Electro-optical level switch TOS TOS

for liquidsfor the food industryfor the pharmaceutical industry

Main features • No moving parts • Hermetic construction, sealed electronics • Minimum degree of protection IP65 About The optical sensor is located in a metallic body which includes a polysulfone prism inside of which there is inserted an infrared transceiver. As soon as the sensor is immersed in the liquid, the refraction index of the prism changes and a large part of the infrared beam is dispersed in the liquid, causing the output to change state.