Tank level controls exist in many cooling tower water evaporation systems as well in some of the dry systems that do use evaporative cooling on their cooling tower. Not every cooling tower water evaporation system has the tank level controls because when the system is dealing with just water there is a high chance that there is no danger of the tank getting overfilled or being too low on liquid content.

Tank level controls are primarily used in conjunction with a type of water float switch. The cooling tower water float switch will be set so that when the level of liquid in the tank drops to a certain level the tank level controls allow an electrical connection to be completed so the fluid level can be increased.

Then tank level controls can also be set so that when the liquid in the tank rises to a certain point the electrical connection will be broken and the liquid will stop entering the tank. Some of these systems also have alarms connected to them so they alert people to dangerous levels. These alarms are extremely handy when the cooling tower water system is in use at a chemical plant or a nuclear power facility.

Not all cooling tower water evaporation systems are placed on items with critical needs like the nuclear power stations. Some of these devices are actually used on items in and around your home. You definitely have a cooling tower water evaporation system installed as part of your heating and air conditioning units if you use central heat and air. The water that is condensed during the operation of those units must be evaporated or removed from the unit.

There are also towers that are very large and built near the devices they are helping to maintain. These large units are generally used in plants and at large companies. Liquid that is stored in tanks may not always be water so the tank level controls in these facilities almost always have the alarms to alert of potential dangerous levels. Refineries that work with gasoline and liquid oil products all have tanks to house those items in, and tank level controls to maintain them.
Imagine that the tank that is located on the back of your toilet had no float switch to stop the water from rushing in. You would have to manually cut the water supply to the tank off after every flush or your toilet will overfill with water and you would have a mess to clean up, not to mention an outrageous water bill. The way that the float switch in that simple household device operates is basically the way the controls in those huge liquid chemical tanks work. The biggest difference is the ones inside your home are normally made of plastic while the ones that are in those large tanks are generally made of a high grade stainless steel that resists rusting and corrosion.

It takes a lot of different components to maintain the cisterns on wells, chemical storage tanks, and even the gasoline tanks located in your vehicle. Normally we do not really consider how these items work until they stop working correctly.

Tank level controls http://www.waterlinecontrols.com/products-page/cooling-tower-water-level-controls on cooling tower water http://www.waterlinecontrols.com/products-page/cooling-tower-water-level-controls evaporation systems exist to protect the device and to make certain that the proper levels of fluid are maintained in situations that could be catastrophic if they were not.