Bently Nevada 330103-00-03-10-02-00 Proximity Probe – 3300 XL Series

Bently Nevada 330103-00-03-10-02-00 — Eddy-Current Proximity Probe in the 3300 XL Transducer System

The 330103-00-03-10-02-00 is a 5 mm tip-diameter, armored-cable eddy-current proximity probe manufactured by Bently Nevada (Baker Hughes) as part of the 3300 XL Proximity Transducer System. Within a machinery protection loop, this probe functions as the primary sensing element: it generates a high-frequency electromagnetic field (nominally 1.0 MHz) at its tip, and the amplitude of the eddy-current loss induced in the conductive target surface is converted — by the matched proximitor/oscillator-demodulator — into a DC voltage proportional to the air gap. The output scale factor is 7.87 V/mm (200 mV/mil), and the linear measurement range spans 0.25 mm to 2.25 mm (10 mil to 90 mil), placing the nominal installation gap at 1.0 mm (40 mil) — the midpoint of the calibrated range.

In a rotating-machinery protection architecture, this probe is wired in series with a 330130-series extension cable and a 3300 XL proximitor driver. The driver supplies the –24 VDC bias and demodulates the RF carrier into the DC gap signal. That signal is then routed to a Bently Nevada 3500-series monitor rack or System 1 software platform for alarm, trip, and long-term trending. The entire signal chain — probe, extension cable, and driver — must be matched Bently Nevada components to preserve the factory calibration and API 670 traceability.

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

Technical Parameters

Hardware Logical Analysis

The 330103-00-03-10-02-00 probe body is constructed from 316L stainless steel, providing corrosion resistance in oil-mist and process-gas environments. The tip coil is wound on a ferrite core and encapsulated in a thermally stable polymer compound rated to 177 °C, preventing coil geometry shift under thermal cycling — a failure mode that degrades scale-factor linearity in lower-grade sensors.

EMC Design: The armored cable acts as a coaxial shield, attenuating radiated interference from adjacent VFD cabling and high-current bus bars. The shield is grounded at the proximitor end only (single-point grounding), eliminating ground-loop currents that would appear as low-frequency noise on the gap signal. Bently Nevada specifies a maximum allowable shield resistance of 1 Ω for the 5 m cable assembly; exceeding this threshold increases susceptibility to common-mode interference above 1 kHz.

Impedance Matching: The probe coil impedance is factory-trimmed to match the 3300 XL proximitor input network. Impedance mismatch — caused by using non-OEM extension cables or third-party drivers — shifts the resonant frequency of the LC tank circuit, compressing the linear range and introducing a non-linear scale-factor error that cannot be corrected by software gain adjustment alone.

Thermal Stability: The encapsulant compound has a coefficient of thermal expansion (CTE) matched to the ferrite core, limiting tip-coil inductance drift to less than ±0.5% across the full operating temperature range. This is critical for axial position probes monitoring thrust-bearing clearance, where a 1 °C ambient shift must not produce more than 2.5 µm of apparent position error.

Mechanical Robustness: The armored cable jacket resists crush loads up to 500 N/cm and is rated for continuous immersion in turbine lube oil and water-glycol coolants. The BNC-compatible termination uses a gold-plated center pin to prevent contact resistance creep over the service life of the installation.

System Integration Benefits

• Zero-wear sensing: Non-contact measurement principle eliminates mechanical degradation of the sensing element; probe service life is determined by environmental exposure, not contact fatigue.
• DC-to-10 kHz bandwidth: Captures both quasi-static shaft position (thrust bearing wear, thermal growth) and dynamic vibration components up to the 10th harmonic of a 60,000 RPM machine — within a single signal path.
• Sub-micron displacement resolution: At 200 mV/mil scale factor and a typical monitor input resolution of 0.1 mV, the effective displacement resolution is approximately 0.5 µm — sufficient for early-stage bearing wear detection before amplitude alarm thresholds are reached.
• API 670 compliance: Direct drop-in compatibility with API 670-specified machinery protection systems; no derating or supplemental documentation required for new-unit commissioning or insurance audits.
• Plug-and-play OEM replacement: Identical electrical and mechanical interface to all 330103-series probes; no recalibration of the proximitor or monitor rack required when replacing a failed probe in an existing 3300 XL installation.
• Deterministic signal latency: The analog DC output has no digital processing delay; the monitor rack receives a real-time gap voltage with latency determined only by the proximitor demodulator filter (typically <1 ms at 10 kHz bandwidth setting).
• Diagnostic transparency: The –24 VDC bias voltage is continuously monitored by the 3500-series rack; an open-circuit probe cable or shorted coil produces a bias voltage outside the –22 V to –26 V window, triggering a Not-OK (NOK) relay output and flagging the channel in System 1 — isolating the fault to the probe/cable assembly without ambiguity.
• Multi-machine scalability: A single 3500-series rack accepts up to 16 proximity channels; each 330103 probe integrates without additional signal conditioning hardware, reducing panel footprint and wiring complexity in multi-machine monitoring installations.

Quality Assurance & Global Logistics

Every 330103-00-03-10-02-00 unit dispatched from our Xiamen, China facility is sourced through verified supply channels with full OEM traceability. Pre-shipment inspection covers tip coil continuity, cable armor integrity, connector contact resistance (<5 mΩ), and physical condition of the probe body and cable jacket. Units failing any inspection criterion are quarantined and not offered for sale.

Documentation available upon request includes: original Bently Nevada datasheet, certificate of conformance, and inspection record. For projects requiring third-party verification, we can coordinate with SGS or Bureau Veritas inspection services at the buyer’s request.

Logistics from Xiamen port: DHL Express (2–4 business days to Europe/North America), FedEx International Priority (3–5 business days), and sea freight consolidation for bulk orders. Export documentation — commercial invoice, packing list, and HS code 9031.80 classification — is prepared for all international shipments. Expedited same-day dispatch is available for in-stock units ordered before 14:00 CST.

All units carry a 12-month warranty from the date of dispatch, covering manufacturing defects and premature failure under normal operating conditions as defined in Bently Nevada Installation Manual 141078.

Contact Information

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