So I have built an incomplete rig to measure the pressure of a setup I have in a lab. The pressure sensor is hooked up to electronics and I have not used the electronics (basic National Instruments electronics) and am not sure if did the wiring correctly. The setup I have basically has a bottle of water higher up (about 2 m up and can hold maybe a litre of liquid) and then a tube coming down to the pressure sensor. That's how I have it set up but there might be something else I have to do. I remember making these in a basic physics or chemistry lab a long time ago but am not sure how I should calculated pressure due to height difference of the water. It will give me a reading, but how will I know if it is a correct reading. Thank you for advice ahead of time! Edit: also if this is not the right place, let me know. I could post it in homework, though technically it's not a homework problem!