The Bently Nevada 3300 XL 50 mm Proximity Transducer System is engineered for mission-critical industrial applications requiring an extended linear range, specifically for measuring Differential Expansion (DTE) in large steam turbine generators. This eddy current sensor system delivers a massive 27.9 mm (1100 mils) linear range, surpassing standard 8 mm or 25 mm probes in tracking axial thermal growth between the machine casing and rotor. Designed for seamless integration with 3500/40 Monitoring Systems, the 3300 XL 50 mm series features a ruggedized probe construction and specialized Proximitor® sensors that maintain high-frequency response and exceptional scale factor stability. Our inventory includes various probe lengths, extension cables, and mounting hardware that fully comply with API 670 requirements, ensuring high-accuracy vibration and position monitoring in the most demanding turbomachinery environments.