Endress+Hauser Proline Prosonic Flow P 500 Functional Safety Manual page 27
Ultrasonic time-of-flight flowmeter hart
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Also See for Proline Prosonic Flow P 500:
- Operating instructions manual (224 pages) ,
- Technical information (88 pages) ,
- Manual (80 pages)
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Proline Prosonic Flow P 500 HART
Average probability of failure and mission time
PFD
for a single-channel system:
avg
SIL2 - 1oo1
PFD
a
0.003
0.0025
0.002
0.0015
0.001
0.0005
0
0
2
Options BA "4-20mA HART", CA "4-20mA HART Ex-i passive" and CC "4-20mA HART Ex-i active"
t
Mission time in years
1
PFD
avg
2
Limit value for average probability of failure
1oo1
Single-channel architecture
Endress+Hauser
2
4
- Average probability of dangerous failure on demand
6
8
Use in protective systems
2
1
t
10
A0042079
27
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