Bently Nevada 330103-00-24-10-01-00 Proximity Transducer – 3300 XL Series

330103-00-24-10-01-00 — 8 mm Eddy-Current Proximity Transducer in the Bently Nevada 3300 XL System Architecture

In a rotating machinery protection loop, the proximity transducer is the first physical interface between the machine and the monitoring system. Its output — a DC voltage proportional to the gap between probe tip and target surface — feeds directly into the Proximitor® sensor, which conditions the signal before it reaches the 3500 Series monitor for alarm and trip logic. Any degradation in transducer linearity, sensitivity, or impedance matching propagates as measurement error through the entire protection chain. The Bently Nevada 330103-00-24-10-01-00 is engineered to eliminate that error source.

This model is a matched-system component within the 3300 XL Proximity Transducer Series. The part number encodes its full configuration: 330103 (probe body, 8 mm tip diameter, 10-32 UNF thread), 00 (standard armored cable), 24 (24-inch integral cable), 10 (metric calibration, AISI 4140 steel target), 01 (standard connector), 00 (no special options). Each field is factory-set and calibration-verified — field substitution of individual sub-assemblies is not supported and will invalidate system calibration.

The 3300 XL series operates on the eddy-current principle: a high-frequency oscillator (typically 1.0 MHz) drives a coil wound at the probe tip, generating an electromagnetic field that penetrates the conductive target surface. As the gap changes, eddy-current loading on the coil alters its impedance, which the Proximitor® sensor converts to a linear DC output of −200 mV/mil (−7.87 V/mm) over the calibrated range of 10–90 mil (0.25–2.29 mm). This output is used for radial vibration, axial position, differential expansion, and eccentricity measurements — all critical parameters under API 670 Fourth Edition.

Deployed across gas turbines, steam turbines, centrifugal compressors, expanders, and high-speed pumps in power generation, oil and gas, petrochemical, and heavy process industries, the 330103-00-24-10-01-00 is a direct-replacement component for existing 3300 XL installations. No Proximitor® recalibration is required when replacing a like-for-like unit on an AISI 4140 steel target with an unchanged gap setting.

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Technical Parameters

Hardware Logical Analysis

The 330103-00-24-10-01-00 probe body is wound with a precision coil encapsulated in a ceramic-filled epoxy matrix, which provides both mechanical rigidity and thermal stability across the rated temperature range. The coil geometry is matched at the factory to the 330180 Series Proximitor® sensor to achieve the specified scale factor within ±1% over the full linear range — a tolerance that cannot be maintained if the probe is paired with a non-matched signal conditioner.

The 24-inch armored integral cable is a critical design element. Unlike field-assembled extension cable systems, the integral cable eliminates the connector junction between probe and cable — a common source of impedance discontinuity and signal noise in high-frequency eddy-current circuits. The armor braid provides mechanical protection against abrasion and crush loads in turbine bearing pedestals and compressor casings, while the cable shield is terminated at the Proximitor® end to establish a single-point ground reference, suppressing common-mode EMI from adjacent power cables and variable-frequency drives.

The 10-32 UNF thread and 8 mm tip diameter are dimensionally compatible with standard API 670 probe mounting bosses. The stainless steel housing resists corrosion from bearing oil mist, steam condensate, and process gas atmospheres. The probe tip face is ground flat to a controlled surface finish to ensure consistent electromagnetic coupling geometry — a factor that directly affects scale factor repeatability across replacement units.

From an EMC standpoint, the 3300 XL probe operates at a carrier frequency well above the industrial noise band (50/60 Hz and harmonics), and the Proximitor® sensor’s demodulation circuit is tuned to reject out-of-band interference. This architecture provides inherent immunity to conducted and radiated EMI without requiring external filtering, which is significant in switchgear rooms and motor control centers where field wiring runs parallel to high-current bus bars.

System Integration Benefits

• Direct API 670 Compliance: The 330103-00-24-10-01-00 meets API 670 Fourth Edition requirements for proximity transducer systems used in machinery protection, eliminating the need for additional compliance engineering when specifying replacement parts.
• Deterministic Scale Factor: Factory-matched probe-to-Proximitor® calibration delivers a repeatable −200 mV/mil output, ensuring that alarm and trip setpoints configured in the 3500 Series monitor remain valid across unit replacements without recalibration downtime.
• Zero-Recalibration Replacement: Like-for-like substitution on an AISI 4140 target with unchanged gap geometry requires no Proximitor® adjustment, reducing planned maintenance windows from hours to minutes.
• Diagnostic Transparency: The linear DC output of the Proximitor® sensor allows direct gap measurement using a standard voltmeter, enabling field technicians to verify probe installation gap without specialized instrumentation.
• Multi-Parameter Measurement: A single probe installation supports simultaneous radial vibration (dynamic AC component) and average shaft position (DC component) measurement, reducing the number of penetrations required in bearing housings.
• Hazardous Area Compatibility: The 3300 XL system is compatible with Zener barriers and galvanic isolators for ATEX/IECEx Zone 1 and Zone 2 installations, extending the probe’s applicability to upstream oil and gas environments.
• Redundant System Architecture Support: The probe’s low output impedance allows parallel connection to redundant Proximitor® sensors in dual-channel voting configurations (1oo2, 2oo2) used in safety-instrumented systems per IEC 61511.
• Long-Term Parts Availability: As a current-production Bently Nevada component, the 330103-00-24-10-01-00 is available through established supply channels, supporting long-term maintenance planning for assets with 20–30 year operational lifespans.

Quality Assurance & Global Logistics

Every unit of the 330103-00-24-10-01-00 supplied by siemensplc.com is sourced as genuine Bently Nevada (Baker Hughes) OEM hardware. Prior to shipment from our Xiamen, China facility, each unit undergoes a structured pre-shipment inspection protocol:

• Part number and label verification against OEM documentation to confirm SKU authenticity.
• Visual inspection of probe tip, housing, cable jacket, armor braid, and connector for mechanical integrity.
• Impedance continuity check on the probe coil circuit to confirm electrical integrity of the integral cable assembly.
• Anti-static, foam-lined packaging with individual serialization and traceability documentation included in each shipment.

All units are covered by a 12-month warranty from the date of shipment. Xiamen is a designated free-trade port with direct air freight connections to major industrial hubs in Southeast Asia, the Middle East, Europe, and the Americas. Standard export documentation — commercial invoice, packing list, and certificate of origin — is provided with every international order. Expedited DHL, FedEx, and UPS services are available for urgent requirements, with typical transit times of 3–7 business days to most destinations. For large-volume orders, sea freight consolidation from Xiamen Port is available with full customs clearance support.

Contact Information

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