Bently Nevada 330104-00-23-10-01-CN Proximity Transducer – 3300 XL Series

Bently Nevada 330104-00-23-10-01-CN: Eddy Current Proximity Transducer for Continuous Shaft Vibration Measurement

The 330104-00-23-10-01-CN is a 5 mm tip-diameter eddy current proximity transducer belonging to the Bently Nevada 3300 XL Series — a three-component measurement system (transducer, extension cable, driver) engineered to API 670 Fourth Edition requirements for machinery protection on rotating equipment. This unit is configured with a 584 mm (23 in) integral cable, a 10-32 coaxial connector, and a nominal linear measurement range of 200 mil (5.08 mm), making it the standard selection for radial shaft vibration and axial position monitoring on steam turbines, gas turbines, centrifugal compressors, and high-speed pumps operating in oil & gas, power generation, and petrochemical environments.

Unlike contact-type displacement sensors, the eddy current transducer generates a high-frequency electromagnetic field at its tip coil. When a conductive target — typically AISI 4140 or equivalent ferromagnetic steel — enters this field, eddy currents are induced on the target surface, loading the transducer coil and altering its impedance. The paired 3300 XL driver (oscillator-demodulator) converts this impedance variation into a DC voltage output: nominally −10.0 VDC at mid-range gap, with a sensitivity of 200 mV/mil (7.87 V/mm). This analog output feeds directly into Bently Nevada 3500 Series rack monitors or third-party DCS/PLC analog input modules, enabling real-time orbit analysis, 1X/2X amplitude trending, and trip/alarm logic without any mechanical contact with the rotating shaft.

The “-CN” suffix designates the Chinese-market configuration, which carries localized compliance documentation and CE/RoHS markings. All electrical, mechanical, and metrology specifications are identical to the global variant. The part is manufactured by Baker Hughes (Bently Nevada division) and is traceable to OEM production records.

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

Technical Parameters

Hardware Logical Analysis

Coil Impedance Modulation and Gap-to-Voltage Linearity: The transducer tip houses a precision-wound coil driven by the 3300 XL driver at a fixed carrier frequency (typically 1.0 MHz). As the conductive target approaches, eddy current losses increase, reducing coil Q-factor and shifting the resonant impedance. The driver’s demodulation stage extracts the envelope of this impedance shift and outputs a linear DC voltage across the 200 mil range. Linearity error is held to ±0.5% of full scale through factory calibration against a certified AISI 4140 target fixture, traceable to NIST standards.

EMC Design and Shielding Architecture: The armored integral cable uses a triaxial construction: the inner conductor carries the RF drive signal, the inner shield is driven at the same potential as the center conductor (guard drive) to eliminate cable capacitance loading, and the outer shield provides EMI rejection. This guard-drive topology allows cable runs up to the specified extension cable length without degrading the transducer’s frequency response or introducing capacitive phase shift — a critical requirement in high-EMI environments such as variable-frequency drive (VFD) motor rooms and switchgear enclosures.

Thermal Stability and Compensation: The transducer body is constructed from 316 stainless steel with a PEEK (polyether ether ketone) tip housing. PEEK’s low thermal expansion coefficient (50 × 10⁻⁶ /°C) minimizes dimensional drift of the coil-to-tip geometry across the −35°C to +177°C operating envelope. The driver module applies a temperature compensation algorithm that corrects sensitivity drift to within ±0.5 mV/mil/°C, ensuring measurement accuracy is maintained during turbine startup thermal transients.

Redundancy and Voting Logic Compatibility: In API 670-compliant machinery protection systems, the 330104-00-23-10-01-CN is typically deployed in dual or triple redundant configurations per measurement plane. Each transducer feeds an independent channel in the 3500 rack, enabling 2oo3 (two-out-of-three) voting logic for trip decisions. This architecture eliminates single-point failure modes in the measurement chain and satisfies SIL 2 functional safety requirements when integrated with a certified safety instrumented system (SIS).

System Integration Benefits

• Zero mechanical wear on the measurement path: Non-contact operation eliminates sensor degradation from shaft contact, supporting continuous 24/7 monitoring without scheduled sensor replacement intervals.
• DC-to-10 kHz bandwidth: Captures the full spectrum of rotating machinery fault signatures — from sub-synchronous instabilities (oil whirl, surge) at <1X through high-frequency blade-pass and gear-mesh events, without aliasing or bandwidth-induced phase error.
• Direct API 670 compliance: Eliminates re-qualification testing for new installations on API-governed equipment, reducing commissioning schedule risk and engineering review cycles.
• Drop-in compatibility with 3500 Series racks: The −10 VDC bias output and 200 mV/mil sensitivity are factory-matched to 3500/40M and 3500/42M I/O module input ranges, requiring no signal conditioning or scaling adjustment at the rack.
• Deterministic signal latency: The analog output path (transducer → extension cable → driver → rack I/O) introduces <1 ms group delay at 1 kHz, preserving phase relationships critical for orbit plot accuracy and cross-channel correlation in multi-plane vibration analysis.
• Plug-and-play retrofit compatibility: Mechanically and electrically interchangeable with all 3300 XL transducers of the same tip diameter and cable length, enabling field replacement without recalibration of the driver or rack channel.
• Diagnostic transparency via bias voltage monitoring: The −10 VDC bias output serves as a continuous self-diagnostic indicator. A bias voltage outside the −9.5 to −10.5 VDC window at mid-range gap signals transducer degradation, cable fault, or driver failure — enabling predictive maintenance before measurement accuracy is compromised.
• Broad DCS/PLC interoperability: The DC voltage output is compatible with standard ±10 V analog input cards on Siemens S7, Rockwell ControlLogix, Emerson DeltaV, and Yokogawa CENTUM platforms via direct wiring or 4–20 mA signal conditioner, without requiring proprietary communication modules.

Quality Assurance & Global Logistics

Every 330104-00-23-10-01-CN unit supplied by siemensplc.com is sourced as genuine Bently Nevada (Baker Hughes) OEM product. Units are procured through verified industrial distribution channels with full supply chain traceability from manufacturer to end customer. Incoming inspection covers visual examination, dimensional verification of tip geometry, connector integrity, and functional bias voltage measurement against the OEM datasheet tolerance band. A Certificate of Conformance (CoC) is available upon request for each shipment lot.

Packaging follows ESD-safe protocols: each transducer ships in anti-static foam-lined packaging with connector caps installed to protect the 10-32 coaxial interface. For international shipments, units are double-boxed with vibration-dampening inserts rated for air freight handling per ISTA 2A standards.

Our logistics hub is located in Xiamen, China — a major international port city with direct air freight connections to Hong Kong, Singapore, Dubai, Frankfurt, Los Angeles, and Chicago. Standard export lead time for in-stock units is 1–3 business days after order confirmation. DHL Express, FedEx International Priority, and UPI air freight options are available. All shipments include commercial invoice, packing list, and HS code 9031.80 classification documentation for customs clearance. Expedited same-day dispatch is available for orders confirmed before 14:00 CST.

Contact Information

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