I have a machine which has belts with three pulleys, one of them is connected to the motors,the one in the middle moves to tighten the belt, and the third is idle pulley. This belt assembly sits on a plate and a strain gauge is attached to the plate. The function of the belts are such that they will pull a fiber by gripping on it and the strain gauge is for measuring the tension in the fiber. The engineer who designed this is no longer available and I don't know how to convert the readings from the strain gauge into tension. I have attached the assembly image, can anyone tell me how to calculate tension in the fiber that is being pulled by the belts from the strain gauge measurements?
Please let me know if additional details are needed.