Burkert Flowave 8098, Operating Instructions Manual

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342
Maintenance and troubleshooting
Type 8098 FLOWave L
24.12.3 Message "Not totally filled"
Message
Not totally filled
Symbol displayed in the
information bar
Depends on the device status the event is associated to.
Possible cause The calibration has failed. The calibration has failed because of one of the
possible causes:
• The sensor may be broken (valid for product variants with DN08).
• The tube is not totally filled. Thus not all the sensors are in contact with
the liquid and measurement is not possible.
The related event must be enabled. See chapter 15.14 Diagnostics: moni -
toring special events that occur in the process, on the sensor or on the
electronics.
What to do?
→
Make sure the measurement tube is completely filled, for example by
increasing the flow rate.
→
If the message No signals from interdigital transducer is generated
simutaneously, then send the product back to Bürkert.
→
If the message Not totally filled remains, then send the product back to
Bürkert.
24.12.4 Message "Liquid out of range"
Message
Liquid out of range
Symbol displayed in the
information bar
Depends on the device status the event is associated to.
Possible cause The speed of sound in the liquid is out of range.
The related event must be enabled. See chapter 15.14 Diagnostics: moni -
toring special events that occur in the process, on the sensor or on the
electronics.
The density in the liquid is out of range.
What to do?
→
Make sure the liquid in the pipe meets the technical specifications given
in the data sheet for the device and in chapter 6 Technical data .
24.12.5 Message "Unstable flow rate"
Message
Unstable flow rate
Symbol displayed in the
information bar
Depends on the device status the event is associated to.
Possible cause The flow rate is not stable. The standard deviation of the flow rate measure -
ments is too high.
The related event must be enabled. See chapter 15.14 Diagnostics: moni -
toring special events that occur in the process, on the sensor or on the
electronics.
What to do?
→
Make sure the operation of the equipment in the process, such as
pumps and process valves, is correct.
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