Image based instrumentation plays a vital role in modern diligences on evaluating the attributes of end products requires to be precisely conserved beneath the militant commercial world, which claims the virtue material. In this work, we focus on measuring the liquid level in process control water level indicator using image based instrumentation technique. The fluid level is assessed by constructing a binary image histogram. By planting the suggested scheme on the river flow and examining the liquid-level measuring process in the current scenario, its competency has been substantiated. This scoping system can also mount the way for achieving the in demand accuracy in Integrated Steel Plants.