The 330878-90-05 Bently Nevada 3300 XL 50 mm Proximitor Sensor is a high-performance 3300 XL 50 mm Proximitor Sensor designed for precise measurement of differential expansion and rotor movement in large steam turbine generators. It is part of the 3300 XL 50 mm Transducer System, which includes a 50 mm probe and an extension cable. The large-diameter coil of the BENTLY NEVADA 330878-90-05 provides a maximum linear range of 27.9 mm (1100 mils), the longest in Bently Nevada’s eddy current transducer line, making it ideal for monitoring differences in growth rates between turbine rotors and machine stators.

The 330878-90-05 Proximitor Sensor Bently Nevada allows accurate differential expansion measurements using two proximity transducers to observe a collar or ramp near the thrust bearing. Depending on the installation requirements, the transducers can be mounted on the same side of the collar for ranges under 27.9 mm or in a complementary fashion to measure up to 56 mm (2.2 inches). This flexibility ensures reliable monitoring across various machine configurations and operational conditions.

Designed for industrial reliability, the 3300 XL 50MM PROXIMITOR SENSOR 330878-90-05 supports robust signal transmission and stable performance in demanding turbine environments. Its compatibility with standard extension cables and probes ensures seamless integration into existing 3300 XL systems, simplifying maintenance and component replacement while maintaining measurement accuracy.

The Bently Sensor 330878-90-05 is a fully compliant, panel-mount transducer that meets multiple approvals for industrial applications. Its durable construction and extended linear range make it essential for turbine monitoring, rotor protection, and predictive maintenance, delivering dependable performance in critical machinery applications.