Bently Nevada 330103-00-14-10-01-00 Proximity Probe – 3300 XL Series

Bently Nevada 330103-00-14-10-01-00 — 8mm Eddy-Current Proximity Probe in the 3300 XL Machinery Protection Architecture

The 330103-00-14-10-01-00 is an 8 mm eddy-current proximity probe manufactured by Bently Nevada (a Baker Hughes company) and designed as a primary sensing element within the 3300 XL continuous machinery protection platform. Its function within a control loop is unambiguous: it converts the physical gap between the probe tip and a conductive target surface into a proportional DC voltage signal, which downstream signal conditioning hardware — specifically the 3300 XL Proximitor® sensor — translates into calibrated displacement data. This displacement data feeds directly into the 3500 Machinery Protection System for real-time threshold comparison, alarm generation, and trip relay actuation. In rotating machinery applications — gas turbines, steam turbines, centrifugal compressors, and high-speed pumps — the probe operates as the first node in a deterministic protection chain where measurement latency and signal fidelity are non-negotiable engineering constraints.

The 14-inch integral cable configuration of this part number positions the probe body at a fixed standoff from the junction box or field wiring enclosure, eliminating an intermediate connector that would otherwise introduce impedance discontinuity and potential ingress points in high-vibration environments. The 3/8-24 UNF thread allows precise axial positioning within a machined probe holder, enabling the installer to set the initial gap within the linear operating range of 80 mil (2.03 mm) with repeatable torque-controlled installation.

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

Technical Parameters

Hardware Logical Analysis

The operating principle of the 330103-00-14-10-01-00 is grounded in Faraday’s law of electromagnetic induction. The probe tip houses a wound coil driven by a high-frequency oscillator (nominally 1.0 MHz) embedded within the paired Proximitor® sensor. This oscillator generates an alternating magnetic field that projects axially from the probe face. When a conductive target enters this field, eddy currents are induced on the target surface, loading the oscillator circuit and reducing the amplitude of oscillation in direct proportion to the gap distance. The Proximitor® demodulates this amplitude-modulated signal and outputs a linear DC voltage — the core measurement signal.

The 8 mm tip diameter is a deliberate mechanical design choice. Compared to the 5 mm variant (330101 series), the larger coil geometry produces a deeper and more uniform field penetration, which extends the linear measurement range to 80 mil and reduces sensitivity to minor surface irregularities such as machining marks or minor shaft runout artifacts. This makes the 330103 series the preferred selection for large-diameter shaft applications where target surface quality may vary across the measurement zone.

EMC performance is addressed at the cable level. The integral armored cable acts as a coaxial shield, maintaining a controlled characteristic impedance between the probe coil and the Proximitor® input stage. Any break in this shielding — such as an improperly mated extension cable connector — introduces a capacitive discontinuity that shifts the resonant frequency of the oscillator circuit, producing a calibration offset that cannot be corrected in software. The integral 14-inch cable of this part number eliminates one such potential discontinuity point compared to shorter-cable variants that require an extension cable to reach the junction box.

The stainless-steel probe body provides both mechanical rigidity and corrosion resistance in environments where process fluids, steam, or condensate may contact the probe housing. The 3/8-24 UNF thread pitch allows fine axial adjustment during installation — each full rotation advances the probe 1/24 inch (1.058 mm), giving the installer sub-millimeter gap control without requiring specialized tooling beyond a calibrated gap-setting gauge.

System Integration Benefits

• Direct compatibility with 3500 MPS: The 330103-00-14-10-01-00 is factory-calibrated to the 3300 XL signal chain. When paired with a 330180-series Proximitor® and connected to a 3500/40M or 3500/42M monitor, no field calibration adjustment is required — the system recognizes the probe scale factor from the Proximitor® configuration and applies the correct engineering unit conversion automatically.
• Deterministic alarm response: The DC output signal from the Proximitor® is a continuous analog voltage with no sampling latency. The 3500 monitor scans this input at its full hardware rate, ensuring that a step-change in shaft position — such as a sudden bearing failure event — is detected and acted upon within the monitor’s specified response time, typically under 20 ms for trip-class channels.
• Dual-measurement capability: A single probe installation can simultaneously provide radial vibration (AC component, filtered above 10 Hz) and average shaft centerline position (DC component) to the monitor. This eliminates the need for separate sensors for dynamic and static displacement measurement on the same measurement plane.
• Diagnostic transparency via System 1: When integrated with Bently Nevada System 1 software, the probe’s output contributes to orbit plots, shaft centerline plots, and Bode/Nyquist diagrams. These diagnostic views allow rotating machinery engineers to distinguish between mechanical looseness, misalignment, oil whirl, and rub conditions without removing the machine from service.
• Redundant voting architecture support: In 2oo3 (two-out-of-three) voting protection configurations, three probes are installed at 120° intervals on the same measurement plane. The 330103-00-14-10-01-00’s consistent scale factor across units — held to ±1% by factory calibration — ensures that the voting logic operates on signals with matched gain, preventing false trips caused by inter-channel sensitivity mismatch.
• High-temperature field deployment: The rated operating range of −35°C to +177°C covers the majority of industrial rotating machinery environments, including steam turbine bearing housings where ambient temperatures routinely exceed 120°C. No derating of the linear range or scale factor is required within this temperature band.
• Non-intrusive installation: Because the probe operates on eddy-current principles, it requires no physical contact with the rotating shaft. There is no wear mechanism, no lubrication requirement, and no periodic replacement interval driven by mechanical fatigue — the probe’s service life is limited only by cable integrity and connector condition.
• Standardized spare parts management: The 330103-00-14-10-01-00 is a widely deployed part number across global petrochemical, power generation, and LNG facilities. Maintaining a small buffer stock of this probe eliminates the risk of extended machinery downtime caused by probe failure during a planned or unplanned maintenance window.

Quality Assurance & Global Logistics

Every unit of the 330103-00-14-10-01-00 supplied through siemensplc.com is sourced from verified industrial distribution channels with full lot traceability. Prior to dispatch, each probe undergoes a four-stage verification process: source documentation review, physical inspection of the probe tip, cable jacket, and connector integrity, cross-reference against Bently Nevada published datasheet parameters, and secure anti-static packaging with tamper-evident sealing.

Shipments originate from our Xiamen, China operations center, with access to major international freight carriers including DHL Express, FedEx International Priority, and UCP air freight consolidation services. Standard delivery to Southeast Asia, the Middle East, and Europe typically falls within 3–7 business days from order confirmation. Expedited same-day dispatch is available for orders confirmed before 14:00 CST. All international shipments are accompanied by a commercial invoice, packing list, and certificate of origin. Export compliance screening is applied to every order in accordance with applicable trade control regulations.

Volume procurement inquiries — including blanket orders, consignment stock arrangements, and multi-site supply agreements — are handled directly by our technical sales team. A 12-month warranty against manufacturing defects applies to all units under rated operating conditions.

Contact Information

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