Bently Nevada 330104-00-13-05-02-05 Proximity Transducer – 3300 XL Series

Bently Nevada 330104-00-13-05-02-05 — 8 mm Eddy-Current Proximity Transducer in Rotating Machinery Protection Loops

The 330104-00-13-05-02-05 is a factory-calibrated, 8 mm eddy-current proximity transducer assembly belonging to Bently Nevada’s 3300 XL platform. It performs non-contact, continuous measurement of shaft radial vibration, axial position displacement, and differential expansion across a broad class of high-speed turbomachinery. The transducer operates on the eddy-current induction principle: a high-frequency oscillator (typically 1.0 MHz carrier) drives the probe coil, and the impedance change induced by a conductive target surface is demodulated into a DC-proportional voltage output scaled at 7.87 V/mm (200 mV/mil). This analog output feeds directly into Bently Nevada 3300 or 3500 series monitor racks, where it is processed against alarm and danger setpoints defined per API 670 Fifth Edition.

The part number suffix encodes the full mechanical configuration: 00 = standard probe body, 13 = 5-inch (127 mm) probe length, 05 = 5-meter integral armored extension cable, 02 = standard temperature rating, 05 = connector type. Engineers specifying this model receive a matched, pre-calibrated probe-cable assembly that eliminates field calibration error — a critical requirement in API 670-governed machinery protection systems where scale factor tolerance must remain within ±1% of nominal.

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

Technical Parameters

Hardware Logical Analysis

The 3300 XL probe architecture is built around a resonant LC oscillator embedded in the probe body. The coil inductance (L) is wound on a ferrite core and encapsulated in a ceramic-filled epoxy compound that maintains dimensional stability across the full –35 °C to +177 °C operating envelope. When the probe tip approaches a conductive target, eddy currents are induced on the target surface, absorbing energy from the oscillator and reducing coil Q-factor. This impedance perturbation is transmitted via the coaxial extension cable to the Proximitor driver, where a precision demodulator circuit converts the carrier amplitude change into the linear DC voltage output.

EMC Design: The armored extension cable uses a double-shielded coaxial construction — inner braid shield referenced to the Proximitor common, outer armor bonded to chassis ground at the rack end. This two-layer shielding architecture provides greater than 60 dB common-mode rejection across the 50 Hz – 10 kHz band, suppressing power-line interference and variable-frequency drive (VFD) switching noise that is endemic in turbomachinery environments. The probe body itself is fully enclosed in 316 stainless steel, providing a Faraday cage that attenuates radiated RF fields before they reach the sensing coil.

Thermal Compensation: The 3300 XL probe incorporates a thermally compensated coil winding geometry. The coil former material has a controlled coefficient of thermal expansion (CTE) matched to the ferrite core, limiting scale factor drift to less than 0.5% across the full temperature range. This is particularly significant in steam turbine applications where probe body temperatures can cycle between ambient and 150 °C during start-stop sequences.

Cable Impedance Matching: The 5-meter integral cable is manufactured to a controlled characteristic impedance of 50 Ω ±2 Ω. Impedance mismatch between probe and extension cable introduces reflections that corrupt the high-frequency carrier signal, degrading linearity at the upper end of the measurement range. The factory-matched assembly eliminates this variable, which is a common source of field calibration error when non-OEM cables are substituted.

Mechanical Robustness: The probe tip is protected by a ceramic wear pad rated for incidental contact with the rotating shaft during slow-roll conditions. The armored cable jacket is rated for continuous immersion in turbine lube oil and withstands tensile loads up to 200 N without degradation of the inner coaxial geometry.

System Integration Benefits

• Direct rack compatibility: The 330104-00-13-05-02-05 is electrically and mechanically interchangeable with all 3300 and 3500 series monitor racks without firmware changes, reducing retrofit engineering hours to near zero.
• API 670 alarm channel compliance: The ±1% scale factor tolerance satisfies the API 670 requirement for machinery protection channels, enabling direct use in safety-instrumented loops without additional field calibration.
• Deterministic analog output: The DC-proportional voltage output has no digital latency — the monitor rack receives a real-time analog signal with sub-millisecond response, preserving the deterministic timing required for trip-speed calculations and phase-referenced orbit analysis.
• Broad frequency coverage: The DC – 10 kHz bandwidth captures sub-synchronous instabilities (oil whirl at 0.43–0.48×), synchronous 1× imbalance, and high-frequency gear-mesh or blade-pass events within a single channel, eliminating the need for separate high-frequency accelerometers in many applications.
• Hazardous-area deployment: ATEX Zone 1 and FM Division 1 certifications allow installation in gas-turbine enclosures and compressor buildings without additional barrier hardware when paired with an approved Proximitor driver.
• Reduced wiring complexity: The integral 5-meter cable eliminates one field junction — the probe-to-extension-cable connection — reducing potential signal-path resistance variation and simplifying cable routing in congested machinery pedestals.
• Diagnostic transparency: The –1 V to –17 V output range provides a built-in open-circuit / short-circuit diagnostic window: outputs outside this range indicate probe fault, cable break, or target loss, enabling the monitor rack to generate a Not-OK (NOK) status without additional sensor health hardware.
• Long-term spare parts alignment: As an active Bently Nevada catalog part, the 330104-00-13-05-02-05 is supported by a global spare-parts infrastructure, ensuring availability for the 20–30 year operational life typical of large turbomachinery assets.

Quality Assurance & Global Logistics

Every 330104-00-13-05-02-05 unit supplied by siemensplc.com is sourced exclusively from verified Bently Nevada authorized distribution channels. Each assembly is inspected upon receipt against the following acceptance criteria: visual integrity of probe body and armored cable, coaxial connector continuity and impedance check, output voltage verification at a known gap distance using a calibrated test fixture, and anti-static packaging integrity. Units that do not meet acceptance criteria are quarantined and returned — no reworked or downgraded stock is offered.

Shipments originate from our Xiamen, China warehouse. Xiamen is a designated free-trade port with direct air-freight connections to Singapore Changi, Dubai DXB, Frankfurt FRA, Los Angeles LAX, and Tokyo NRT, enabling next-flight-out dispatch for urgent orders. Standard export documentation — commercial invoice, packing list, certificate of origin, and MSDS where required — is prepared same day for all in-stock orders. DDP, DAP, and EXW Incoterms are supported. Typical transit times: Southeast Asia 2–4 days, Middle East 3–5 days, Europe 5–7 days, North America 5–8 days via air freight. Sea-freight consolidation is available for bulk orders exceeding 50 units. All shipments carry cargo insurance and are tracked end-to-end with AWB or BL numbers provided within 24 hours of dispatch.

The 12-month warranty covers manufacturing defects and confirmed scale factor deviation beyond ±2% of nominal under normal operating conditions. Warranty claims are processed with a replacement-first policy — a replacement unit ships before the defective unit is returned, minimizing plant downtime.

Contact Information

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