NT 208D GB1
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RECOMMENDATIONS
Each application has its priorities. Accordingly, the MiniSonic is particularly flexible
and can be adapted to extreme situations, meaning that many applications are possible.
Each value or text field is filled in by Ultraflux before the final tests and delivery.
Nevertheless, it is advisable to verify them by running through the various menus,
comparing them with files given at the time of order, or with your instructions or
particular choices.
More particularly, geometrical descriptions specific to the site and the choice of scale
are the responsibility of the end user.
During a run-
through of the various menus, it is advisable to fill in the “Probes /
Echoes” menu first, followed by those related to the Pipe and the Flow Rate / Fluid (Q)
to obtain a measurement to be transmitted according to the instructions entered into the
“General” menu
FINAL CHECKS AND TESTS
Once installation, connections and parameters have been set up, several possible
situations may arise:
Case 1
– The measurement displayed and transmitted meets your expectations.
Case 2
– The measurement operates but may lack accuracy or is unstable.
Case 3
– The measurement is not reliable or the MiniSonic is displaying a Fault.
Case 1
: Although everything appears to be OK ( Flow Rate = OK ), check the other
values:
The echo or gain level compared to typical values.
- For external probes, a gain exceeding 50/60 dB reveals certain difficulties such
as the wrong choice of probes, incomplete installation or coupling, rusted pipe,
absorbent fluid …
- For intrusive probes, the gain level is usually low (excepted for gas)
The ESC mode can decide a high gain margin. Take it in account in your
diagnosis.
The quality index Q.I. is normally close to 100 %.
By default, it indicates several perturbations = electrical interference, passage of
bubbles, highly charged fluid …
In this case, in-depth investigation is advisable (oscilloscope).
The displayed speed of sound should be close to that expected. It is an index of
good control of the geometry or application.
If the flow rate can be interrupted, check the Zero
If necessary, carry out adjustment using the Auto-Zero menus.
By PC and software, it is possible to set the measurement to Zero at very low flow
(cut-off = % of Q max).
