Hi,

I'm new to circuits and electronics have no basic understanding prior to this project, please forgive my ignorance asking these basic questions and help me.
For my project I have to use a px26 omega differential pressure transducer to find out the pressure in a flow, as you know px26 works in millivolts. I use arduino and matlab to collect data. Arduino cannot detect something in milli volts, hence i have to amplify the sensor output. I have learnt that I could do this using industrial Ad620 op amp.
So, ,me being new to all this, I'm having problems using the op amp.
1) Where do i check my amplified voltage is it port 6? Vout?
2) I'm trying to amplify the voltage from 16 milli volts to about 3.2 volts(something that arduino is comfortable with) so I have used an Rg of 400 ohms. is it correct?
3) Can someone tell me the calibration procedure for this pressure sensor? I have been to about shunt calibration using a voltage divider as a reference and comparing those values to the opamp+pressure sensor circuit. What values should i compare, this is quite confusing.
I have to have this amplified voltage fed into the arduino board which connects to matlab simulink .

I have attached a circuit that I'm trying to understand.

Thanks & Regards

 

See your replies in the other forum you posted in. Carl gave you the answers to your questions.

Ron