Abstract: According to the present invention an oxygen measuring cell (10) is suggested comprising inlet conduit means (28) and outlet conduit means (30) for gas to be analyzed, further comprising two nitrogen-filled gas balloons (60, 62) arranged at respective ends of a dumbbell (58) which is secured, in its middle section, to a torsion part (54) arranged in transverse relationship to said dumbbell (58) for forming a torsion balance, further comprising magnet means for producing an inhomogeneous magnetic field in the region of said torsion balance, and comprising a measuring chamber (22) surrounding said torsion balance, said measuring chamber being, at least partially, of rotationally symmetric shape, said torsion part (54) extending along the longitudinal axis of said measuring chamber (22).