Bently Nevada 330910-00-13-10-02-00 Proximity Probe – 3300 XL NSv

Bently Nevada 330910-00-13-10-02-00 NSv Eddy-Current Proximity Probe — Shaft Dynamics Sensing for 3300 XL Machinery Protection Systems

The 330910-00-13-10-02-00 is an 8 mm NSv (Non-contacting, Shaft-voltage-immune) eddy-current proximity probe manufactured by Bently Nevada, a Baker Hughes company. It functions as the primary sensing transducer within the 3300 XL Proximitor® system architecture, delivering continuous, non-contact measurement of radial shaft vibration, axial position, and differential expansion on critical rotating machinery. The probe is OEM-specified for API 670-compliant machinery protection installations across power generation, oil & gas, petrochemical refining, and heavy industrial sectors.

Unlike general-purpose inductive sensors, the 330910-00-13-10-02-00 is factory-calibrated as a matched system component. Its output scale factor of 7.87 V/mm (200 mV/mil) is set at manufacture to pair directly with the 3300 XL 8 mm Proximitor® driver — no field calibration is required on replacement. This deterministic calibration chain is a prerequisite for API 670 compliance, where measurement uncertainty must remain within ±1% of full-scale across the rated temperature range.

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

Technical Parameters

Hardware Logical Analysis

The 330910-00-13-10-02-00 operates on the eddy-current induction principle. The probe tip houses a wound coil driven by a high-frequency oscillator within the Proximitor® driver. When the coil approaches a conductive target (the rotating shaft), eddy currents are induced on the target surface, loading the oscillator circuit and reducing coil impedance. The Proximitor® driver converts this impedance change into a DC-biased voltage output proportional to the gap distance between probe tip and shaft surface.

NSv (Shaft-Voltage-Immune) Architecture: Standard eddy-current probes are susceptible to shaft-generated voltages — electrostatic discharge from steam flow, stray currents from variable-frequency drives, or ground loops in large turbomachinery frames. These voltages superimpose on the probe signal and appear as false vibration components. The NSv design incorporates a differential coil topology and a shielded cable geometry that rejects common-mode shaft voltage up to specified limits, preserving measurement integrity without requiring additional shaft grounding hardware.

EMC Design: The integral armored cable uses a double-shielded coaxial construction — inner shield referenced to probe body ground, outer armor providing mechanical protection and additional RF shielding. This architecture attenuates externally coupled electromagnetic interference across the 50 Hz – 10 kHz band, which is critical in switchgear rooms and near large motor drives where radiated field strengths can exceed 10 V/m.

Thermal Stability: The probe coil former and housing are constructed from materials with matched thermal expansion coefficients. This minimizes scale factor drift across the –35 °C to +177 °C operating range. Bently Nevada specifies scale factor variation of less than ±0.5% over the full temperature range for 3300 XL system components — a requirement that directly affects alarm and trip setpoint accuracy in API 670 systems.

Mechanical Construction: The M10 × 1.0 threaded body allows precise gap adjustment during installation. The armored cable resists crush loads, oil immersion, and chemical exposure from turbine lube oil, steam condensate, and cleaning solvents. The probe tip is sealed to IP67 minimum, preventing moisture ingress that would alter the dielectric properties of the coil assembly and shift the calibration curve.

System Integration Benefits

• Zero-recalibration replacement: Factory-matched scale factor of 7.87 V/mm eliminates the need for in-situ calibration verification on direct replacement within an existing 3300 XL system, reducing planned maintenance downtime to the time required for mechanical installation and gap setting only.
• API 670 measurement chain compliance: The probe, extension cable, and Proximitor® driver form a certified measurement chain meeting API 670 Fifth Edition accuracy requirements. This is a mandatory prerequisite for machinery protection systems on compressors, turbines, and pumps in regulated process industries.
• DC-coupled frequency response: The DC – 10,000 Hz flat response captures both quasi-static shaft position changes (thermal growth, load shifts) and high-frequency vibration components (blade-pass frequencies, gear mesh) within a single measurement channel, eliminating the need for separate position and vibration transducers on many applications.
• Deterministic signal latency: The analog output of the Proximitor® driver provides a continuous, real-time signal with no digitization latency at the transducer level. This is essential for machinery protection trip functions where response time from vibration onset to relay output must be less than 1 ms per API 670 requirements.
• Shaft voltage rejection for VFD-driven machinery: NSv immunity allows deployment on motor-driven compressors and pumps controlled by variable-frequency drives without the shaft grounding brushes or insulated bearing housings that would otherwise be required to protect measurement integrity.
• Diagnostic transparency via gap voltage monitoring: The DC bias voltage output provides a continuous indication of probe-to-shaft gap. Monitoring this value over time reveals bearing wear (decreasing gap), shaft bow (oscillating gap at 1× running speed), and probe fouling (erratic gap readings) — all without additional instrumentation.
• Compatibility with 3500 series monitor diagnostics: When connected to a 3500/40M or 3500/42M monitor module, the system performs automated transducer health checks including open-circuit detection, short-circuit detection, and out-of-range gap alarms. These diagnostics are reported to the DCS via Modbus or 4–20 mA, providing full instrumentation loop transparency.
• Hazardous area certification: ATEX and IECEx approvals allow installation in Zone 1 and Zone 2 classified areas without additional barriers or enclosures in most configurations, simplifying installation design and reducing installed cost in offshore and refinery environments.
• Long service intervals: Non-contacting measurement eliminates mechanical wear at the sensing element. In clean lube oil environments, probe service life exceeds 10 years without performance degradation, reducing lifecycle cost compared to contact-type position sensors.

Quality Assurance & Global Logistics

Every 330910-00-13-10-02-00 unit supplied by siemensplc.com is sourced through verified channels — authorized distributors and traceable OEM surplus inventory. Each unit undergoes physical inspection covering connector integrity, cable armor continuity, thread condition, and probe tip surface condition prior to dispatch. Original manufacturer documentation, including datasheets and Certificate of Conformance (CoC), is available upon request for qualifying orders.

Our warehouse is located in Xiamen, China — a major international logistics hub with direct access to Xiamen Gaoqi International Airport and Xiamen Port. Standard international shipments are dispatched within 1–3 business days of order confirmation. Express air freight options (DHL, FedEx, UPS) support delivery to most global destinations within 3–7 business days. Full customs documentation, including commercial invoice, packing list, and HS code declaration (HS 9031.80), is prepared for every international shipment to minimize clearance delays.

For critical plant shutdowns requiring same-day or next-flight-out dispatch, contact our team directly via email or WhatsApp. We maintain stock of high-demand Bently Nevada 3300 XL components specifically to support emergency procurement scenarios in power generation and process industries.

All products carry a 12-month warranty from the date of shipment, covering manufacturing defects and verified calibration non-conformance. Warranty claims are processed with replacement shipment priority to minimize plant downtime impact.

Contact Information

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