Message Description
Low Signal - Press <ENT> During the Initial Makeup the flow meter decides that the level of the receive signal is
insufficient for proper operation. Some reasons for low signal are:
●
Invoking [Install completed?] on an empty pipe.
● Coupling compound insufficient; not applied or evaporated.
●
A disconnected or broken transducer cable.
● The pipe needs to be conditioned at the mounting location.
● Flush out large air bubbles.
● The Xdcr 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 <ENT> to resume the
installation procedure. Otherwise, press the <Left Arrow> to abort the installation and
conduct a thorough investigation.
Detection Fault 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. Attempt to improve operating conditions by
reinstalling the transducers 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.
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.
10.2 F4 Reset Procedure
You may encounter
an operating problem that blocks access to the Diagnostics Menu, or the
flowmeter may operate erratically after exposure to a power transient or some other traumatic
event. These cases may require use of the F4-reset sequence to restore operation.
The F4-Reset sequence operates on two levels:
● Clear Active Memory
The first F4-Reset deletes all the data currently in Active Memory, but leaves Datalogger data
and all stored Site Setups intact. This is the most desirable method since all you have to do
to restore operation is reload a saved Site Setup.
● Clear All Saved Memory
If the first sequence fails then you have to resort to the second level of the F4 sequence, which
allows you to clear ALL Saved Memory. Be aware that this erases all saved Site Setups
(including flow calibrated sites), Datalogger Data and user-defined pipe and sensor tables.
This will require you to completely re-install the system and repeat all desired default settings,
custom pipe tables, etc. The table below shows the sequence of the [F4] routine:
Troubleshooting
10.2 F4 Reset Procedure
FUP1010 IP67 Portable Flowmeter
118
Operating Instructions, 02/2010, A5E02951522A Revision 01
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