user62218: Im working on a project trying to read the pressure value from an Allen Bradley Pressure Transmitter 836P-D2NFGB20PA-D4 Ser.A 

However the pin configuration that comes on the description along with the schematics its way different that the one i used before

And the circuit im using is like this one, on the top its the circuit from the pressure documentation, and the bot one it the one im wiring on my Arduino Uno.
However on arduino im reading a constant value of 230 that does not increase nor decrease when i apply pressure to mi sensor even when the lcd on my sensor displays the correct psi value. 

#include <LiquidCrystal.h> //libreria
int V0 = 3;
int RS= 4;
int E = 5;

int D4 = 6;
int D5 = 7;
int D6 = 8;
int D7 = 9;
LiquidCrystal lcd(RS, E, D4, D5, D6, D7); //Indicar los pins de la interfaz


//Variables globales
int SensorPin= 0; //Variable del pin de entrada del sensor
int indice; //posicion del array de textos
int presion; //variable para almacenar el valor obtenido del sensor(0 a 1023)
int outputValue = 0;
int state = 0;
int prv_state = -1;

#define ARRAYTXT 4 //Numero de textos a escribir


void setup() {
  // put your setup code here, to run once:


Serial.begin(9600);
analogWrite(V0, 50);

//lcd.begin(16, 2);
//lcd.clear();
//lcd.begin(Cols, Rows);
}

void loop() {

 //Configuramos un comando de textos
  String textos[ARRAYTXT] = {"Baja presion", "Presion normal", "Alta presion", "Apagar Maquina"};


  presion = analogRead(SensorPin); //obtenemos datos del sensor
    outputValue = map(presion, 175, 1023, 0, 367);

//Indicamos los textos que se definieron en el comando texto al principio("Baja presion" = 0)
  if(outputValue < 50){
    indice = 0;
  } else{
    if(outputValue >=50 && outputValue < 100){
      indice = 1;
    }else{
      if(outputValue >=100 && outputValue < 200){
        indice = 2;
      }else{
        if(outputValue >=200 && outputValue < 350){
          indice= 3;
        }
      }
    }
  }
  //lcd.clear(); // se borran pantallas
  //lcd.setCursor(0, 0); //Escribimos en la fila de abajo
  Serial.print("PRESION: "); // escribimos mensaje en el lcd
  Serial.print(outputValue,DEC);
  Serial.println(" PSI");
  //lcd.setCursor(0, 1); //Escribimos en la fila de abajo
  Serial.println(textos[indice]); // Indicamos que imprima los indices   
  //Serial.print("Psi ");
  //Serial.println(outputValue);
  delay(200); //Tiempo para repetir el mensaje(1 segundo) 
  //lcd.clear();
}


user38721: Your drawing is different from the drawing in the wiring diagram of that sensor: the resistor has to be connected right like the "4-20mA"-block in the drawing, (-) goes to ground. Measure the voltage directly at pin 2.
When reading the sensor's analog signal you can probably leave pin 4 floating.

user405: I think this is the connection you want. Leave out the OUT connection completely and use a 250 ohm resistor (the datasheet says < 0.5 kiloohm).

62218: <p>Im working on a project trying to read the pressure value from an Allen Bradley Pressure Transmitter 836P-D2NFGB20PA-D4 Ser.A 
<a href="https://i.stack.imgur.com/bIsj8.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/bIsj8.jpg" alt="enter image description here"></a></p>

<p>However the pin configuration that comes on the description along with the schematics its way different that the one i used before</p>

<p><a href="https://i.stack.imgur.com/9dMJP.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9dMJP.jpg" alt="enter image description here"></a></p>

<p>And the circuit im using is like this one, on the top its the circuit from the pressure documentation, and the bot one it the one im wiring on my Arduino Uno.</p>

<p>However on arduino im reading a constant value of 230 that does not increase nor decrease when i apply pressure to mi sensor even when the lcd on my sensor displays the correct psi value. </p>

<p><a href="https://i.stack.imgur.com/NImDe.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NImDe.jpg" alt="enter image description here"></a></p>

<pre><code>#include &lt;LiquidCrystal.h&gt; //libreria
int V0 = 3;
int RS= 4;
int E = 5;

int D4 = 6;
int D5 = 7;
int D6 = 8;
int D7 = 9;
LiquidCrystal lcd(RS, E, D4, D5, D6, D7); //Indicar los pins de la interfaz


//Variables globales
int SensorPin= 0; //Variable del pin de entrada del sensor
int indice; //posicion del array de textos
int presion; //variable para almacenar el valor obtenido del sensor(0 a 1023)
int outputValue = 0;
int state = 0;
int prv_state = -1;

#define ARRAYTXT 4 //Numero de textos a escribir


void setup() {
  // put your setup code here, to run once:


Serial.begin(9600);
analogWrite(V0, 50);

//lcd.begin(16, 2);
//lcd.clear();
//lcd.begin(Cols, Rows);
}

void loop() {

 //Configuramos un comando de textos
  String textos[ARRAYTXT] = {"Baja presion", "Presion normal", "Alta presion", "Apagar Maquina"};


  presion = analogRead(SensorPin); //obtenemos datos del sensor
    outputValue = map(presion, 175, 1023, 0, 367);

//Indicamos los textos que se definieron en el comando texto al principio("Baja presion" = 0)
  if(outputValue &lt; 50){
    indice = 0;
  } else{
    if(outputValue &gt;=50 &amp;&amp; outputValue &lt; 100){
      indice = 1;
    }else{
      if(outputValue &gt;=100 &amp;&amp; outputValue &lt; 200){
        indice = 2;
      }else{
        if(outputValue &gt;=200 &amp;&amp; outputValue &lt; 350){
          indice= 3;
        }
      }
    }
  }
  //lcd.clear(); // se borran pantallas
  //lcd.setCursor(0, 0); //Escribimos en la fila de abajo
  Serial.print("PRESION: "); // escribimos mensaje en el lcd
  Serial.print(outputValue,DEC);
  Serial.println(" PSI");
  //lcd.setCursor(0, 1); //Escribimos en la fila de abajo
  Serial.println(textos[indice]); // Indicamos que imprima los indices   
  //Serial.print("Psi ");
  //Serial.println(outputValue);
  delay(200); //Tiempo para repetir el mensaje(1 segundo) 
  //lcd.clear();
}
</code></pre>
 38721: <p>Your drawing is different from the drawing in the wiring diagram of that sensor: the resistor has to be connected right like the "4-20mA"-block in the drawing, (-) goes to ground. Measure the voltage directly at pin 2.
When reading the sensor's analog signal you can probably leave pin 4 floating.</p>
 405: <p>I think this is the connection you want. Leave out the OUT connection completely and use a 250 ohm resistor (the datasheet says &lt; 0.5 kiloohm).<a href="https://i.stack.imgur.com/b2zab.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/b2zab.jpg" alt="enter image description here"></a></p>
