3500/53 133388-01 Used as an overspeed protection system

The Bently Nevada Electronic Overspeed Detection System for the Series 3500 Mechanical Inspection system

provides a highly reliable, fast responding redundant tachometer system designed specifically to be used as part

of the overspeed protection system. It is designed to meet the requirements of the American Petroleum Institute (API) Standards 670 and 612 for overspeed protection.
The 3500/53 modules can be combined to form a 2 choose 2 or 3 choose 2(recommended) voting system.
The overspeed detection system requires 3500 racks with redundant power supplies.

Ordering precautions
In general
If you add 3500/53 to an existing 3500 system, the following firmware and software versions (or
Later) is required:
3500/20 Module Firmware – Version G
3500/01 Software – Version 2.00
3500/02 Software – Version 2.03
3500/03 Software – Version 1.13
Redundant power supplies are used in 3500 racks containing overspeed detection systems
Necessary.