Oxygen isn't just an essential part of the air we breathe - as a nonflammable but highly reactive element of other gases, it also plays an important role in the safety and performance of gas mixtures. However, in certain pure inert gases such as nitrogen, argon, helium and carbon dioxide, the oxygen component should be kept to a minimum. To measure even the smallest traces of oxygen in these gases, Michell Instruments GmbH - a world leader in humidity and dew point measurement - has now developed the XZR400 oxygen analyzer and launched it onto the market.

The XZR400 is so accurate that it detects oxygen components down to 0.01 ppm (parts per million) and can therefore be used to monitor purity in gas production using cryogenic air separation. Michell's MSRS zirconium oxide sensor with integrated metallic reference ensures long-term repeatability of measurements. The MSRS sensor technology doesn't require reference air, is non-depleting and gives the sensor a long service life of over seven years. Calibration is only necessary every three to six months and only needs to be performed with one reference gas, thus saving time and money. The XZR400 series is available in four configurations - rack integrated, wall-mounted, bench-mounted and transportable. All models include an intuitive touchscreen interface for quick and easy operation and barometric pressure and digital flow meters as standard.