Flue gas oxygen content is an extremely important economic operation assessment index in boiler air pollutant monitoringTo a certain extent, its value is the key to determine whether the pollutant emission concentration has reached the target. Flue gas oxygen content control is1A comprehensive, systemic problem

There is such a stipulation in the emission standards of air pollutants in various industries that the measured emission concentration must be converted into the benchmark oxygen concentration. In other words, the converted concentration shall prevail in judging whether the emission meets the standard in the performance assessment. In the case of a power plant, the converted oxygen benchmark for the concentration of flue gas pollutants from coal-fired boilers is required to be6% O2. The reason why such a provision should be made is that the emission values of pollutants can be standardized by conversion, making the values comparable.

In actual production, in order to make full combustion, excess air is generally added.(I. e., excess oxygen), which also produces a "dilution" effect, and the emission concentration of the "diluted" pollutants will naturally decrease. In addition, when the amount of flue gas is artificially increased, that is, the amount of oxygen is increased, the emission concentration of pollutants will also decrease. Therefore, doIt is possible to control the oxygen content of the flue gas at the economic index.6% -8% range. This can not only reduce the heat loss of exhaust gas, improve the thermal efficiency of the boiler, but also better control the emission of air pollutants from the boiler, in order to protect and improve the area. Ambient air quality plays a positive role.

Therefore, it is necessary to monitor the oxygen concentration in flue gas emissions. Provided by the UKSST threaded high-temperature zirconia oxygen sensor (O2 sensor) is O2S-FR-T2-18X used for combustion monitoring and control, measuring the oxygen concentration of flue gas in the combustion process, improving the combustion efficiency of the combustion device and determining the best combustion point of zui, which will help full combustion and reduce CO2, SOx and NOx emissions, thus contributing to the prevention of global warming and air pollution.

SST thread type high temperature zirconia oxygen sensor (O2 sensor) O2S-FR-T2-18X is a zirconia oxygen sensor, its sensitive element is zirconia, using two zirconia discs, in the middle of which is a sealed space. One of the disc functions is a reversible oxygen pump, which in turn fills the sample gas and evacuates this small space. The other disk is used to measure the oxygen partial pressure difference ratio and obtain the corresponding sensing voltage. The zirconia disc operates as an oxygen pump when the required temperature of 700°C is generated by the heating element (the mating circuit board O2I-FLEX-092 can provide heating and linear analog output functions.). The oxygen pump makes the time it takes to reach the rated small value and large value pressure in a small space range correspond to the oxygen partial pressure value in the environment.

Product Features:

1)       Non-expendable zirconia sensing element

2)       Oxygen pressure range 2 mbar...3 bar

3)       High stability and accuracy, measurable0-100% oxygen concentration

4)       No cross interference for other gases

5)       No temperature compensation required

6)       Built-in heating element

7)       Heater voltage: 4.35 ±0.1 VDC (1.85 A)

8)       Allowable gas temperature:-100-250°C

9)       Linear output signal

SST zirconia oxygen sensor transmission board O2I-Flex-092 interface board provides necessary power to electronic components, and users can set the range of 0-25% and 0-100% to control SST dynamic oxygen sensor. The entire measurement range is linear. The factory default is 0-25%. Customers can customize the analog output range to fit the actual application. Outputs can be configured as: 4-20mA and 0-10VDC or RS232 interface.