Siemens SITRANS F series Betriebsanleitung Seite 54

Troubleshooting
5.2 Troubleshooting
Error or Message
Low Signal - Press
<ENTER>
Detection Fault
Note
If you receive a Detection Fault message, it is strongly recommended that the Technical
Service Department (http://www.automation.siemens.com/partner) be contacted.
52
Probable Cause
During the Initial Makeup the flow meter
decides that the level of the receive signal is
insufficient for proper operation.
If it appears that the flow meter cannot
complete an Initial Makeup it means that the
pipe and/or liquid conditions do not permit a
receive signal that meets the flow detection
standards. The system will not operate.
Solution
Some reasons for low signal are:
Invoking [Install Complete?] on an empty pipe.
•
Coupling compound insufficient; not applied or
•
evaporated. Reapply couplant.
A disconnected or broken Sensor cable.
•
The pipe needs to be conditioned at the
•
mounting location.
Flush out large air bubbles.
•
The Sensor cables are defective or not
•
connected to the correct channel.
The Set Empty routine performed when pipe
•
was NOT actually empty.
If you locate and correct the improper condition
immediately, press <ENTER> to resume the
installation procedure. Otherwise, press the <Left
Arrow> to abort the installation and conduct a
thorough investigation.
Attempt to improve operating conditions by
reinstalling the Sensors at a different spacing
offset, or even at a different location on the pipe.
Switching from Reflect to Direct Mount may solve
the problem. However, operation may not be
possible if there is poor liquid or pipe wall sonic
conductivity.
FUS1010 IP65 NEMA 4X & IP66 NEMA 7 Quick Start
Operating Instructions, 07/2014, A5E03086486-AD