Go Down

Topic: analog input with Pseudo Ground (Read 422 times) previous topic - next topic

anilkunchalaece

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.

Peter_n

#1
Feb 26, 2015, 02:15 pm Last Edit: Feb 26, 2015, 02:16 pm by Peter_n
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 : http://forum.arduino.cc/index.php?topic=188067.msg1391860#msg1391860
Is millis() a 'he' or a 'she' ?

Go Up
 


Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

Arduino
via Egeo 16
Torino, 10131
Italy