9 Trouble-shooting Prosonic Flow 92
50 Endress+Hauser
9.2 Error messages
Serious system errors are always recognised by the instrument as “Fault messages”,
and are shown on the display. Fault messages immediately affect the inputs and out-
puts.
"
Caution!
In the event of a serious fault, a flowmeter might have to be returned to the manufacturer
for repair. The procedures on Page 8 must be carried out before you return a flowmeter
to Endress+Hauser. Always enclose a fully completed “Declaration of Contamination”
form. You will find a copy of the form at the back of these Operating Instructions.
!
Note!
Also observe the information on Page 39 and 52.
Error message Error description Remedy / spare part
Communication No data transfer between internal
modules or faulty internal data
transfer.
Spare parts see Page 53
→
contact E+H
Amplifier Fault Amplifier board defective. Replace the amplifier board.
Spare parts see Page 53
→
contact E+H
Amplifier Data Amplifier data invalid. Verify Site Setup data.
Restart device.
Received Signal The strength of received signals
is changing.
– Check whether the application
causes interference of the
signal.
– Check for air in the fluid.
– Check for solid content.
– Check for stable flow
conditions.
Init. Run Initialisation running. Wait until the procedure is com-
pleted.
Signal Low Attenuation of acoustic measure-
ment section too high.
– Check to see if coupling fluid
must be renewed.
– It is possible that the fluid
indicates too much attenuation.
– Check the sensor distance
(installation dimensions).
– Reduce the number of traverses
if possible.
Signal High Received signal is too high. Reduce burst voltage.
Error Current Output Range current out exceeded. Modify the range.
Backup Battery Fail. The backup battery for setup and
log data failed and needs to be
exchanged.
Spare parts see Page 53
→
contact E+H
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