While correcting a CFSP exam, I read a question which went something like this:
If you purchase all IEC 61508 certified equipment for a low demand safety instrumented function, then to meet the requirements of IEC 61511:
A. No other design verification is needed
B.…
Now that you know the step-by-step process of product certification, now let’s take a look at the actual information on the certificate.
In the left panel (gray background) you will find an exida certification logo. …
Last week you learned about what exactly a module is, and examples of different types of modules. Now we will move on to interfaces, the need for module testing, and code coverage requirements.
An interface, such as the 3D printer’s communication interface, or the format of the 3D data…
There have been passionate debates in email and meetings about “Proven In Use” versus IEC 61508 certification. Most debates characterize these evaluation techniques as competing methods. In 2000 when IEC 61511 was being written there were few IEC 61508 certified products on the market. The…