int rawValue; // A/D readings
int offset = 67; // zero pressure adjust
int fullScale = 922; // max pressure (span) adjust
float pressure; // final pressure

void setup() {
  Serial.begin(9600);
}

void loop() {
  rawValue = analogRead(A0);
  Serial.print("Raw A/D is  ");
  Serial.print(rawValue);
  pressure = (rawValue - offset) * 1.2 / (fullScale - offset); // pressure conversion to maps
  pressure = (pressure * 145.038); // mpa to psi
  Serial.print("   The pressure is  ");
  Serial.print(pressure, 3); // three decimal places
  Serial.println("  PSI");
  delay(500);
}