Hi,
I am trying to wire a 2 wire 0/4-20 mA analog output Flow Meter to a UIA-0204N I/O module, but It doesn't seem I get the correct reading.
The output of the sensor is active. From this I understand that I don't need to supply any DC voltage to the two wires of the sensor, thus one goes to 0V and the other to the input of my card. I also have 0V for the common on my card.
Do I also need to include a resistor between the wires of the sensor?
Also, being an active output from the sensor the card needs to act like a current sink.
How is that achieved?
One last thing:
how can I easily determine if its 0-20 mA or 4-20 mA if it doesn't clearly specify it on the datasheet of the sensor?
Thanks