Key Points For Installation Of Zirconia Type Oxygen Sensor Detection Unit

The probe part of the zirconia type oxygen sensor detection unit is made of stainless steel, the head shell is cast aluminum, and there are electrical connection terminals inside the shell. In addition, the external reference air and calibration gas inlets and exhaust ports of the ZO zirconia oxygen analyzer are also located on the cast aluminum casing.

1. When building a new furnace or flue, wait for the oven to dry several times before installing an oxygen probe. Otherwise, excessively humid flue gas may reduce the service life of the new probe.

2. The flue gas temperature at the installation point of the detection unit of zirconia oxygen sensor manufacturers should meet the relevant requirements. Generally speaking, if the flue gas temperature is low, the detector will have a long service life; if the flue gas temperature is high, the service life will be short. The best flue gas temperature is 300-600℃.

3. The Zirconia type oxygen sensor detection unit cannot be installed in a dead corner where flue gas does not flow, nor can it be installed in a place where flue gas flows quickly (such as in the expansion chamber of some bypass airways).

4. The flue gas leakage is required to be small, and the zirconia type oxygen sensor is easy to install and maintain. For small and medium-sized boilers, it is recommended to install it before the economizer and after the superheater, because the flow direction of the flue gas in the boiler system is from the furnace to the steam drum and passes through the superheater. The air preheater, economizer, and air preheater are discharged from the chimney after recycling by the induced draft fan. If the measuring point is too close to the flue gas furnace outlet, the temperature will be too high and the flow rate will be too fast, which will corrode the stainless steel shell of the detector and shorten its service life; if the zirconia type oxygen sensor measuring point is too far behind, due to the high flow rate in the flue system The phenomenon of air leakage will cause the oxygen value at the measuring point to be too high, which cannot faithfully reflect the oxygen content of the flue gas in the furnace.