The level measurement is a measurement of fluid level, the measure of height is called a level, like the fluid level in a tank. The measurement of level is very important in a process, so by doing level measurement we can make sure the process is safe. The level measurement is categorized into the top-down and bottom-up level, the top-down measurement is not susceptible to leakage or it can be considered as less leakage process. The top-down measurement could make a contact with the fluid or sometimes it won’t, while the bottom-up type makes contact with the process fluid. The level measurement is not only done for fluids it is also used to measure the level of solids.