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166 UMG70XV3-4EN 12.01.2009
19 Troubleshooting
Date and time are wrong, the measured values will be deleted when the flowmeter
is switched off
The data backup battery has to be replaced. Send the flowmeter to FLEXIM.
An output does not work
Make sure that the outputs are configured correctly. Check the function of the output as
described in section 18.1.3. If the output is defective, contact FLEXIM.
Measurement is impossible or the measured values substantially differ from the
expected values
see section 19.1.
The totalizer values are wrong
see section 19.6.
19.1 Problems with the Measurement
A measurement is impossible as no signal is received. A question mark is dis-
played at the right side of the lower line
• Make sure that the entered parameters are correct, especially the outer pipe diameter,
the pipe wall thickness and the sound velocity of the medium. (Typical errors: The cir-
cumference or the radius was entered instead of the diameter. The inner pipe diameter
was entered instead of the outer pipe diameter.)
• Make sure that the recommended transducer distance was adjusted when mounting
the transducers.
• Make sure that an appropriate measuring point has been selected (see section 19.2).
• Try to obtain better acoustic contact between the pipe and the transducers (see section
19.3).
• Enter a lower value for the number of sound paths. The signal attenuation might be too
high due to a high medium viscosity or of deposits on the inner pipe wall (see section
19.4).
The measuring signal is received but no measured values can be obtained
• An exclamation mark "!" right in the lower line indicates that the defined upper limit of
the flow velocity is exceeded and, thus, the measured values will be marked invalid.
The limit has to be adapted to the measuring conditions or the check has to be deacti-
vated (see section 12.3).
• If no exclamation mark "
!
" is displayed, a measurement at the selected measuring
point is not possible.