AST-60D Oxygen Sensor replaces AII-11-60 in AII-3000A and AII-3000M analyzers. AST-60D is a galvanic type micro fuel cell specific to oxygen. Expected sensor life is 60 months in air at ambient temperature and pressure. Its innovative design with proprietary Pb anode structure provides with excellent stability and ensures full utilization of the anode without signal drift thus minimizing frequent periodic calibration requirement. Sensor is designed, developed and manufactured in the USA.