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.
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Chemical and Pharmaceutical
Working Pressure: 260 bar max (25°C) or 200 bar max (85°C)