Bently Nevada 330130-00-05-05-02-00 Proximity Probe – 3300 XL Series

Bently Nevada 330130-00-05-05-02-00 — 8mm Eddy-Current Proximity Probe in the 3300 XL Transducer System

The Bently Nevada 330130-00-05-05-02-00 is a factory-calibrated, non-contact eddy-current proximity probe belonging to the 3300 XL 8mm Proximity Transducer System. It operates on the principle of electromagnetic induction: a high-frequency oscillator within the paired driver (e.g., 330180-X1-05) drives an alternating magnetic field through the probe tip coil. When a conductive target — typically AISI 4140 steel shaft — enters the field, eddy currents are induced on the target surface, loading the oscillator circuit and producing a DC output voltage proportional to the gap distance. This mechanism delivers sub-micron displacement resolution across a DC-to-10,000 Hz bandwidth, making it the measurement backbone for API 670-compliant machinery protection systems in turbines, compressors, and pumps.

The 330130 probe assembly ships as a 5 m integral cable unit paired with a 5 m extension cable (suffix -05-05), terminated with a standard coaxial connector (suffix -02-00). The matched probe-extension-driver system is factory-calibrated as a unit; sensitivity is certified at 7.87 V/mm (200 mV/mil) across the linear range of 0.25–2.54 mm (10–100 mil). Substituting any single element without recalibration degrades system accuracy and may invalidate API 670 compliance.

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

Technical Parameters

Hardware Logical Analysis

Oscillator-Demodulator Architecture: The 330130 probe coil is the passive sensing element in a two-terminal LC tank circuit. The driver (330180 series) contains the Colpitts-type oscillator that sustains resonance at approximately 1 MHz. As the conductive target approaches the probe face, eddy-current losses increase the effective resistance of the tank circuit, reducing oscillation amplitude. The driver’s demodulator stage converts this amplitude modulation into a linear DC voltage output. The result is a transfer function with a slope of 7.87 V/mm that remains stable across the full –35°C to +177°C probe temperature range — a critical requirement for steam turbine bearing housings where ambient temperatures routinely exceed 120°C.

EMC Design and Shielding: The coaxial cable construction provides continuous 360° electrostatic shielding from probe tip to driver input. The shield is grounded at the driver end only (single-point grounding), eliminating ground-loop currents that would otherwise appear as low-frequency noise on the output signal. The PTFE cable jacket provides dielectric stability across the full temperature range and resists hydrocarbon contamination common in oil & gas environments. In high-EMI environments — such as variable-frequency drive (VFD) motor rooms — the coaxial architecture attenuates common-mode interference by more than 60 dB, preserving signal integrity at the 1 µm displacement resolution level.

Gap Voltage and Calibration Traceability: Each 330130 probe is factory-calibrated as a matched system with its designated extension cable and driver. The calibration record documents the actual sensitivity curve (V/mm vs. gap) at three temperatures: –20°C, +25°C, and +150°C. Sensitivity deviation across this range is specified at ±0.5%, ensuring that thermal gradients in the machine casing do not introduce measurement bias. The calibration certificate is traceable to NIST (or equivalent national metrology institute) standards, satisfying the documentation requirements of ISO 17025-accredited machinery protection programs.

Mechanical Integration: The M10 × 1.0 probe body thread and 14 mm hex flat allow installation with a standard torque wrench. The locknut assembly maintains gap setting under vibration loads up to 50 g (20–2,000 Hz per IEC 60068-2-6). The 316 stainless steel body resists corrosion in wet gas and sour service environments (H₂S partial pressure up to 0.05 MPa per NACE MR0175 guidance).

System Integration Benefits

• Deterministic DC-to-10 kHz bandwidth: The flat frequency response from DC to 10,000 Hz captures both quasi-static shaft position (thrust, differential expansion) and high-frequency vibration harmonics up to the 10th order of a 60,000 RPM machine on a single channel — eliminating the need for separate position and vibration transducers.
• Plug-and-play compatibility with 3500 Series monitors: The –24 VDC supply and standard coaxial output interface directly with Bently Nevada 3500/40M, 3500/42M, 3500/45, and 3500/46M monitor cards without signal conditioning adapters, reducing panel wiring complexity and potential failure points.
• API 670 system certification: The probe-extension-driver assembly is certified as a complete measurement chain per API 670 (5th Edition), satisfying the machinery protection requirements of major EPC contractors and insurance underwriters without additional third-party validation.
• Diagnostic transparency via System 1: When integrated with Bently Nevada System 1 software, the probe output feeds continuous waveform acquisition at up to 65,536 samples/revolution, enabling orbit plot analysis, waterfall spectrum trending, and automated alert generation — all without interrupting the protection function.
• Intrinsically safe variants for Zone 0/1 hazardous areas: The -02-00 suffix designates the IS-certified termination, allowing installation in ATEX/IECEx Zone 0 classified areas (gas groups IIA, IIB, IIC) without additional Zener barriers in most configurations — simplifying Ex documentation and reducing installed cost.
• Thermal stability for hot-section installations: The +177°C probe tip rating covers direct installation on steam turbine bearing pedestals and gas turbine exhaust-end bearing housings where competing probe technologies (e.g., piezoelectric accelerometers) require remote mounting with signal loss penalties.
• Redundant measurement architecture support: Two 330130 probes mounted at 90° (X-Y configuration) per bearing provide the orthogonal displacement data required for full orbit reconstruction. The matched sensitivity of factory-calibrated pairs ensures that orbit ellipticity calculations are not distorted by inter-channel sensitivity mismatch.
• Long-term calibration stability: The passive probe coil has no active components subject to drift. Field experience across petrochemical and power generation installations documents sensitivity drift of less than 0.2% per year under continuous operation, reducing the calibration interval burden compared to active sensor technologies.

Quality Assurance & Global Logistics

Every Bently Nevada 330130-00-05-05-02-00 unit dispatched from our Xiamen, China facility is sourced through verified authorized distribution channels and undergoes a structured pre-shipment inspection protocol:

• Authenticity verification: Serial number and date code cross-referenced against Bently Nevada / Baker Hughes factory records. Counterfeit screening includes coil impedance measurement and cable continuity check against OEM specification tolerances.
• Electrical performance test: Each probe is bench-tested with a calibrated 330180 driver on a precision gap fixture. Output voltage at 0.5 mm, 1.27 mm, and 2.0 mm gaps is recorded and compared against the factory calibration certificate. Units outside ±1% of nominal sensitivity are quarantined.
• Packaging integrity: Anti-static foam insert, moisture-barrier bag with desiccant, and rigid outer carton rated for 50 kg drop test per ISTA 2A. Probe tip protected by machined aluminum cap during transit.
• Documentation package: Ships with original Bently Nevada calibration certificate, material certificate (316 SS body), CE/ATEX declaration of conformity, and our 12-month warranty card.
• Export compliance: HS Code 9031.80.90 (precision measurement instruments). Export license screening completed for all destinations. Typical transit times: 3–5 business days to Southeast Asia and Middle East via DHL/FedEx express; 5–8 business days to Europe and North America.
• Customs documentation: Commercial invoice, packing list, and certificate of origin (China) provided as standard. FORM E (ASEAN-China FTA) available on request for eligible destinations.

Our Xiamen warehouse maintains buffer stock of the most common 330130 variants. In-stock orders placed before 14:00 CST ship same business day. For project quantities (10+ units) or complete 3300 XL system assemblies, contact our technical sales team for lead time and volume pricing.

Contact Information

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