The difference between paramagnetic oxygen analyzer and zirconia oxygen analyzer
Zirconia oxygen analyzer: the measured gas (flue gas) through the inner sensor into the zirconia tube, the reference gas (air) through natural convection into the sensor outside, when the oxygen concentration inside and outside of the zirconium pipe is not at the same time, the zirconia tube inside and outside oxygen concentration potential (in reference gas under conditions of uncertainty output, zirconia oxygen concentration potential and sensor temperature and the measured gas concentration is a function relationship between the oxygen concentration potential) was transformed into display instrument and the measured oxygen content in flue gas is the standard signal linear relationship, RHO instrument display and output.
Paramagnetic oxygen analyzer: an analytical instrument for measuring oxygen content in gases, based on the principle that the volume of oxygen is much higher than that of ordinary gases, and that the magnetic field has very high paramagnetic properties. A paramagnetic oxygen analyzer, also called a magnetic effect oxygen analyzer or a magnetic oxygen analyzer, is usually referred to as a magnetic oxygen analyzer. It is generally divided into three types: heat magnetic convection type, pressure mechanical type and magnetic pressure type oxygen analyzer.
The difference between the two applications,1 zirconium oxideIs mainly used in the measurement of the oxygen content in the furnace, occupy most of this type of application.Advantages: strong adaptability and corrosion resistant detector, dust and water, the technology is mature, the price is cheap, do not need tedious pretreatment, direct measurement, measurement stability.Disadvantages: process the atmospheric pressure near the measurement of gas flow rate is not too high, the application has some limitations. Of course, micro or high-pressure measurement applications also have a very small number.2 paramagnetic oxygen analyzerEffect of from sample gas pressure, through the pretreatment of vacuum dehydration dust and other means of measuring, high precision than zirconia.Is expensive, usually pretreatment maintenance accounts for the main work, also need to have some spare parts support.In heating furnace application, this instrument can also be measured, should be more widely.On accuracy: all manufacturers actually are not a lot of difference, the key is in poor condition, who is the most resistant, who has the best stability. Background gas composition is one of the key factors that affect him, and the type selection needs to be considered.Magnetic pressure analyzer: such as SIEMENS, one of the biggest advantages of the sample gas, and do not contact the sample gas detector, even dirty, within a short period of time there is no effect on the detector, maximum protection
