Due to the massive increase in population all over the globe, the demand for products has not doubled but it has multiplied massively. Everyone is running a race to own the best products and this has resulted in a massive demand for newer products. With the increased demand of products, the factories are required to produce massively. We need bigger and more sophisticated factories to manage the huge demand and to fill the demand and supply gap.

On the flip side, many new factories have been setup and the older factories have upgraded their machinery and restructured to produce more effectively. The restructuring has not been an easy task and to manage the massive supply has resulted in the factories to run at least three shifts on a daily basis. Managing the shifts can only be possible by having adequate supply of the necessary ingredients. Since quality has to be controlled and maintained, it is necessary to have every ingredient present at all times.

Liquids are widely used in the factories. There are all sorts of liquids being used in factories on a massive scale. Liquids that are harmless such as water, and liquids that are extremely hazardous and corrosive such as acids. Managing them all in a single place is not possible so the factories have expanded their territories and assigned special areas for the different types of liquids. The liquids are contained in giant sized containers fitted with a liquid level indicator for measurement.

It is necessary to have a complete record of the usage of liquids. Unless the level of liquids present in the storage tanks is known, planning the production ahead can never be made possible. To streamline the production and the management system of the factories that house thousands of workers and machines under one roof, different departments have been created to handle their tasks. Obviously production comes under the production department and shipping comes under the logistics department.

Liquids that are highly corrosive and hazardous are contained in specially designed containers which are widely famous with the name, "single skinned containers”. These containers are not able to be measured by the simple indicators due to the liquids they hold. These containers are measured by the ultrasonic level indicator which has the ability to measure from outside the walls of the containers. Using the ultrasonic device the measurements are taken and the daily report is created which helps in planning the production targets.