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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