Oxygen analyzer 3010MA

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Teledyne's Model 3010MA Paramagnetic Percent Oxygen Analyzer is a versatile, microprocessor-based instrument specifically designed for oxygen purity analysis. Drawing on the solid performance of Teledyne's 3000 Series control platform, the 3010MA provides the user with a wide variety of features while maintaining cost effectiveness. Principle of Measurement The physical property distinguishing oxygen from other gases is its paramagnetism which is significantly greater than that of other common gases. Consequently, the molecules of oxygen are attracted by strong magnetic fields, a phenomena which can be used for detection purposes. A paramagnetic sensor consists of two spheres arranged in the form of a dumbbell suspended in a symmetrical, non-uniform magnetic field. When the surrounding gas contains oxygen, the dumbbell spheres rotate out of the magnetic field by the relatively strong attraction of oxygen. A light beam focused on a mirror attached to the ​dumbbell reflects asymmetrically onto two photo diodes resulting in a voltage shift. The voltage difference produces a current used to drive the dumbbells back to the original position. The current flow required to maintain the null position is directly proportional to the oxygen concentration and is shown linearly in volume percent oxygen in the display. Properly maintained paramagnetic sensors last for years with little or no upkeep.