330850-51-05 The electronic overspeed detection system of Bently Nevada's 3500 series mechanical detection system is a highly reliable and responsive redundant tachometer system specifically designed for mechanical overspeed protection. The system complies with the American Petroleum Institute standards 670 and 612 for overspeed protection
330851-08-000-019-90-01-00 Bently probes, Bently sensors, Bently power modules, Bently cables, and Bently accelerometers from the United States have a complete range of products