Diagnosing and troubleshooting
9.4 Fault codes and corrective actions
SITRANS F Ultrasonic flowmeters FST030 (Modbus)
94
Operating Instructions, 08/2017, A5E37367739-AC
ID/
Icons
Diagnostic
Action
Comments
15
Path 2: No signal
Potential reasons: Process conditions, wrong
installation, defect in electronics, cabling or
sensor. It may be necessary to adjust either
installation or configuration or to replace com-
ponents. Provide DSL error codes to service
personnel for further information.
19
Electronics temp.
The internal DSL temperature is outside the
specified operating temperature range. Verify
that the ambient temperature is within specified
limits. Working outside temperature limits can
damage electronics and reduce product life-
time.
22
Density calculation
Measurement of Process Density has failed.
This could be due to errors in attached cabling
or measurement equipment, defect sensor
frontend electronics or configuration errors on
channels 3, 4, 5 or 6. Investigate DSL error
codes to determine precise root cause and
required actions. For processes with a constant
density, the density can alternatively be based
on a fixed user specified value.
23
Medium temp. calc.
The measurement of Process Temperature
has failed. This could be due to errors in at-
tached cabling or measurement equipment,
defect sensor frontend electronics or configura-
tion errors on channels 3, 4, 5 or 6. Investigate
DSL error codes to determine precise root
cause and required actions. For processes with
a constant temperature, the process tempera-
ture can alternatively be based on a fixed user
specified value.
24
Pressure calculation
Measurement of Process Pressure has failed.
This could be due to errors in attached cabling
or measurement equipment, defect sensor
frontend electronics or configuration errors on
channels 3, 4, 5 or 6. Investigate DSL error
codes to determine precise root cause and
required actions. For processes with a constant
pressure, the pressure can alternatively be
based on a fixed user specified value.
25
Viscosity calculation
Measurement of Process Viscosity has failed.
This could be due to errors in attached cabling
or measurement equipment, defect sensor
frontend electronics or configuration errors on
channels 3, 4, 5 or 6. Investigate DSL error
codes to determine precise root cause and
required actions. For processes with a constant
viscosity, the viscosity can alternatively be
based on a fixed user specified value.