High precision oxygen transmitter, zirconia oxygen analyzer

High precision oxygen transmitter, zirconia oxygen analyzer

The intelligent zirconia oxygen analyzer is a practical and reliable automated analytical instrument. It can work in conjunction with various electric unit instruments, conventional display recording instruments, and DCS distributed control systems to quickly and accurately detect and analyze the flue gas content generated by combustion equipment such as boilers, kilns, and heating furnaces during the combustion process. To achieve low oxygen combustion control, achieve energy-saving goals, and reduce environmental pollution.

High precision oxygen transmitter, zirconia oxygen analyzer

Selection of installation point:

The flue gas temperature at the installation point of the probe should meet the requirement of less than 600 ℃. Generally speaking, low flue gas temperature results in a long service life of the probe, while high flue gas temperature results in a short service life. The probe cannot be installed in blind spots where smoke does not flow, nor can it be installed in places where smoke flows quickly (such as expansion chambers in some bypass airways).

In addition, it is required that the flue gas leakage be small and the probe installation and maintenance be convenient. For medium and small boilers, it is recommended to install it before the economizer and after the superheater, because the flue gas flow of the boiler system from the furnace to the steam drum, passes through the superheater, economizer, and air preheater, and is recovered and treated by the induced draft fan before being discharged from the chimney. If the measuring point is too close to the outlet of the flue gas furnace, due to high temperature and fast flow rate, it will cause erosion and corrosion to the stainless steel shell of the probe, reducing its service life; If the measuring point is too biased, due to gas leakage in the flue system, the oxygen content value at the measuring point will be too high, which cannot accurately reflect the oxygen content of the flue gas in the furnace.

The reference gas for the probe is provided by natural air convection. The probe needs to be installed horizontally, with the reference gas and standard gas interfaces facing downwards. Rubber cardboard must be filled between the probe installation flange and the transition frame flange to prevent air from leaking into the flue and affecting measurement accuracy.

The probe tip must be at least 150mm away from the inner wall of the boiler, so that the exposed part of the porous ceramic of the filter faces away from the flow direction of the flue gas (the direction of the filter can be rotated separately) to avoid the ceramic body being washed away by gas and extend its service life.

When the probe is pushed into the flue, to prevent the zirconium tube from bursting, it is advisable to gradually push it in sections, generally at a rate of 10-20 centimeters per minute.