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This article was originally published on March 21, 2022, and updated on July 9, 2025. As manufacturing and industrial operations have become increasingly automated and reliant on electronic systems for safety, the importance of standardized functional safety measures has grown. Protecting system operators and maintaining safe, reliable processes are now top priorities across all industries. Whether you’re protecting workers from injury, preventing environmental spills or avoiding costly equipment damage, ensuring your pressure instruments are Safety Integrity Level (SIL) certified will play a key role in minimizing risk in your critical process applications. For example, when using pressure switches in your application, you will want to consider the SIL rating of your system or device. As a global expert in pressure and temperature instrumentation, we are often asked to explain the benefits of SIL certification. Read this article to learn more about this safety standard, the organization that created it, where SIL-certified instruments are used and the pressure switches we offer that can help prevent worker injury or damage to your equipment.