Tecfluid MX4 For FLOMID Series - Manual (Page 31)

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6.5.1 Parameters
This screen allows the diagnosis of the coil current, the differential voltage on the sensor
electrodes, and the conductivity of the liquid.
Pressing Enter a screen indicating a simulated speed of the liquid is shown. If the circuit is
working properly the displayed value will be between 4 and 6 m/s.
In the first row, a possible damage of the sensor coils can be detected. If there is a
symbol
Ѵ on this row, it means that the coils do not have any damage. If the symbol is X
it means that the coils are damaged. In this case, please contact your distributor.
The second row shows if the conductivity of the liquid is high enough for the instrument to
perform the measurement process.
The conductivity of the liquid should always be higher than 20 uS / cm .
The third row shows the differential voltage value on the electrodes (Vdif).
This voltage appears in some cases where chemical reactions are created on the surface
of the electrodes.
While this value does not exceed 0.5 V the flowmeter can work properly. If the value is
higher, there is no guarantee that the flow reading is correct. In this case, please contact
your distributor.
6.5.2 Simulator
With this diagnosis an electronic fault in the measuring circuit can be checked.
Before checking, disconnect the electrodes from the converter. To do this, if the converter
is compact mounted, remove the electrodes IDC connector shown in the figure on page
15 (5-pin cable). If the converter is remote mounted, remove the electrodes wires
(terminals 18, 19 and 20) of the terminal strip on the back (p. 24)
6
To come back to the main menu, connect the electrodes cable again and press Escape
key.
INSTALLATION PARAMETERS