Bently Nevada 3500 Series Machinery detection system electronic overspeed detection system is highly reliable, rapid response to redundancy tachometer system dedicated to the mechanical overspeed protection, the system according to the American Petroleum Institute standard 670 and 612 on the overspeed protection . 3500/53 modules can be used to form 2 2 3 2 (recommended) voting system. 3500 framework overspeed detection system is installed with the requirements of redundant power. 3500/53-03-00 3500/53-03-00 3500/53-03-00 3500/53-03-00 3500/53-03-00 3500/53-03-00