It is critical to select a float switch that is constructed from the right materials that are compatible with the liquids and temperatures of the particular application. Component damage as a result of incorrect materials selection can ultimately cause failure of a float switch, which may have severe consequences.
Selection of the most suitable materials for both float switch and gasket can be made by referring to a ‘Chemical Compatibility’ table. These tables provide a good indication of the suitability of the various float switch materials in a wide range of liquids. For some process liquids, it may be necessary to obtain a sample float switch in order to test the compatibility.