analog input with Pseudo Ground

Other Hardware Sensors
1

Hi,

I am trying to get a reading from ultrasonic level sensor which is having a 4-20 ma Hart Output.
while i digging the net to know how to do it.
i came across the IC RCV420.
when i gone through this single supply version
i get struck in this Pseudo Ground.. I have no idea what it is.

is it ok to connect the analog input to the 0 to 5 volts meter output? and connect the pseudo ground to the reference ground?

figure1 in the datasheet is attached.

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2

If it is okay to connect the sensor ground to the Arduino GND, then you only need a resistor for the 4...20mA and a protection resistor to an analog input.
Something like this : 0...20 or 4...20mA current loop sensors - #2 by Nick_Pyner - Sensors - Arduino Forum