Bently Nevada 330104-00-03-10-02-00 Proximity Transducer System – 3300 XL

Bently Nevada 330104-00-03-10-02-00 — 8 mm Eddy-Current Proximity Transducer System in the 3300 XL Architecture

The 330104-00-03-10-02-00 is an 8 mm eddy-current proximity transducer probe within Bently Nevada’s 3300 XL Series, configured with a 3-metre integral cable, standard coaxial connector, and a -18 VDC output chain. Its function inside a machinery protection loop is unambiguous: it converts the physical gap between the probe tip and a conductive target surface into a proportional DC voltage, delivering continuous, non-contact displacement data to a Proximitor® sensor and, ultimately, to a 3500 Series monitoring rack. The measurement chain operates without mechanical contact, which eliminates wear-induced drift and makes the system suitable for continuous, unattended operation across multi-year maintenance intervals.

In a typical radial vibration channel, two 330104-00-03-10-02-00 probes are mounted 90° apart in the bearing housing. The differential signal between the X and Y planes allows the monitoring system to reconstruct the shaft orbit — a two-dimensional trajectory of the shaft centerline that encodes imbalance, misalignment, oil-whirl, and rub signatures with sub-micron fidelity. For axial position monitoring, a single probe is oriented parallel to the shaft axis, tracking thrust collar displacement against a defined datum. The -00-03-10-02-00 suffix encodes: 3 m cable length, 10-32 UNF connector, standard temperature rating, and armored cable jacket — parameters that must be matched precisely when specifying replacement units to maintain calibration traceability.

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

Technical Parameters

Hardware Logical Analysis

The 330104-00-03-10-02-00 operates on the principle of electromagnetic induction loss. The Proximitor® sensor drives a high-frequency oscillator — typically in the 1 MHz range — through the coaxial cable to the probe coil. When the probe tip approaches a conductive target, eddy currents are induced on the target surface, loading the oscillator and reducing its amplitude. The Proximitor’s demodulation circuit converts this amplitude change into a linear DC voltage output. The entire signal chain from probe coil to output terminal is a closed-loop impedance-matching network, which is why the 3300 XL system is not interchangeable with arbitrary third-party probes without recalibration — the cable length, coil inductance, and Proximitor gain constants are factory-matched as a system.

EMC Design: The armored cable jacket provides a continuous Faraday shield from the probe body to the Proximitor enclosure, suppressing radiated interference from variable-frequency drives, high-current bus bars, and RF sources common in industrial switchgear rooms. The coaxial geometry maintains a controlled characteristic impedance along the 3 m run, preventing standing-wave reflections that would introduce measurement error at high shaft speeds (above 3,000 RPM, where vibration harmonics extend into the kHz range).

Thermal Stability: The probe coil is wound on a ceramic former with a low thermal coefficient of inductance. Over the −35 °C to +121 °C operating range, scale factor drift is specified at less than ±0.5% of full scale — a figure that matters in steam turbine bearing housings where ambient temperature can swing 80 °C between cold start and full-load operation. The stainless steel probe body resists thermal expansion mismatch with the mounting boss, preserving the mechanical gap datum across thermal cycles.

Intrinsic Safety Architecture: The ATEX II 1G Ex ia IIC T4 rating means the probe and cable are certified as associated apparatus in an intrinsically safe circuit. The Proximitor limits the energy available at the probe tip to below the ignition threshold for Group IIC gases (hydrogen, acetylene). This architecture allows the probe to be installed in Zone 0 hazardous areas — inside compressor casings or turbine enclosures — without conduit seals or explosion-proof housings, reducing installation cost and maintenance complexity.

System Integration Benefits

• Direct 3500 Rack Compatibility: The −18 VDC output maps directly to the input range of Bently Nevada 3500/40M, 3500/42M, and 3500/45 monitor modules without signal conditioning adapters, preserving the factory-calibrated scale factor end-to-end.
• Shaft Orbit Reconstruction: Paired X-Y installations at 90° separation feed the 3500 rack’s orbit display function, enabling real-time visualization of shaft centerline trajectory — a diagnostic capability that distinguishes imbalance (circular orbit) from misalignment (elliptical orbit) and rub (truncated orbit) without machine shutdown.
• DC Gap Monitoring for Axial Position: The DC component of the output voltage tracks slow axial shaft migration with a resolution of approximately 0.13 mm (5 mil) per volt, sufficient to detect thrust bearing wear before the clearance limit is reached.
• System 1® Software Integration: The probe’s output feeds directly into Bently Nevada System 1® Evolution for trend logging, alarm setpoint management, and spectral analysis. Historical gap and vibration data can be correlated with process variables (load, speed, temperature) to build machine-specific baseline models.
• Deterministic Response Time: The eddy-current measurement chain has no moving parts and no thermal mass in the signal path. Response time from physical displacement to output voltage change is governed by the Proximitor’s demodulation filter bandwidth — typically set to 10 kHz — ensuring that transient events such as blade-pass excitation or rub initiation are captured without phase lag distortion.
• Redundant Channel Architecture: In API 670-compliant installations, two independent probes per measurement plane allow the monitoring system to implement 2-out-of-2 (2oo2) voting logic for trip decisions, eliminating spurious shutdowns from single-channel faults while maintaining protective integrity.
• Diagnostic Transparency via OK Circuit: The Proximitor continuously monitors the probe circuit impedance. If the cable is open-circuited, short-circuited, or the probe is driven out of its linear range, the OK relay de-energizes and the monitor channel enters a defined fault state — providing unambiguous diagnostic feedback to the DCS without requiring manual inspection.
• Minimal Footprint Installation: The 8 mm probe diameter and M10 × 1.0 thread form allow installation in compact bearing housings where larger probe formats cannot be accommodated. The 3 m cable length covers the majority of standard turbomachinery installations without extension cable splices, which are a common source of impedance discontinuity and measurement error.

Quality Assurance & Global Logistics

Every 330104-00-03-10-02-00 unit supplied by siemensplc.com is sourced from verified Bently Nevada (Baker Hughes) authorized distribution channels. Each unit arrives with original OEM labeling, date code, and certification markings intact. Before dispatch, our technical team performs a three-stage verification: part number and suffix code confirmation against the purchase order, visual inspection of the probe tip, cable jacket, and connector for transit damage, and documentation cross-check of the ATEX/FM certificate number against the unit’s label.

Shipments originate from our warehouse in Xiamen, China — a major export hub with direct access to international freight forwarders serving North America, Europe, the Middle East, and Southeast Asia. Standard export documentation includes commercial invoice, packing list, certificate of origin (Form A or CO as required), and MSDS where applicable. For time-critical plant shutdowns, we offer DHL Express and FedEx Priority services with typical transit times of 3–5 business days to most destinations. Bulk orders are consolidated and shipped via air freight or sea freight depending on volume and urgency. All shipments are fully insured and tracked from dispatch to delivery confirmation.

A 12-month warranty covers manufacturing defects under normal operating conditions. Warranty claims are processed with replacement unit dispatch within 5 business days of fault confirmation, minimizing plant downtime exposure.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
© 2026 siemensplc.com. All rights reserved.