Introduction to the installation and use of the muffle furnace

The muffle furnace is a cyclic operation type. It is used in laboratories, industrial and mining enterprises, and scientific research units for element analysis and determination and for heating of general small steel parts such as quenching, annealing, and tempering. The furnace can also be used for sintering, dissolving, and dissolving metals and ceramics. For high temperature heating such as analysis.

The following is an introduction about the installation and use of the muffle furnace:

1. A thermocouple is inserted into the furnace for 20-50mm, and the gap between the hole and the thermocouple is filled with asbestos rope. Connect the thermocouple to the control compensation wire (or use insulated steel core wire), pay attention to the positive and negative poles, and do not connect them in reverse.

2. A power switch needs to be installed at the lead-in of the power cord to control the total power supply. In order to ensure stable operation, the electric furnace and the controller must be reliably grounded.

3. Before use, adjust the thermometer indicator to the zero point. When using the compensation wire and cold junction compensator, adjust the mechanical zero point to the reference temperature point of the cold junction compensator. When the compensation wire is not used, the mechanical zero point Adjust to the zero scale position, but the indicated temperature is the temperature difference between the measuring point and the cold junction of the thermocouple.

4. After opening the package, check whether the muffle furnace is intact and whether the accessories are complete. Generally, no special installation is required, and it only needs to be placed flat on a flat floor or shelf indoors. The controller should avoid vibration, and the location should not be too close to the electric furnace to prevent internal components from not working properly due to overheating.

5. After checking the wiring and confirming that it is correct, cover the shell of the high temperature muffle furnace controller. Adjust the setting pointer of the temperature indicator to the required working temperature, and then turn on the power. Turn on the power switch. At this time, the green light on the temperature indicating instrument is on, the relay starts to work, the electric furnace is energized, and the current meter is displayed. As the internal temperature of the electric furnace rises, the pointer of the temperature indicating instrument also gradually rises. This phenomenon indicates that the system is working normally. The heating and constant temperature of the electric furnace are respectively indicated by the traffic lights of the temperature indicator, the green light indicates the temperature rise, and the red light indicates the constant temperature.