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Endress+Hauser now applying IEC 61508 to all safety products

Endress+Hauser is now providing all its safety-related instrumentation with a single standard class that can be used for: ANSI/ISA 84.00.01-2004 (IEC 61511); ‘proven in use’ practices; and basic process control applications.

To achieve this, the company employs the IEC 61508 processes on all its products. According to the company, the elimination of separate measuring instrument versions, each dedicated to either safety or basic control, contributes to reduced life cycle costs.

According to Endress+Hauser, the emergence of ANSI/ISA 84.00.01-2004 (IEC 61511) and IEC 61508 standards are giving engineers better tools to model and evaluate Safety Instrumented System (SIS) designs.

Components used in safety systems are available with SIL-metrics that allow Probability of Failure on Demand Average (PFDAVG) and the Mean Time To Failure Spurious (MTTFSP) to be modelled.

This goes a long way to ensure that the SIS being designed not only addresses the desired Safety Instrumented Function (SIF) and target Safety Integrity Level (SIL) but also the desired availability, the company says.

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