METHOD FOR MAINTAINING A SPECIFIED OXYGEN PRESSURE

摘要

The invention relates to automatically controlling and maintaining oxygen partial pressure (fugacity) at a stable level in a confined space. The invention has the technical result of increasing the accuracy of a process for controlling oxygen partial pressure, and minimizing the deviations of the oxygen partial pressure from a specified value in the course of the process. The method for maintaining a specified oxygen pressure in a confined space that contains an oxygen source and/or an oxygen scavenger by using an oxygen partial pressure sensor, an electrochemical pump having a membrane made of a solid oxygen-permeable electrolyte with porous electrodes which are applied to said membrane and are connected to a power supply and a control unit, involves producing voltage feedback in the power supply. The power supply output voltage applied to the pump electrodes is set according to a given law of control which is defined by an electrical dependence.