KROHNE OPTISWITCH 3x00C 2wire SIL EN - Manual (Page 10)

Overflow protection
(max. operation)
Dry run protection
(min. operation)
λ
du
18 FIT 43 FIT
DC
S
11 % 10 %
DC
D
90 % 81 %
MTBF = MTTF + MTTR 1.59 x 10 6
h 1.59 x 10 6
h
Mode switch on the sensor to "min."
Overflow protection
(max. operation)
Dry run protection
(min. operation)
λ
sd
39 FIT 45 FIT
λ
su
373 FIT 361 FIT
λ
dd
168 FIT 173 FIT
λ
du
36 FIT 37 FIT
DC
S
9 % 11 %
DC
D
82 % 82 %
MTBF = MTTF + MTTR 1.59 x 10 6
h 1.59 x 10 6
h
Diagnosis test period < 100 sek.
Single channel architecture (1oo1D)
SIL SIL 2
HFT 0
Sensor type Type B
Mode switch on the sensor to "max."
Overflow protection
(max. operation)
Dry run protection
(min. operation)
SFF 97 % 93 %
PFD
avg
T
Proof
= 1 year
T
Proof
= 5 years
T
Proof
= 10 years
< 0.008 x 10 -2
< 0.039 x 10 -2
< 0.077 x 10 -2
< 0.019 x 10 -2
< 0.093 x 10 -2
< 0.186 x 10 -2
PFH < 0.018 x 10 -6 /h < 0.043 x 10 -6 /h
Mode switch on the sensor to "min."
10 OPTISWITCH series 3000 • - two-wire
Functional safety
32745
-EN
-080414