NT228B GB2
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20.1
General Recommendations:
It is important to separate site problems (the most frequent) from
setting problems or device problems.
A particular care must be taken with geometrical measurements, specific to each
site. This is the responsibility of the end user, as it is for probe selection.
It is always possible to come back to the original settings of your UF 801-P when it
was delivered, with the function “Re-init” + Yes.
Please, keep us in touch and stay informed about the firmware and software up-
grading, which can be easily done through the serial link with adapted tools.
20.2
Typical Troubles or Situations
Once the installation, connections and parameters have been set up, there may be
several possible situations:
Case 1 – The measurement displayed and transmitted meets your
expectations.
Case 2 – The measurement operates but is inaccurate or is unstable.
Case 3 – The measurement is not reliable or the UF 801-P is displaying a
Fault.
Case 4 – The UF 801-P has no display or the buttons are inactive or shows
a fault.
Case 1
: Although everything appears to be OK (Flow Rate = OK), check
the other displayed values as:
The echo shape and amplification gain level, compared to typical values:
With external probes, a gain exceeding 60 dB indicates difficulty, such as
wrong probes, incomplete installation or coupling, corroded pipe, absorbent
fluid …
For intrusive probes, the gain level is usually low (excepted for gas))
Use the Echo Display menu facilities
The quality index I.Q., which is normally = 100 % or close value, is too low:
This indicates several possible disturbances, as electrical interference,
passage of bubbles, or high % of suspended solids…
In-depth investigation is advisable on the process to improve conditions.
