Any process management system can be efficient if the instrumentation is reliable. Endress+Hauser’s contribution to risk reduction in process control, as well as safety applications, begins with safe instrument design. Safety always comes first and starts with safe design and manufacturing based on certified products, people and processes.
Benefits
* Products: SIL devices are extensively tested and independently assessed.
* Process: intensively pursued functional safety development process.
* Sustainability: strategic functional safety management with continuous improvement.
Certified products level increase safety and availability
Since 1999, Endress+Hauser has extended its safety oriented instrument offering to include Safety Integrity Levels up to SIL3.
Time-of-Flight level measuring instruments, vibronic point level switches and hydrostatic level devices are examples of the broad portfolio developed according to IEC 61508 and independently assessed by TÜV Rheinland. Features include self-diagnostics and proof testing that help to increase process safety and plant availability.
Certified people and processes for systematic improvement
The company’s certified functional safety management includes a quality and safety policy to allow permanent and systematic verification and improvement. For hardware and software development it has implemented standardised measures to avoid systematic faults and control random failures. During installation of SIL devices, requirements and restrictions are clearly described in the product safety manuals.
Security in case of device failure
The R&D team systematically develops measuring devices certified up to SIL3 that also considers fail safe behaviour in case of device failure. With Liquiphant FailSafe for example, more than 100 000 operating hours, 500 000 start-ups and 1,7 million demands have been simulated and tested. More than 14 000 test cases have been generated and in excess of 2500 documents have been created to verify the capability of the sensor – and that’s even before a single device was sold.
Mechanical integrity reduces operation risks
During design and manufacture Endress+Hauser experts follow clear rules, often defined in standards like EN or ASME. Material selection for a targeted industry and applications is as crucial as virtual simulations, practical stress tests or the finite element method. Sealing concepts such as single, dual or factory seal are achieved through sophisticated mechanical design. Tests such as positive material identification are as important as material traceability or welding documentation.
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