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Rosemount™ Zirconia Analyzer is an instrument used by Emerson to measure oxygen concentration. The following is a related introduction:
CX1100 Direct Insertion Oxygen Transmitter: Using a rugged zirconium oxide oxygen sensor, the measurement repeatability of 0.1% O₂ or 1.0% reading is good, and there are a variety of zirconium head length options. Optional split-mount LCD display and interface for easy access to process information and simplified maintenance.
5081FG Two-wire In-situ Oxygen Analyzer:sing a zirconium oxide sensor to measure excess oxygen in the combustion process, it can accurately measure excess oxygen in the process temperature range from 550°C to 1400°C. Both the oxygen probe and the electronics are intrinsically safe. The electronics are powered by a 4-20 mA signal line and can be configured, operated and diagnosed using a handheld infrared remote control.
OCX 8800 Flue Gas Analyzer:With a rugged design, stable sensors, electronics and software packages, it uses a well-known zirconium oxide sensor and can detect oxygen concentration in flue gas at temperatures up to 1427°C.
Oxymitter 4000 Hazardous Area In-Situ Oxygen Transmitter:measures the electromotive force of the oxygen concentration cell generated due to the different oxygen concentrations on both sides of the zirconia probe.
Working Principle
Zirconium oxide is a solid with ion conductive properties. After adding a certain amount of calcium oxide (CaO) or yttrium oxide (Y₂O₃) as a stabilizer to ZrO₂ and calcining at high temperature, it becomes a stable zirconium oxide material, which will produce oxygen ion vacancies. A platinum electrode is sintered on each side of the zirconium oxide electrolyte. When the oxygen partial pressure on both sides of the zirconium oxide is different, the oxygen on the side with high oxygen partial pressure migrates to the side with low oxygen partial pressure in the form of ions, making the platinum electrode on the side with high oxygen partial pressure positively charged and the platinum electrode on the side with low oxygen partial pressure negatively charged, generating an oxygen concentration difference potential between the two platinum electrodes. If the oxygen content on one side is known, the oxygen content on the other side can be expressed by the oxygen concentration difference potential. By measuring the oxygen concentration difference potential, the oxygen content in the flue gas can be known.
Petrochemical industry: used for oxygen content measurement in ethylene and aromatics production, hydrocracking process, inert gas reactor or container, etc.
Gas industry: can be applied to gas cylinder filling and canning, ship inert gas generator, etc. to ensure gas purity and safety.
Heat treatment industry: used to accurately control oxygen content in carbon dioxide purity detection, heat treatment industrial furnace and other scenarios to ensure process effect.
Coal-fired boiler: used to control boiler economic combustion, by measuring the oxygen content in the boiler, to achieve energy saving and consumption reduction, reduce environmental pollution and extend furnace life.
Environmental monitoring: provide accurate gas composition data in air pollution control, greenhouse gas emission monitoring, etc.
Pulverizing system: during powder making, detect and analyze the oxygen content in the inlet dry gas and outlet exhaust gas of the medium-speed mill to ensure production safety.
