SITRANS LR200 with mA/HART
Operating Instructions, 05/2019, A5E32337676-AE
145
Symptom
Cause
Action
liquid surface vortexed
•
decrease Fill rate/min (2.4.2.) (Page 102)
•
relocate device to side pipe
•
increase confidence threshold in Echo threshold (2.8.4.3.)
(Page 112)
material filling
•
relocate SITRANS LR200
Reading response
slow
Fill rate/min (2.4.2.) (Page 102)
setting incorrect
•
increase measurement response if possible
Reads correctly but
occasionally reads
high when vessel is
not full
•
detecting close range echo
•
build up near top of vessel or
nozzle
•
nozzle problem
•
clean the antenna
•
use Auto false echo suppression (2.8.7.1.) (Page 115) and
Auto false echo suppression range (2.8.7.2.) (Page 117)
Level reading lower
than actual material
level
•
material is within Near Range
zone
•
multiple echoes processed
•
decrease Near range (2.8.1.) (Page 110) (minimum value
depends on antenna type)
•
raise SITRANS LR200
•
ensure Algorithm (2.8.4.1.) (Page 111) is set to F (First
echo)
•
vessel near empty and low
dK material
•
ensure Material (1.2.) selection is LIQUID LOW DK
•
set Position detect (2.8.4.2.) (Page 112) to Hybrid
•
set CLEF range (2.8.4.4.) (Page 112) to 0.5 m
