How can the voltage signal from the pressure sensor be converted into the pressure value displayed? Is there a conversion formula? A/D conversion looks wrong, is it through programming?
Where is the conversion? There is a linear relationship between the electrical signals produced by the pressure transmitter and its measured pressure range.For example, the transmitter outputs a voltage signal of 0-10V, and the measuring range is 0-1Mpa. The pressure change of 0-1Mpa corresponds to the voltage signal of 0-10V. 0V corresponds to 0Mpa, and 10V corresponds to 10Mpa.There is also a transmitter that outputs 4-20mA current signals, as well. Corresponding calculation can be.
Have you calibrated the pressure sensor? Or when buying, there will be a report that shows the electrical signal and the actual pressure signal corresponding
Most of them are simple linear relationships, and it's good to know the scale coefficients.