2. At the place where the power line is introduced, it is required to install the power switch, and then do not control the main power supply. In order to ensure safe operation, the box type resistance furnace and the controller must be firmly grounded.

 

 

 

3. A thermocouple is pulled out of the furnace platform for 20-50mm, and the space between the hole and the thermocouple is filled with asbestos rope. Connect the thermocouple to the control better with the compensating wire or insulated steel core wire, pay attention to the positive cathode, and do not connect it reversely.

 

 

 

4. After checking and receiving the report and confirming it is correct, cover the controller shell. Adjust the setting probe of the temperature indicator to the required task temperature, and then connect it to the power supply. Turn on the power switch, when the green light on the temperature indicating measuring tool is on, the task of the relay begins, the box resistance furnace is powered back, and the DC meter shows DC power. With the decrease of the external temperature of the box resistance furnace, the needle of the temperature indicating measuring tool also drops gradually, which indicates the task of the system.

 

 

 

5. Before using, adjust the thermometer indicator to two points. When using the make-up wire and the cold end compensator, adjust the two points of the machine to the standard temperature point of the cold end compensator. If the make-up wire is not used, adjust the two points of the machine to the zero scale position, but the temperature indicated is the time difference between the measurement point and the cold end of the thermocouple.