setting up differential pressure sensor

Projects General Guidance
1

Need help.

I have the MPX5050DP differential pressure sensor. There are 6 pins; V-out, V-ground, VCC, V1, V2, V-EX.

  1. How to hook this up to arduino nano. I tried ..
  • VCC to 5V
  • V-ground to ground
  • V-out to A0
  1. I used the example sketch to AnalogReadSerial or ReadAnalogVoltage but no luck.

Any advice is appreciated.

2

What does the data sheet tell you about how the interface is intended to work?

3

The data sheet gave me the pin locations but not much more guidance.

4

It looks like you had it connected properly. Pin 1 (with notch) to Vout, pin 2 to ground and pin 3 to 5V. If you connect Vcc to 5V and ground to ground can you measure, with a meter, the output? Just to verify the sensor.

5

The data sheet confirms it's designed to be powered with a nominal 5V between Vs and Gnd and produces an analog output signal in the 0-5V range on Vs. Ignoring the Arduino, if you just connect 5V across it and measure the voltage on Vs you should see a voltage in the 0-5V range which varies with differential pressure.

6

Actually 0.2 to 4.7 Vdc is the nominal output.

7

Got it working. Thank you everyone.

8

Hi filo47,

I'm planning to buy the MPX5050DP. How did you connect the pins to the Arduino?