White Paper: The 'Logic' of Single Loop Logic Solvers

At one point, the thought of a safety system conjured up images of Triple Modular Redundant (TMR) systems that represented enormous capital expenses. However today, manufacturers offer a wide gamut of safety-certified devices that can be integrated into very cost-effective solutions. One simple, economical, yet highly dependable option is using a Safety Trip Alarm as a Single Loop Logic Solver. 

A Single Loop Logic Solver (or Safety Trip Alarm) monitors a temperature, pressure, level, flow, position or status variable. If the input exceeds a selected high or low trip point, one or multiple relay outputs warn of unwanted process conditions, provide emergency shutdown or offer on/off control, such as in a level control application.