Bently Nevada 330104-00-14-10-02-CN Proximity Probe for 3300 Series

Bently Nevada 330104-00-14-10-02-CN Proximity Probe for 3300 Series

In modern industrial automation and machinery protection systems, the integrity of the vibration monitoring layer is inseparable from the overall control architecture. The Bently Nevada 330104-00-14-10-02-CN proximity probe is not simply a sensing element — it is a precision-engineered component designed to operate as a fully integrated node within the Bently Nevada 3300 Series machinery protection platform. When deployed correctly, this probe contributes to system-wide signal consistency, redundancy capability, and long-term maintenance efficiency across the entire monitoring hierarchy.

The 330104-00-14-10-02-CN is a 14 mm diameter, 1.0 m cable, 2.0 m extension cable, non-contact eddy-current proximity probe rated for use with the 3300 XL series transducer system. Its output signal is conditioned to interface directly with the 3300 XL 8mm proximitor extension driver, enabling seamless signal transmission from the rotating machinery to the monitoring rack without signal degradation or impedance mismatch. This direct compatibility eliminates the need for signal conversion modules and reduces potential failure points in the measurement chain.

Within a layered automation architecture, this probe occupies the field sensing layer — the foundation upon which all higher-level decisions are made. The raw displacement signal it generates is transmitted through the extension cable to the proximitor, then routed into the 3300 Series monitor rack, where modules such as the 3300/16 Dual Voting Logic Monitor or the 3300/20 Radial Vibration Monitor process the data in real time. These monitors communicate upstream to the plant DCS or safety instrumented system (SIS) via hardwired relay outputs or digital communication protocols, ensuring that machinery protection decisions are made with the lowest possible latency.

Product Specification Table

System Compatibility Notes

The 330104-00-14-10-02-CN achieves its full value only when considered as part of a coordinated machinery protection and control system. In a typical turbomachinery protection architecture, this probe is installed in pairs — one for X-axis and one for Y-axis radial vibration measurement — and paired with a Bently Nevada 330180-X1-05 3300 XL 8mm Proximitor mounted in the field junction box. The proximitor conditions the raw eddy-current signal and transmits a calibrated voltage output to the monitor rack.

At the rack level, the signal enters a Bently Nevada 3300/16 Dual Voting Logic Monitor or a 3300/20 Radial Vibration Monitor, which applies alert and danger setpoints. These monitors are housed in a 3300 Series Rack — typically a 19-inch DIN-rail or panel-mount enclosure — alongside complementary modules such as the 3300/55 Keyphasor Module, which provides a once-per-revolution reference signal essential for phase analysis and balancing diagnostics. The Keyphasor signal is shared across multiple monitor channels, enabling synchronized vibration analysis across all measurement planes.

Power to the rack is supplied by a Bently Nevada 3300/05 Power Supply Module, which accepts 115/230 VAC input and delivers regulated DC power to all installed monitor cards. For critical applications requiring continuous availability, a redundant power supply configuration is employed, with automatic switchover ensuring uninterrupted monitoring during a power module failure. This redundancy design is a core requirement in API 670-compliant machinery protection systems.

Communication from the 3300 Series rack to the plant control layer is typically achieved through hardwired relay contacts for trip and alert functions, supplemented by a Bently Nevada 3500/92 Communication Gateway or equivalent Modbus/TCP interface module that transmits vibration trend data to the plant historian or DCS. At the operator interface layer, a System 1 Condition Monitoring Software workstation aggregates data from multiple 3300 racks, providing fleet-wide vibration trending, alarm management, and predictive maintenance analytics. This software layer transforms raw proximity probe data into actionable maintenance intelligence, closing the loop between field sensing and engineering decision-making.

For installations requiring position monitoring in addition to vibration — such as axial thrust position on a steam turbine — the same 3300 Series rack accommodates a 3300/25 Thrust Position Monitor, which accepts signals from a dedicated axial proximity probe pair. This modular architecture allows a single rack to provide comprehensive machinery protection coverage across radial vibration, axial position, speed, and phase measurement channels, all sharing a common power supply, communication bus, and relay output infrastructure.

