I am trying my hands in wiring electrochemical sensors to Arduino. Here are those http://www.e2v.com/e2v/assets/File/sensors_datasheets/electrochem/ec4-250-no.pdf http://www.e2v.com/e2v/assets/File/sensors_datasheets/electrochem/ec4-20-no2.pdf
E2V supplied me with a document to connect to a microcontroller but I need help. Here is the link https://rapidshare.com/files/3850199261/EC_Application_Note_AN2.pdf
Please give suggestions on how to make the circuit.