there is a boiler of capacity of 150 lb/hr. steam is being consumed in multiple machines. my area of interest are three particular machines and i want to find out how much amount of steam is being used by each machine. there are no flow meters installed. all i can see is a pressure gauge at the inlet of a machine (dryer) and the reading is 35 psi. and the pressure at the outlet of the boiler is about 135 psi. How can i find out the steam consumption in dryer and other machines using pressure reading?