The MTTF value is a term from the field of risk analysis & risk evaluation. The exact meaning is m ean t ime t o f ailure or simply the mean life of a component. The MTTF has gained particular relevance due to EN ISO 13849-1. In accordance with this standard, …
Performance level
What is meant by diagnostic coverage?
| Stefan Heusel | Know-howAn important parameter in the use of pressure sensors in safety devices is the so-called “Diagnostic Coverage” (DC). However, since single-channel, in particular, but also two-channel safety circuits often malfunction or may be defective, a known diagnostic …
SIL? PL? What is the probability of failure of a safety function?
| Stefan Heusel | Know-howCustomers often ask us: “Can my product be part of a safety function? Which standards or directives apply in this case?” The most important safety directives and standards available today are SIL (Safety Integrity Level) and PL (Performance Level). These …
Pressure sensors, transmitters and safety: SIL, PL, DIN EN ISO 13849 and IEC 61508 – Commonly used terms and abbreviations
| Stefan Heusel | Know-howWhen using pressure sensors and pressure transmitters, our customers often ask for explanations of frequently used terms and abbreviations in connection with "SIL applications". SIL – which means Safety Integrity Level, and PL, which means Performance Level, are …
Is there an intrinsically safe pressure sensor / pressure tranmsitter with SIL2 classification?
| Sabine Mai | PressureFor the pressure transmitter IS-20 with the ignition protection type ia (intrinsically safe) and ATEX approval, the safety-relevant data for SIL applications have been determined and summarized in the additional instructions "safety-related data" (PDF). These …