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Reference Manual
00809-0200-4728, Rev RA
Section 7: Safety Instrumented Systems (SIS) Certification
April 2015
Safety Instrumented Systems (SIS) Certification
7.8.2
SIS safety transmitter failure values
IEC 61508 Safety Certified SIL 2 Claim Limit
Safety accuracy: Span > = 100 °C ± 2%
(1)
of process variable span
Span < 100 °C ± 2 °C
Safety response time: 5 seconds
7.8.3
Product life
50 years - based on worst case component wear-out mechanisms - not based on wear-out of
process sensors.
(1) A 2% variation of the transmitter mA output is allowed before a safety trip. Trip values in the DCS or safety logic solver should be
derated by 2%
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