Optical Liquid Level Sensors for Elevated Temperatures

They are used to monitor the level of liquids of different composition. Depending on the type, they are able to distinguish liquid from foam (beer, cola-type drinks), or detect oils or emulsions. They are suitable for use in the food and beverage industry. Use at a higher temperature of the medium enables their use also in CIP and SIP processes. The principle of use is to monitor the presence of liquid in containers or pipes, e.g. of its upper and lower levels – protection against overflow, protection against the pump running on empty, etc.