Bently Nevada 330192-10-80-90-05 | 3300 XL Proximitor Probe for Shaft Displacement Measurement

330192-10-80-90-05: Product Overview​

This component is a Proximitor probe within the 3300 XL Proximity Transducer System, designed for non-contact measurement of shaft displacement, vibration, and position in rotating machinery. In an automation system, it serves as the primary sensing element, mounted directly on machine casings to monitor ferrous targets (e.g., turbine shafts, compressor rotors). It operates by generating a high-frequency electromagnetic field; when a target approaches, eddy currents alter the coil impedance, producing a voltage output proportional to displacement. The 3300 XL system, known for its precision and reliability, integrates this probe with Proximitor signal conditioners (e.g., 330180) and monitoring modules (e.g., 3500/42M) to provide data for condition-based maintenance and protection systems (DCS/SIS). This probe enables accurate trending of wear, imbalance, or misalignment—critical for preventing unplanned downtime in high-value assets.

330192-10-80-90-05: Technical Specifications​

Core Features & Customer Value​

Precision Measurement Accuracy: The probe’s linear output (-18V to -2V) and 1V/5mm sensitivity ensure high-resolution data for detecting minute displacements (e.g., 0.1mm shaft shifts). For engineers, this enables early identification of bearing wear or rotor bow, supporting predictive maintenance programs that reduce repair costs.

Robust Environmental Tolerance: With an operating temperature range of -34°C to +177°C, the probe withstands extreme conditions near turbine casings or compressor skids. The M8x1.25 thread and 10-inch length provide flexibility for mounting in tight spaces, minimizing mechanical interference with rotating parts.

Seamless System Integration: As part of the 3300 XL family, the probe is compatible with all 3300-series Proximitors and 3500 monitoring modules. The 7-pin Micro connector ensures secure, quick-connect wiring, reducing installation time. For procurement managers, this standardization simplifies inventory and spares planning.

Low Maintenance Design: The non-contact eddy current principle eliminates mechanical wear, unlike contact-based sensors. The FEP-insulated cable resists oil, moisture, and abrasion—critical for paper mills or refineries with harsh environments.

Typical Applications​

This probe is deployed in scenarios requiring precise shaft displacement monitoring. In steam turbines, it measures journal bearing clearance to detect wear; in centrifugal compressors, it tracks thrust collar position to prevent rotor contact. Hydroelectric generators use it to monitor runner blade clearance, while gas turbines employ it for rotor bow detection during startup. The 10-inch length suits large machines with deep bearing housings, such as those in petrochemical plants or power generation facilities. Its compatibility with 3500/42M monitors allows integration into existing Bently Nevada protection systems, providing a unified view of machine health.