The bently 3500 series of mechanical protection systems, monitors and Bentley (Bently Nevada) vibration sensor probes fit well with a wide measurement range, making it an American vibration monitoring product. It can be used for measuring shaft vibration, shaft displacement, key phase, speed, overspeed protection, eccentricity, thermal expansion, differential expansion, etc. Receive vibration signals from bently3300 Eddy current sensor system (Bently3300XL sensor probe, extension cable, preprocessor) and 330500, 330400, 9200 and other speed acceleration sensors. The bently3500 system is designed to monitor the vibration of large rotating machines: steam turbines, water turbines, fans, compressors, turbo expanders, electric motors and generators, exciters, gear boxes, pumps, and more. It is widely used in power plant, chemical plant, oil refinery, steel factory, machinery factory, water pump factory, wind turbine factory, university scientific research institutions and complete automation instrument enterprises.