Tecfluid MX4 For FLOMID Series Manual do Utilizador descarregar pdf (Página 40)

7.5.3.1 4-20 mA output configuration

It allows to choose between unidirectional and bidirectional.

Programming a flow rate value for 20 mA higher than the one for 4 mA, the loop current

changes from 4 to 20 mA as the flow increases.

Otherwise, programming a flow rate value for 20 mA lower than the one for 4 mA, the

current loop will change from 20 to 4 mA as the flow increases.

7.5.3.3 Current calibration for 4 and 20 mA

The MX4 converter is delivered with the current output already calibrated. If you want to

correct a derive of the 4 or 20 mA current values because they do not coincide with the

ammeter used, it can be done by pressing the keys (Down / Left) and (Up) to increase or

decrease the current respectively in each case. The values shown on the screen are

reference levels. When one of this data is confirmed, the MX4 will take the current value

shown on the ammeter as a reference.

Before making a current calibration, be sure that the ammeter used for that is showing the

real measure.

7.6 Default screen

Flow rate, totalizer, liquid velocity or flow rate and totalizer screens can be programmed

as a default. Thus, the converter presents this screen when a power failure occurs or

when returning from the installation or programming menu.

If “Unidirectional” is chosen, the analog output will have a value proportional to the flow

rate when positive, and it will provide always 4 mA when negative.

If “Bidirectional” is chosen, the analog output will have a value proportional to the flow rate

both for positive and negative values.

7.5.3.2 Programming of the 4-20 mA output

Flow rate values equivalent to each current are entered directly.

CONVERTER PROGRAMMING

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Rosman Mohamed 12 Jul 2024 | 01:50:59

thank you

Tecfluid MX4 For FLOMID Series Manual do Utilizador Página 40