6 Safety Manual
45
6.6.4 Sensor connection possibilities
The connection of RTD temperature probes with 2, 3, and 4-wire technology or double thermocouples is described in the safe-
ty manual (probe for connection to 707071 Variant 1 and 2).
6.7 Determining the achieved performance level PL
The following safety-related parameters are required to determine the performance level of components/devices:
As further parameters to be observed, operational aspects such as the demand rate and/or the test rate of the safety function
can also influence the resulting PL.
Excerpt from DIN EN ISO 13849-1
SIL of the used
Sensor
systematic capability
(SC) of the used Sensor
max. achievable SIL of the system
with 1oo1 sensor system and tempe-
rature transmitter architecture
max. achievable SIL of the system in
redundant use (HFT = 1) of Sensor and
temperature transmitter
11 1 1
12 1 2
22 2 2
23 2 3
33 2 3
Note
This excerpt contains references to the complete standard DIN EN ISO 13849-1, which are therefore not reproduced
in this chapter
To Next Page
Loading...
