How to measure the pressure from the strain gauge


I bought a strain gauge from RS components, and I want to find out how can I get the pressure from the measured voltage on the strain gauge. I managed to the Wheatstone bridge and supply it with a voltage as Vex.

Based on this document, the manufacturer will provide the conversion formula but on the PDF manual here is what I only found. Can someone help me or supply any reference on how can I compute the pressure?

Best Answer

You will probably need to calibrate it yourself. Put some known stresses on it and see what it does. I used to work in industrial automation, and every one of the scales had to be calibrated in-place when empty and with at least one test weight before it would even be close to accurate.