Pressure Sensor Problems

Hi i am struggling to get an accurate read out from my pressure sensor i don't think i have wrote the code correctly, the sensor can be found on RS 795-4718

it is 0 - 5 V and range of -1 bar to 24 bar can someone help me please

i believe it may actually only work over 0.5 v - 4.5V

Look up the model number on your transducer in the table on page H33 of the data sheet to confirm the output type.

datasheet