KOBOLD’s OPT level switch is well suited to act as a level limit detector for various process liquids. Its small geometry ensures a very low switching hysteresis of merely ±1 mm. Our optical design is free of any moving parts, thus increasing product reliability immensely. The unit is completely self-contained; both the LED light source and the photodetector are housed behind the same lens. Fluid contacting the lens exterior changes its reflective properties, thereby allowing switching to take place through monitoring of the light level striking the internal detector. This optical design can be used with clear, translucent and opaque liquids.
