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19 Troubleshooting
Loss of signal during measurement
• If the pipe had been pressureless: Was there no measuring signal afterwards? Contact
FLEXIM.
• Wait briefly until the acoustic contact is established again. The measurement can be
prevented by a temporarily higher proportion of liquid or solid particles in the medium.
The measured values substantially differ from the expected values
• Wrong measured values are often caused by wrong parameters. Make sure that the
parameters entered are correct for the measuring point.
• If the parameters are correct, see section 19.5 for the description of typical situations in
which wrong measured values are obtained.
19.2 Correct Selection of the Measuring Point
• Make sure that the recommended min. distance to any disturbance source is observed
• Avoid locations where deposits are building in the pipe.
• Avoid measuring points in the vicinity of deformations and defects of the pipe and in
the vicinity of welds.
Note!
If the temperature fluctuates at the measuring point, it is important
that the inner hook of the clasp grabs in the tension strip. Otherwise,
the pressure of the transducer will be insufficient when the tempera-
ture is low.
Note!
It is recommended to use FLEXIM clasps with springs if the tempera-
ture fluctuates strongly. Contact FLEXIM.
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