Oxygen Pump and Oxygen Sensor as Extension of the Electromagnetic Levitator on International Space Station

An extension of the Electromagnetic Levitator (EML) to be operated on-orbit in the Columbus Laboratory of the International Space Station (ISS) is shown. The fully autonomous oxygen sensing and control system (OCS) bases on high-temperature yttria-stabilized zirconia electrolytes and enables precise measurement and adjustment of oxygen partial pressure within 10(exp -1) to 10(exp -24) bar in the EML processing gas. The principle of operation as well as system design required for the operation at ISS are discussed.