KROHNE UFM 600T EN - Manual (Page 50)

replacements. If 3 or 4 markers
remain the selection of a diffe-
rent location on the pipe wall is re-
commended; some irregularities at
the interior of the pipe might have
caused poor signal reception.
5 Low signal marker: 1 or 2 markers on.
Cause Solution
Small deviation of the Adjust one transducer approx.
transducer distance from ± 5 mm. until the markers dis-
the correct value
appear; do this very carefully so as
not to disturb the sonic coupling
grease layer between the trans-
ducer and the pipe wall.
47