Azbil Model: HPT032/T032E/T034/T034E Pipe Mounted Liquid Level Fiber Units provide reliable detection with an array of 16 optical axes that eliminate the effects of air bubbles and water droplets. The unit has a PFA chemical-resistant jacketed fiber and fits a wide variety of pipe diameters. Fail-safe detection can be provided by using different sensing methods (LO/DO) for the upper and lower detection limits in a tank.