Temperature sensor in the installation and use, it shall pay attention to the following matters can guarantee measure effect: 1, improperly installed into the error, such as the location of the thermocouple installation and insertion depth cannot reflect the reality of the furnace temperature, etc. , in other words, the thermocouple should not be in too close to the door and heating, the depth of the insert should be at least 8 ~ 10 times the diameter of the protection tube;
Thermocouple protection tube and the wall between the interval of missing adiabatic material overflow or cold air invading the furnace heating, so the space between the thermocouple protection tube and furnace wall hole used refractory mortar or insulating material such as asbestos rope jam to avoid cold and hot air convection and affect the accuracy of temperature measurement;
Thermocouple cold end is too close to the furnace temperature over 100 ℃;
The installation of thermocouples should as far as possible to avoid the strong magnetic field and strong electric field, so should not be thermocouple and the power cable line in order to avoid interference caused by errors within the same catheter;
Thermocouple cannot be installed in a few measured medium flowing area, when measured with thermocouple tube gas temperature, thermocouple must be made against the flow direction of installation, and fully contact with the gas.
2, the error of the insulation deterioration and introduce thermocouple insulation, such as temperature sensor
protection tube and anchor plate too much dirt or salt slag making thermocouple electrode insulation between the furnace wall, and at high temperatures is more serious, which not only causes the thermoelectric potential loss but also can introduce interference, the resulting error sometimes can reach on baidu.
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