Michell XZR400 series oxygen analyser for cryogenic air separation

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Cryogenic air separation is used to produce high-purity oxygen, nitrogen, argon and carbon dioxide, and highly accurate oxygen measurements are a crucial part of the quality assurance process. The Michell XZR400 series oxygen analyser uses Michell’s MSRS zirconium oxide oxygen sensor, which contains a metallic sealed reference and ensures long-term repeatability of measurements as no reference air is required. Unlike electrochemical sensors, which require regular replacement, the MSRS sensor of the XZR400 should last in excess of seven years. Calibration is not needed as frequently either (every 3–6 months) and can be carried out with just one calibration gas, saving time and money.

The XZ400TS was found in test to operate at an accuracy of 0.1 ppmv using a 10.5 ppmv test gas, with the unit displaying exactly 10.5 ppmv.

The XZR400 range features three configurations: rack, wall and bench mount. All models include an intuitive touchscreen interface for quick and easy operation, barometric pressure, digital flow meters and a 4–20 mA output as standard. Options include additional outputs such as Modbus RTU over RS485, RS232 and process pressure correction.