Bently 135489-04 is a high-performance signal conditioning module developed by Bently Nevada (now part of GE Vernova), specifically engineered for the 3500 Series Rotating Machinery Monitoring System. As a critical "signal processor" between field eddy current sensors and the 3500 system’s core monitoring modules (e.g., vibration or axial position monitoring modules), its primary role is to amplify, linearize, and filter weak raw signals from sensors. This ensures high-precision, low-noise data transmission—essential for accurate condition monitoring and early fault diagnosis of rotating machinery (such as turbines, generators, and centrifugal compressors). Below is its comprehensive detailed information: