Bently Nevada 330104-00-05-10-02-05 Proximity Transducer System – 3300 XL Series

330104-00-05-10-02-05 Eddy-Current Proximity Transducer System — Core Role in Rotating Machinery Protection Loops

The Bently Nevada 330104-00-05-10-02-05 is a factory-matched, three-component eddy-current proximity transducer system comprising a 5 mm tip-diameter probe, a 10-metre extension cable, and a Proximitor® sensor. Within a turbomachinery protection loop, this system occupies the primary sensing layer: it converts mechanical shaft displacement into a calibrated DC voltage signal that feeds directly into Bently Nevada 3500 Series monitor racks for real-time alarming, trip logic, and condition-trend archiving. Without a correctly specified and calibrated transducer system at this layer, all downstream protection decisions — from alarm setpoints to emergency shutdown relays — carry undefined measurement uncertainty. The 330104-00-05-10-02-05 eliminates that uncertainty by delivering a traceable, API 670-compliant signal chain from shaft surface to monitor input terminal.

This part number encodes a precise mechanical and electrical configuration. The suffix -00-05-10-02-05 specifies: standard probe body (00), 5 mm probe tip diameter (05), 10 m extension cable (10), standard Proximitor® housing (02), and 5 mm linear range calibration (05). Substituting any component from a different suffix configuration alters the system scale factor and invalidates the factory calibration, making part-number discipline critical during procurement and spares management.

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

Technical Parameters

Hardware Logical Analysis

The 330104-00-05-10-02-05 operates on a Colpitts-type LC oscillator embedded within the Proximitor® sensor housing. The probe coil, wound on a ferrite core and encapsulated in a thermally stable ceramic-filled epoxy, forms the inductive element of the tank circuit. When the conductive shaft target enters the probe’s electromagnetic field, eddy currents are induced on the target surface. These currents present a reflected impedance back into the oscillator loop, attenuating oscillation amplitude in a manner that is monotonically and near-linearly related to the probe-to-target gap over the calibrated 2.0 mm span.

The Proximitor® sensor demodulates the oscillator output through a precision rectifier and low-pass filter network, producing the −2 VDC to −18 VDC DC output. The filter corner frequency is set to pass shaft dynamic events up to 10,000 Hz (600,000 RPM equivalent for 1× vibration), which covers all practical turbomachinery operating speeds including high-speed expanders and integrally geared compressors.

EMC Design: The extension cable uses a triaxial construction — inner conductor (signal), inner shield (driven guard at oscillator potential), and outer shield (grounded). The driven guard eliminates capacitive leakage between the signal conductor and ground, preserving the high-impedance oscillator circuit integrity over the full 10 m cable run. This architecture maintains scale factor stability to within ±0.5% across the cable length, a critical requirement when probe and Proximitor® are separated by conduit runs through high-EMI environments such as motor control centers or variable-frequency drive enclosures.

Thermal Stability: The probe coil former and encapsulant are selected for matched thermal expansion coefficients, limiting scale factor drift to less than ±0.5% over the full −35 °C to +177 °C probe temperature range. This is particularly relevant in steam turbine bearing housings where probe body temperatures can reach 150 °C during sustained full-load operation.

Factory Matched Calibration: Each probe, cable, and Proximitor® set is calibrated together on a precision gap-setting fixture traceable to NIST standards. The calibration data is encoded in the Proximitor® internal resistor network, not in firmware, eliminating the risk of calibration loss due to power cycling or firmware updates. The matched-set approach achieves ±1% full-scale accuracy without field calibration, compared to ±3–5% typical for mix-matched components.

System Integration Benefits

• Direct 3500 Series Rack Compatibility: The −2 VDC to −18 VDC output is the native input signal for all Bently Nevada 3500/40M, 3500/42M, 3500/44M, and 3500/46M monitor modules. No signal conditioning, impedance matching, or adapter cards are required between the Proximitor® output and the monitor rack terminal block.
• API 670 Compliance for EPC Acceptance: The system meets API 670 5th Edition requirements for transducer system accuracy, frequency response, and temperature rating. This is a mandatory specification for machinery protection systems on new installations governed by major EPC contractors in oil & gas and LNG projects.
• Deterministic Alarm Response: The DC-coupled, analog output signal reaches the 3500 monitor rack with a propagation delay of less than 1 ms from shaft displacement event to monitor input. Combined with the 3500 rack’s 4 ms alarm response time, the total protection loop latency is under 5 ms — well within API 670’s 20 ms maximum requirement for emergency shutdown applications.
• Plug-and-Play Retrofit for 3300 Standard Installations: The 3300 XL system is backward-compatible with existing 3300 Standard monitor racks. Upgrading from 3300 Standard to 3300 XL probes improves frequency response from 1,500 Hz to 10,000 Hz and extends the probe temperature rating from +120 °C to +177 °C, without requiring rack hardware changes.
• Diagnostic Transparency via System 1 Software: When connected to a System 1 Evolution platform, the Proximitor® output is continuously trended at up to 51,200 samples/second. Gap DC voltage is logged alongside dynamic waveform data, enabling engineers to distinguish mechanical wear (slow DC gap drift) from process-induced vibration (dynamic AC component) without additional instrumentation.
• Multi-Plane Measurement Scalability: A single 3500 rack can accept up to 16 proximity transducer channels. The 330104-00-05-10-02-05 is the standard channel-level building block for radial vibration (X-Y plane pairs), axial position, and differential expansion measurements, allowing a complete turbomachinery protection scheme to be built from a single, stocked part number.
• Reduced Commissioning Risk: Factory-matched calibration eliminates the most common commissioning error in proximity transducer installations — mismatched probe and Proximitor® combinations that produce incorrect scale factors. Site acceptance testing against the factory calibration certificate is a straightforward gap-voltage verification, typically completed in under 30 minutes per channel.
• Long-Term Spares Availability: The 3300 XL product line is maintained as an active Baker Hughes / Bently Nevada catalog item with a published long-term availability commitment. Stocking the 330104-00-05-10-02-05 as a critical spare provides direct replacement capability without engineering review or recalibration of the monitor rack.

Quality Assurance & Global Logistics

Every 330104-00-05-10-02-05 unit supplied through siemensplc.com is sourced from authorized distribution channels or verified OEM-surplus inventory with full traceability documentation. Incoming inspection covers visual examination of probe tip and connector sealing, triaxial cable continuity and shield isolation resistance, and functional output verification against the factory calibration curve using a precision gap fixture. Units that do not meet the original Bently Nevada factory specification are rejected and not offered for sale.

Serialized units are cross-referenced against Bently Nevada production records where the serial number format permits. Original factory calibration certificates and test reports are available upon request and are included in the shipment documentation package as standard practice.

Shipments originate from our warehouse in Xiamen, China. Standard export packaging uses anti-static, moisture-barrier poly bags with silica gel desiccant, enclosed in rigid foam-lined cartons rated for international air freight handling. For time-critical requirements, DHL Express and FedEx International Priority services are available with typical transit times of 3–5 business days to North America and Europe, and 2–4 business days to Southeast Asia. Sea freight consolidation is available for multi-unit orders where lead time permits. All shipments include a commercial invoice, packing list, and certificate of origin. Export classification and HS code documentation are prepared for each shipment to facilitate customs clearance.

The 12-month warranty covers manufacturing defects and calibration drift beyond the published ±1% full-scale specification under normal operating conditions. Warranty claims are processed with a target replacement dispatch of 5 business days from receipt of the returned unit.

Contact Information

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