How to maintain the high temperature muffle furnace?

1. The instrument should be placed in a dry, ventilated, non-corrosive gas center, the task condition temperature is 10-50 ℃, the absolute temperature is not more than 85%.

2. In order to ensure the accuracy of the measurement, the current level difference meter is used to calibrate the thermometer of the XMT temperature controller every year to avoid large errors.

3. Check whether all the hotlines are loose, whether the contacts of the exchange contactor are good, and if any faults arise, they should be repaired in time.

4. Digital display muffle furnace silicon carbide rod type furnace, after discovering that the silicon carbide rod is protected, it should be replaced with a new silicon carbide rod with the opposite specification and similar resistance. When changing, first remove the shields and silicon carbide rod chucks at both ends, and then store the protected silicon carbide rods. Because the silicon carbide rods are easy to break, care must be taken when installing them. The head must be fastened to make good contact with the silicon carbide rod. If the chuck is severely oxidized, it should be replaced with a new one. The gaps in the device holes at both ends of the silicon carbide rods are blocked with asbestos ropes. The furnace temperature did not exceed the maximum task temperature of 1350℃. The silicon carbide rods have promised to continue their tasks for 4 hours at the highest temperature. After using the box-type muffle furnace for a short period of time, if the heating power adjustment button is adjusted to the maximum position in the counterclockwise position, the heating direct current still does not go up. The extra value of the interval is far, and the required heating power is not reached, indicating that the silicon carbide rod has been aging. At this time, the parallel silicon carbide rods can be changed to series, and they can still be used continuously. When changing the connection method, there is no need to assemble the silicon carbide rod, just change the connection method, and after changing the connection method, pay attention to the turbulent adjustment of the heating power adjustment button when using it, and the heating DC value does not exceed the extra value.