MPX5700 sensor not providing voltage output range

Hello! I am trying to read voltage at DMM from MPX5700, it is showing fix output of 0.45Volts and doesn't increasing by applying pressure. I am applying pressure with syringe.

I have also tried it arduino with analogue read but values remain same.

I have 3 to 4 sensors. All are showing same behavior? Am I doing something wrong. ? Please help.

usman_rafiq:
I am applying pressure with syringe.

This is a 700kPa/7bar/101.5psi sensor.
Try an air compressor.
Leo..