A quick guide to types of liquid level sensors and controls from basic high and low level floats to advanced guided pulse radar level meters. Aslans level probe holder system is discussed as a means of providing a reliable means of connecting level monitoring probes without exposure to the harmful effects of corrosion. A major problem with many level probes is the electrical connections are often exposed inside the process tank and can be subject to attack by corrosive chemicals being used in the tank. This is a major problem because it can cause the failure of level monitoring equipment and result in liquid spills and even worse a hazardous waste cleanup emergency. Aslans design keeps the electrical connections outside the tank inside a sealed junction box where they are protected from the elements and the effects of process chemicals For more information please visit: http://aslantech.ca/index.php/chemical-makedown/liquid-level-sensor