Liquid management is becoming an issue in the factories these days. Due to the massive amount of liquids being used in the factories, the demand of liquids has increased from some gallons per day to thousands of gallons per day. This new demand of liquid has raised many concerns about the working environment in the factories because most of the liquids used are of hazardous nature. The use of highly toxic acids is becoming a common thing in the factories. Their uses are diverse, from being used as cleaning agents to being mixed in batters; it has become necessary to have a large quantity in the factories.

Most of the toxic and hazardous liquids emit fumes regularly which are toxic enough to kill the people around it. This is the reason why most of these liquids are kept in single skinned containers. These containers are required to be kept far away from places where people are working. The chimney installed in the containers serves as an outlet for the toxic fumes which are released in open air. Since it is necessary to know the exact amount of liquids present in the single skinned containers, each container is fitted with a separate liquid level indicator.

There are many types of indicators which can be fitted with the containers. Some are fitted right next to the container because they have a short range of detecting liquids, while some indicators can detect from a distance. In either case, a special person is allotted the task to note down regular readings at the prescribed timings. A complete record is kept which can tell the staff about the daily consumption of the liquid. Knowing about the amount of liquid being used helps the production managers to plan their production targets accordingly. When the levels are down, the procurement department is informed to arrange a refill while there is still time.

Some special liquids (highly corrosive) are known to break the installed liquid level indicators. Because of their highly corrosive property, they break the mechanism of the indicators that are in direct contact with the liquids. For this purpose a special indicator is used which is popularly known as the ultrasonic level indicator. The ultrasonic device is unique as it does not require coming in contact with the liquid. The transducer is placed on the wall of the container from where it passes the ultrasonic rays right through the wall and detects the liquid level. The level is then visible on the device’s LCD from where the person taking the measurements can note down the liquid level.