_________________________________________________________________________________________________
______________________________________________________________________________________
U326_UVAintAS102_B_e_210316
13/15
16
Troubleshooting
Störung
Ursache
Störungsbehebung
green LED off
no power supply
check connecting cable, measure voltage at
connecting terminals
transducer electronics faulty return to factory
analog output =
error (< 3.6 mA
or < -0.2 V),
green LED on
cable break or short-circuit
check terminals; check cable for continuity and
replace if necessary
transducer or sensor electro-
nics faulty
return to factory
analog output = er-
ror (< 3.6 mA
or < -0.2 V),
green LED flashes
parameter error
check parameter with UCOM software, save new
checksum (or return to factory)
transducer electronics faulty return to factory
analog output =
4 mA,
no measured value
sensor contaminated
clean sensor according to instructions
profile factor set at 0.000
set profile factor to relevant nominal diameter
and sensor type
measured value too
low
sensor contaminated
clean sensor according to instructions
profile factor setting too low
set profile factor to relevant nominal diameter
and sensor type
input/output section too
short
change sensor position; improve flow con-
ditions with a flow rectifier
rotational flow
reposition sensor in flow direction; install flow
rectifier
reduced acoustic coupling in
the sensor elements as a
result of intense vibration or
a powerful impact
return sensor to factory for performance test
burden at current output is
greater than specified in the
Technical Data Sheet. This
results in correct output val-
ues in the lower range and
no longer increasing output
values at the top end of the
measuring range
reduce burden resistance
incorrect scaling of analog
output
check setting and amend if necessary
measured value too
high
profile factor setting too
hogh
set profile factor to relevant nominal diameter
and sensor type
EMC problem
see reference to electromagnetic compatibility
(EMC)
