Water has the highest density than anything else present on this planet. This is proven by the ships that are made with tons of steel and they also carry tons of weight on their decks and in their cargo holds. Ships are now a hundred times bigger and made of more solid steel than ever before. It is understood that as the size and body of the ship is increased, the weight has also increased which on the contrary has made a ship more stable. Ships are not only being used to transport goods and merchandise from one country to another, they are also a huge part of the army, better known as the navy.

Another great carrier used in the navy by the armies is the submarine which is a class above every technology designed by humans today. The unsinkable submarine can only sink when it is commanded to do so. As it attacks from under the water, it sinks to the depths and analyzes the surface hitting the unsuspecting targets from below. The mechanism installed in it to gain a density more than water is the only thing that allows it to go below the surface and still be in working condition.

A submarine has special hatches all around its body which suck in water to gain density and go beneath the surface of water. When it needs to rise, the hatches again open and pump out the water that has been sucked in, as a result it becomes less dense and starts rising to the surface. Controlling the presence of water in the submarine’s hatches is a task for the liquid level indicator installed in it. With the help of the indicator, the crew, or the captain decides when the level is perfect and they can keep sailing without being seen.

Since most of the ordinary liquid level indicators can crack or break when under a huge water pressure, they can give false readings and the submarine could end up in an accident. If the accident occurs under water there would be no way to save the crew. That is why to keep the functions unharmed by the pressure of water that mounts up massively when under water; the ultrasonic level indicator is fitted in the modern machines. Its ability to measure digitally and the power to withstand the pressure make it the best fit for a machine of this type.