JUMO 14597 safetyM STB/STW Ex - Safety Temperature Limiter and Safety Temperature Monitor Operating Manual - Manual (Page 41)

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for the SIL qualification of the overall plant. The plant operator must always determine the PFD
avg
and/or PFH value of the
overall safety chain to evaluate the achieved SIL.
Requirements regarding proof-check interval and lifetime apply only in terms of functional safety.
Requirements as specified by DIN EN 14597 are defined in this Operating Manual B701155.0 and are independent of the re-
quirements of this Safety Manual.
Temperature probes
Admissible measuring ranges must be observed for devices with approval according to DIN EN 14597 and SIL certification. If
other temperature probes than those described by JUMO data sheets 90.1006 and 90.2006 are used, their recording and suit-
ability for use must be verified.