The problem of increasing the resolution of diffusion type devices is examined on an example of a pO$_2$ sensor - a meter for measuring the partial oxygen pressure used in biological investigations. A concept of resolution of the measurement device and the measurement-computer complex is formulated. A mathematical model of the pO$_2$ sensor is built. The problem of reducing the data acquired on the output of the sensor to a form which it would have on the output of a device with higher resolution is solved.
Department of Mathematics, Faculty of Physics, Moscow State University, Leninskie Gory, Moscow, 119992, Russia