–5 business days to major industrial hubs in Southeast Asia, the Middle East, Europe, and the Americas. For time-critical plant shutdowns or emergency replacements, same-day dispatch is available for in-stock units confirmed before 14:00 CST. Customs HS code and export classification documentation are provided upon request to facilitate smooth customs clearance in regulated markets.

Contact Information

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