WRN - 530 prefabricated thermocouple nots allow to ignore to improper installation error introduced by the release date: 2019 - 07 - 19 reading

For the right to use WRN - 530 prefabricated thermocouple can not only get a temperature value accurately, ensure the production of products rate, but also can save fabricated thermocouple materials consumption, save money and can guarantee the quality of the product. If the installation is not correct, thermal conductivity and time lag error, they are main error of the thermocouple is in use. Below together with Shanghai automation instrumentation three factory to understand and know the thermocouple improperly installed into error. Improperly installed into the error of the 1. 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; 2. 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; 3. Thermocouple cold end is too close to the furnace temperature over 100 ℃; 4. 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; 5. 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.