Bently Nevada 330104-13-20-50-02-00 Ruggedized Proximity Probe

Product Overview

Bently Nevada 330104-13-20-50-02-00 Ruggedized Eddy-Current Proximity Probe: Industrial Resilience for Harsh Environments

The Bently Nevada 330104-13-20-50-02-00 is a precision eddy-current proximity probe engineered for continuous, non-contact vibration and position measurement in the most demanding industrial environments. Part of the renowned Bently Nevada 3300 XL Series, this 5-metre armored-cable probe is purpose-built to deliver reliable shaft displacement and vibration data where conventional sensors fail — in high-temperature furnace areas, high-humidity coastal plants, dust-laden mining galleries, and electromagnetically noisy motor control rooms.

Designed to interface directly with Bently Nevada 3300 XL proximitor/seismic transducer modules, the 330104-13-20-50-02-00 forms the sensing front-end of a complete machinery protection system. Its armored cable construction resists mechanical abrasion, chemical exposure, and rodent damage, while the probe tip’s stainless-steel housing maintains calibration stability across wide temperature swings. Whether mounted on a steam turbine bearing housing, a compressor shaft journal, or a large induction motor drive end, this probe delivers the micron-level resolution that rotating machinery protection demands.

Rugged Specifications Table

Comprehensive Protection Solutions

The 330104-13-20-50-02-00 proximity probe does not operate in isolation — it is the field-sensing element of a layered machinery protection architecture. In a typical turbomachinery protection panel, this probe pairs with the Bently Nevada 330180-X1-05 3300 XL Proximitor, which conditions the raw eddy-current signal into a calibrated voltage output readable by the plant’s safety and control systems. That conditioned signal feeds into a Bently Nevada 3500/42M Proximitor I/O Module, part of the 3500 Series rack-based machinery protection system, where it is compared against alarm and danger setpoints in real time.

Within the same control cabinet, the 3500 rack typically houses a Bently Nevada 3500/15 Power Supply Module to provide clean, regulated DC power to all transducer channels — critical in environments where utility power quality is poor or subject to voltage sags from large motor starts. Alongside vibration monitoring, plants often deploy Bently Nevada 330130 Series Velocity Seismic Transducers on bearing housings to capture absolute casing vibration, complementing the shaft-relative data from the 330104-13-20-50-02-00 probe.

For facilities running Emerson DeltaV DCS or a Rockwell Automation ControlLogix PLC as the primary process controller, the 3500 rack communicates over Modbus RTU or Modbus TCP/IP to relay vibration, position, and alarm status to the supervisory layer — enabling integrated shutdown logic without additional signal converters. In hazardous-area installations classified as Zone 1 or Zone 2 (ATEX/IECEx), the probe cable is routed through Pepperl+Fuchs or MTL Zener barrier or galvanic isolator modules to maintain intrinsic safety compliance, protecting both personnel and equipment in the presence of flammable gases or combustible dust.

Power distribution within the control cabinet is typically managed by a Phoenix Contact QUINT or TRIO 24 VDC DIN-rail power supply, ensuring the proximitor modules receive stable, low-ripple supply voltage even during grid disturbances. Terminal connections between field cables and panel wiring are made via Phoenix Contact or Weidmüller spring-clamp terminal blocks, which maintain reliable contact under vibration — a common failure point in heavy-industry environments that this armored-cable probe is designed to survive.

Application in Critical Infrastructure

The Bently Nevada 330104-13-20-50-02-00 is a proven workhorse across the full spectrum of critical industrial infrastructure:

Oil & Gas: Installed on centrifugal compressors, gas turbines, and pipeline booster pumps at upstream production platforms and midstream compression stations. The armored cable withstands hydrocarbon condensate, H₂S-laden atmospheres, and the mechanical vibration inherent to reciprocating compressor skids. API 670-compliant installations rely on this probe series as the primary radial vibration sensor for machinery trip protection.

Power Generation: Steam turbine-generators at coal-fired, gas-fired, and combined-cycle power plants use 3300 XL proximity probes to monitor shaft eccentricity during startup and radial vibration during full-load operation. A single undetected bearing failure in a 300 MW turbine can result in catastrophic rotor damage; the 330104-13-20-50-02-00 provides the continuous, high-resolution data that prevents such events.

Mining & Minerals Processing: Large ball mills, SAG mills, and slurry pumps in copper, iron ore, and gold processing plants operate in environments saturated with abrasive dust and moisture. The IP67-rated probe body and armored cable maintain measurement integrity where unprotected sensors fail within weeks.

Metallurgy & Steel: Rolling mill drive trains, continuous caster pinch rolls, and blast furnace blower turbines generate intense electromagnetic interference from large variable-frequency drives and arc furnace transformers. The shielded, armored construction of the 330104-13-20-50-02-00 rejects this interference, delivering clean vibration signals to the protection system.

Water & Wastewater: High-speed centrifugal pumps and blowers at municipal water treatment facilities benefit from continuous vibration monitoring to schedule predictive maintenance, avoiding unplanned outages that disrupt water supply to communities.

Security & Quality FAQ

Q1: What warranty does the 330104-13-20-50-02-00 carry?
Every unit shipped by TOPNLMS carries a 12-month warranty from the date of shipment. If the probe fails under normal operating conditions within this period, we provide a replacement or full refund. Our warranty covers manufacturing defects and premature failure — not damage caused by incorrect installation gap, target material mismatch, or physical impact.

Q2: How is each unit tested before shipment?
All Bently Nevada 330104-13-20-50-02-00 probes in our inventory undergo pre-shipment functional verification: cable continuity check, coaxial connector integrity inspection, and visual examination of the probe tip and armored jacket. Units showing any sign of tip damage, cable kinking, or connector corrosion are quarantined and not shipped. We issue a test report upon request for critical-application orders.

Q3: Is this probe compatible with my existing 3300 XL proximitor and 3500 rack?
Yes. The 330104-13-20-50-02-00 is a standard 3300 XL series probe and is fully compatible with all Bently Nevada 3300 XL Proximitor modules (330180 series) and the 3500 Series machinery protection rack I/O modules. It is also backward-compatible with legacy 3300 Series proximitors. If you are replacing a probe from a different cable-length variant (e.g., 330104-13-20-25-02-00 for 2.5 m), the electrical characteristics are identical — only the cable length differs.

Q4: Can you support long-term or repeat procurement for maintenance programs?
Absolutely. TOPNLMS maintains standing inventory of the 330104-13-20-50-02-00 and related 3300 XL series components to support planned maintenance shutdowns, insurance spare programs, and emergency breakdown replacements. We offer priority allocation for customers with annual maintenance contracts and can provide advance shipment notification (ASN) documentation for ERP-integrated procurement teams. Contact us to discuss volume pricing and consignment stock arrangements.