The BENTLY NEVADA Proximitor Sensor 28V 140mA BAS99ATEX3100U 138493-01 is a high-performance 50mm transducer system designed for critical machinery monitoring in power generation applications. This system combines a large-diameter probe, extension cable, and 3300 XL Proximitor Sensor to deliver an industry-leading 27.9mm (1100 mils) linear range - the longest available in eddy current transducer technology. The Bently Nevada 330180-91-05 is particularly effective for measuring differential expansion (DE) and rotor expansion (RX) in large steam turbines, where it accurately tracks thermal growth differences between rotors and casings.

When configured for DE measurement, the I/O Module 138493-01 BENTLY NEVADA supports both single-side and complementary dual-transducer arrangements. The system's extended linear range accommodates various turbine configurations, with dual-transducer setups effectively doubling the measurable range to 56mm (2.2 inches). The Bently Nevada 138493-01 Replacement DIN-Mountmounting Pad provides reliable data regardless of axial movement magnitude or target size, making it ideal for both redundant measurement setups (single-collar observation) and extended-range applications (opposite-side collar monitoring).

For applications with space constraints, the Replacement DIN-Mount Mounting Pad 138493-01 NSv variant offers solutions for compressors and machines with tight installation requirements. This version maintains the system's precision while accommodating small shafts (<51mm) and limited side-view applications, performing radial vibration, axial position, and Keyphasor measurements. The NSv configuration can replace older 3300 RAM and 3000/7000-series systems, with upgrade paths varying by existing installation.

The 138493-01 3300 XL High Temperature Proximity System represents the evolution of Bently Nevada's transducer technology, offering backward compatibility with proper component replacement. Its large coil design ensures superior signal quality and measurement stability in demanding environments. Whether monitoring steam turbines or compact compressors, this transducer system delivers the precision and reliability expected from Bently Nevada's industry-leading monitoring solutions.