Industrial Application Notes

The 330104-00-14-10-02-CN proximity probe is deployed across a wide range of heavy industrial applications where continuous, non-contact shaft monitoring is essential for process safety and equipment reliability.

In power generation facilities — including coal-fired, gas turbine, and combined-cycle plants — this probe monitors the radial vibration of steam turbine rotors and generator shafts. Any deviation beyond the alert setpoint triggers an alarm at the DCS operator station; a danger-level exceedance initiates an automatic turbine trip through the emergency trip system (ETS), preventing catastrophic bearing failure or rotor rub.

In petrochemical and refinery environments, the probe is installed on centrifugal compressors in ethylene, hydrogen, and LNG service. These machines operate continuously for multi-year run cycles, and the proximity probe system provides the only real-time indication of rotor dynamic behavior. The 3300 Series platform’s API 670 compliance ensures that the measurement system meets the mandatory machinery protection requirements for these hazardous-area applications.

In water treatment and pumping stations, large vertical turbine pumps and horizontal split-case pumps benefit from proximity probe monitoring to detect impeller imbalance, bearing wear, and hydraulic instability before they progress to failure. The compact 14 mm probe diameter of the 330104-00-14-10-02-CN makes it suitable for installation in confined bearing housings where larger probes cannot be accommodated.

In mining and mineral processing operations, ball mills, SAG mills, and large slurry pumps are monitored using 3300 Series proximity probe systems. The robust construction of the 330104-00-14-10-02-CN — with its high-temperature-rated probe tip and armored cable — ensures reliable operation in the dusty, high-vibration environments typical of mineral processing facilities.

In metallurgical and steel plant applications, rolling mill drive motors and compressor trains are monitored continuously. The proximity probe system’s ability to detect sub-millimeter shaft displacement changes enables maintenance teams to schedule bearing replacements during planned outages rather than responding to unplanned failures, significantly reducing production losses.

Product Compatibility FAQ

Q1: Is the 330104-00-14-10-02-CN directly compatible with all 3300 Series monitor modules, and does it require any signal conditioning adapters?

The 330104-00-14-10-02-CN is designed for use with the Bently Nevada 3300 XL 8mm proximitor system. It must be paired with a compatible 3300 XL proximitor (such as the 330180 series) to condition the eddy-current signal before it enters the monitor rack. The proximitor-probe combination is calibrated as a matched system; substituting non-OEM extension cables or proximitors may alter the scale factor and introduce measurement errors. No additional signal conditioning adapters are required when the correct proximitor is used within the 3300 Series rack architecture.

Q2: Can this probe be integrated into a redundant monitoring architecture, and what configuration is recommended for API 670 compliance?

Yes. For API 670-compliant radial vibration monitoring, a minimum of two proximity probes are installed per bearing plane — one at 0° and one at 90° (X-Y configuration). Each probe is connected to a dedicated monitor channel within the 3300 Series rack. For voting logic applications, the 3300/16 Dual Voting Logic Monitor processes signals from both channels and applies 1-of-2 or 2-of-2 voting logic for trip decisions, reducing both false trips and missed trips. Redundant power supply modules within the rack further enhance system availability. This configuration meets the redundancy and voting requirements specified in API Standard 670, Fifth Edition.

Q3: What does the 12-Month Warranty cover, and what support is available for installation and long-term maintenance?

The 12-Month Warranty covers manufacturing defects and functional failures under normal operating conditions from the date of shipment. It includes replacement or repair of the probe assembly if it fails to meet published specifications during the warranty period. For installation support, our technical team provides guidance on probe gap setting, cable routing, proximitor calibration verification, and integration with the 3300 Series monitor rack. For long-term maintenance, we recommend periodic gap verification during planned outages and cable inspection for abrasion or connector corrosion. Spare probe assemblies are available from stock to minimize downtime during unplanned replacements.

© 2026 ZYPLC. All rights reserved.
Original Source: https://zyplc.com
Contact: +86 19859288691 | plc.sales@zyplc.com