Endress+Hauser Gammapilot M FMG60 - Functional Safety Parameters (SIL 2)

Gammapilot M
Endress+Hauser 9
Functional safety parameters
(SIL 2)
The table shows the specific functional safety parameters for single-channel device operation *
3
:
SD230en07
Proof-test interval
Parameters according to IEC 61508 Value
Safety function Maximum point level detection
SIL Hardware: 2 Software: 3
HFT 0
Device type B
Mode of operation Low demand mode, High demand mode
SFF 96 %
MTTR 8 h
T
1
Proof-test interval; see chart
λ
sd
577 FIT
λ
su
655 FIT*
6
/ 94 FIT*
5
λ
dd
1316 FIT
λ
du
92 FIT
λ
tot
*
1
3303 FIT
PFD
avg
for T
1
= 1 year *
2
4.04 × 10
-4
PFD
avg
for T
1
= 5 years *
2
2.02 × 10
-3
PFH *
2
9.2 × 10
-8
1/h
MTBF *
1
35 years
Diagnostic test interval 15 min
Fault reaction time *
4
6 s
*
1
According to Siemens SN29500.
*
2
Where the average temperature when in continuous use is in the region of 50 °C, a factor of 1.3 should be taken into
account.
*
3
For multichannel device operation, see the "Appendix" → ä 19.
*
4
Fault reaction time: Time between detection of an internal fault and setting of error current (≤ 3.6 mA or ≥ 21 mA)
*
5
In accordance with IEC 61508 Ed.2
*
6
In accordance with IEC 61508 Ed.1
PFD
avg
2,5E-03
2,0E-03
1,5E-03
1,0E-03
5,0E-04
0,0E+00
012 34 5
Maximum point level detection
1oo1D
Proof-test interval (years)