Bently Nevada 330104-00-16-10-02-00 Proximity Probe – 3300 XL Series

Bently Nevada 330104-00-16-10-02-00 — Eddy-Current Displacement Measurement at the Core of Rotating Machinery Protection

In any continuous-process plant — refinery, power station, LNG terminal — the rotating machinery train is the revenue-generating backbone. When a steam turbine or centrifugal compressor trips unexpectedly, the cost is not measured in hours; it is measured in production barrels, megawatt-hours, and contractual penalties. The Bently Nevada 330104-00-16-10-02-00 is the field-proven eddy-current proximity probe that sits at the front end of that protection chain, converting shaft displacement into a calibrated DC voltage signal with the precision and repeatability that API 670 machinery protection demands.

This unit belongs to the 3300 XL 8 mm Proximity Transducer System — a matched three-component architecture (probe + extension cable + Proximitor® sensor) that has been the de facto standard for radial vibration and axial position monitoring across the oil & gas, power generation, and petrochemical industries for decades. The 330104-00-16-10-02-00 suffix configuration specifies a 5 m (16 ft) integral cable, M10 × 1 thread, armored jacket, and a 2-pin MIL-C-5015 connector — a configuration optimized for installations where the probe-to-driver distance requires a longer integral run before the extension cable junction.

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Technical Parameters

Hardware Logical Analysis

The 330104-00-16-10-02-00 operates on the principle of high-frequency eddy-current induction. The probe tip houses a wound coil driven by a radio-frequency oscillator embedded in the matched Proximitor® sensor (330180 Series). As the conductive target surface — typically the shaft journal — approaches the probe face, eddy currents are induced in the target material, loading the oscillator circuit and reducing its amplitude. This amplitude modulation is demodulated and linearized within the Proximitor® to produce the calibrated −24 VDC to 0 VDC output that the monitor rack interprets as gap distance.

EMC and Signal Integrity Architecture: The integral cable on the 330104-00-16-10-02-00 uses a coaxial construction with stainless steel armored braid. This dual-function shielding simultaneously provides mechanical protection against abrasion and crush loads in cable trays, and acts as an RF shield that attenuates externally induced noise before it reaches the coaxial center conductor. In high-EMI environments — adjacent to variable-frequency drives, large transformer banks, or arc furnaces — this shielding architecture maintains signal integrity without requiring additional conduit runs. The PTFE dielectric between the center conductor and braid maintains stable capacitance across the full operating temperature range, which is critical because the Proximitor® oscillator circuit is calibrated against a specific cable capacitance value; thermal drift in the dielectric would introduce a systematic gap measurement error.

Matched System Calibration Logic: The 3300 XL system is factory-calibrated as a matched set. The probe coil inductance, extension cable capacitance, and Proximitor® oscillator frequency are tuned together to achieve the 200 mV/mil sensitivity specification. Substituting any single component from a different suffix configuration — even within the 3300 XL family — will shift the calibration curve and introduce measurement error that may not be immediately apparent from the monitor’s OK relay status. The 330104-00-16-10-02-00 must therefore be paired with the correct 330130-series extension cable and 330180-series Proximitor® to maintain API 670 compliance.

Target Material Sensitivity Correction: The eddy-current field penetration depth and induced loss are functions of the target material’s electrical conductivity and magnetic permeability. The standard calibration is performed against AISI 4140 steel. Shafts machined from 17-4 PH stainless, Inconel 718, or titanium alloys will exhibit sensitivity deviations of 5–25% from the nominal 200 mV/mil figure. For non-standard target materials, Bently Nevada provides material correction factors, and the Proximitor® gain can be adjusted accordingly. This is a critical configuration step during commissioning that is frequently overlooked in replacement scenarios.

System Integration Benefits

• Direct API 670 Compliance: The 330104-00-16-10-02-00 is designed and tested to meet API 670 requirements for radial vibration and axial position transducer systems, providing a documented compliance path for machinery protection audits without additional field calibration overhead.
• Zero-Wear Sensing: Non-contact eddy-current measurement eliminates the mechanical wear mechanisms that limit the service life of contact-type displacement sensors. In continuous-duty applications — 8,760 operating hours per year — this translates directly to reduced maintenance intervals and lower lifecycle cost.
• Deterministic Signal Latency: The analog DC output of the probe-Proximitor® chain introduces no digital sampling latency. The monitor rack receives a continuous, real-time voltage signal, enabling the protection system to respond to shaft excursions within the relay trip time specification — typically under 1 ms for the 3500 Series monitor — without the additional latency of A/D conversion cycles.
• Diagnostic Transparency via OK Circuit: The Proximitor® sensor continuously monitors the probe-cable system impedance and asserts an OK relay output when the gap is within the linear range and the cable circuit is intact. A broken cable, shorted coil, or probe gap outside the linear range immediately de-energizes the OK relay, providing a hardware-level diagnostic signal to the DCS without requiring software polling.
• Drop-In Replacement Compatibility: The M10 × 1 thread, 8 mm tip diameter, and MIL-C-5015 connector are mechanically identical across the 330103 and 330104 probe families. Replacement in the field requires no machining of the probe boss or modification of the junction box wiring — reducing planned maintenance outage duration.
• Wide Thermal Operating Envelope: The −35°C to +177°C operating range covers the full spectrum of industrial deployment scenarios: outdoor installations in northern climates during winter startup, and probe boss locations adjacent to turbine casings where radiated heat can elevate ambient temperatures well above standard instrument ratings.
• Hazardous Area Certification: ATEX and FM certifications (suffix-dependent) allow deployment in Zone 1/Division 1 classified areas — compressor seal gas environments, turbine enclosures with hydrocarbon vapor risk — without requiring additional intrinsic safety barriers in all configurations.
• Seamless 3500 Series Monitor Integration: The probe output is directly compatible with the 3500/40M, 3500/42M, 3500/45, and 3500/46M monitor modules. Configuration is handled through the 3500 Rack Configuration Software (RCS) without hardware modification, enabling rapid channel commissioning and alarm setpoint entry during turnaround windows.

Quality Assurance & Global Logistics

Genuine Bently Nevada Origin: Every 330104-00-16-10-02-00 unit supplied through siemensplc.com is sourced from traceable industrial supply channels. Physical inspection covers label integrity, connector pin condition, cable jacket continuity, and housing markings consistent with Bently Nevada production standards. Electrical pre-checks — coil impedance and cable continuity — are performed where test equipment access permits. Units that do not pass inspection are quarantined and not listed for sale.

Documentation Package: Available documentation includes certificate of conformance, original OEM packaging where present, and a siemensplc.com inspection record. The Bently Nevada 3300 XL 8 mm Proximity Transducer System datasheet (GEA-12866D) is available upon request for engineering review prior to purchase.

12-Month Operational Warranty: New and surplus-new units carry a 12-month warranty against manufacturing defects from the date of shipment. Any unit exhibiting a defect within the warranty period will be replaced or credited at our discretion.

Xiamen Export Hub — Global Express Delivery: Our Xiamen warehouse operates as a dedicated export hub with established accounts on DHL Express, FedEx International Priority, and UPS Worldwide Express. In-stock units are processed for export within 24 hours of order confirmation. Typical transit times: Southeast Asia 2–3 days, Middle East 3–4 days, Europe 4–5 days, Americas 5–7 days. All shipments include a commercial invoice, packing list, and certificate of origin. HS code classification and export licensing guidance are provided as standard for cross-border compliance. For bulk orders exceeding 10 units, sea freight consolidation via Xiamen Port is available with competitive lead times.

Contact Information

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