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©
Dinel, s.r.o. RFLS–28
Mechanical performance and area classification
(EN 60079-0, EN 60079-10-1)
Sensor
performance
electrode type
Device classification
RFLS – 28N
All types
Basic performance for use in non-explosive areas.
Process connection
name
dimension
marking
Pipe thread
G ¾''
G¾
Factory default
switching mode
O (closes when submerged)
sensitivity
for water sensing
Parameters of functional safety
variant of sensor
RFLS-28N-_-_-P
RFLS-28N-_-_-PD
according to standard
EN 61508 ed.2
Safety function
MIN, MAX
SIL
2
Hardware architecture
1oo1 without diagnostic
1oo1 with diagnostic
DC
0 %
99 %
PFH (T
Proof
= 1 rok)
(
for variant N)
1,471 * 10
-7
1,471 * 10
-9
λ
DD
(
for variant N)
0 FIT
145,6FIT
λ
DU
(
for variant N)
147,1 FIT
1,5 FIT
MTTF
D
(
for variant N)
776 years
valid version FW
v2
v3-diagnostic
Explanations:
SIL .................Safety integrity level,
DC .......................Diagnostic cover,
PFH.............Average frequency of dangerous failure per hour,
T
Proof
..............Functional control period of the device safety function
λ
DD(DU)
............
Detected (resp. unde tected) dangerous failure rate per hour
MTTF
D
.........Mean Time To dangerous Failure
