Siemens SITRANS LG250 Operating Instructions Manual page 71

Typical deviation - Total level interface
measurement
Typical deviation - Level measurement
5 mm (0.197
")
2 mm (0.079 ")
0
-2 mm (-0.079 ")
1
-10 mm (0.394
")
0,03 m (1.181
Fig. 36: Deviation SITRANS LG250 in coax version in water
1 Dead band - no measurement possible in this area
L Probe length
10 mm (0.394
")
5 mm (0.197
")
2 mm (0.079
")
0
-2 mm (-0.079
")
-5 mm (-0.197 ")
0,1 m (3.937
Fig. 37: Deviation SITRANS LG250 in coax version in oil
1 Dead band - no measurement possible in this area
L Probe length
Repeatability
Specifications of the safety tolerance
(SIL)
Variables influencing measurement accuracy
Specifications for the digital measured value
Temperature drift - Digital output
Depending on the installation conditions, deviations can occur which can be rectified by adapting the adjust-
6)
ment or changing the measured value offset in the DTM service mode
The dead bands can be optimized via a false signal suppression.
7)
PBD-51041387
± 5 mm (0.197 in)
See following diagrams
6)7)
)
"
0,15 m (5.906 " )
1
)
"
0,15 m (5.906 )
"
≤ ±1 mm
Siehe Safety Manual
±3 mm/10 K relating to the max. measuring range or
max. 10 mm (0.394 in)
SITRANS LG250 - Operating Instructions
L
L
0,1 m
(3.937
")
0,05 m
(1.969 ")
1
0,05 m
(1.97
")
71