Use in protective systems
Proline Promass 500
32
Hauser
Average probability of failure and mission time
PFD
avg
for a single-channel system:
SIL2 - 1oo1
2
1
0.003
0.0025
0.002
0.0015
0.001
0.0005
0
0
2
4
6
8
10
PFD
a!"
t
A0031607
3
Option BA "4-20mA HART", option BB "4-20mA + Wireless HART"
2
1
0.003
0.0025
0.002
0.0015
0.001
0.0005
0
0
2
4
6
8
10
PFD
a!"
t
A0031609
4
Option CA "4-20mA HART Ex-i", option CB "4-20mA Ex-i + Wireless HART"
t
Mission time in years
1
PFD
avg
- Average probability of dangerous failure on demand
2
Limit value for average probability of failure
1oo1
Single-channel architecture
Summary of Contents for HART Proline Promass 500
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Page 8: ...Certificate Proline Promass 500 8 Endress Hauser 2 Certificate A0033748 ...
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