What should I do if the temperature display of the continuous feeding and discharging rotary tube furnace is incorrect?

When the temperature display of the continuous feeding and discharging rotary tube furnace is inaccurate, the following steps can be taken to solve the problem:
1. Check the temperature sensor
①. Sensor status:
The temperature sensor is a key component for temperature control in tubular furnaces, and its accuracy directly affects the correctness of temperature display. Therefore, the first step is to check if the temperature sensor is working properly.
②. Sensor location:
Ensure that the temperature sensor is installed in the correct position and that the measuring points are representative and can truly reflect the temperature inside the furnace. If the position is not appropriate, it may cause temperature display deviation.
③. Sensor calibration:
If there is suspicion of a problem with the temperature sensor, a standard thermometer can be used for comparison and calibration to verify its accuracy. If significant deviation is found in the sensor, it should be replaced promptly.
2. Check the temperature controller
①. Controller function:
The temperature controller is responsible for receiving signals from the temperature sensor and controlling according to the set temperature value. If the temperature controller malfunctions or is set improperly, it may also cause inaccurate temperature display.
②. Controller settings:
Check the setting parameters of the temperature controller, such as temperature range, control accuracy, etc., to ensure that they meet the usage requirements. If set improperly, adjustments should be made.
③. Controller maintenance:
If the temperature controller malfunctions, such as a damaged display screen or incorrect control logic, it should be promptly repaired or replaced by contacting the manufacturer or professional maintenance personnel.
3. Check the heating element and control system
①. Heating element status:
The heating element is the heat source of the tube furnace, and its working state directly affects the temperature inside the furnace. If the heating element is damaged or the power is insufficient, it may cause the furnace temperature to fail to reach the set value or experience significant temperature fluctuations. Therefore, it is necessary to check whether the heating element is intact, and if it is damaged, it should be replaced in a timely manner.
②. Control system stability:
Check whether the control system of the tube furnace is stable and reliable, such as whether the PID control algorithm is appropriate and whether the control circuit is in good contact. If there is a problem with the control system, it should be repaired in a timely manner.
4. Other possible reasons and solutions
①. Sealing of furnace body:
Poor sealing of the furnace body may also lead to inaccurate temperature display. If there is gas leakage in the furnace body, it should be repaired in a timely manner to improve the sealing performance.
②. Gas flow rate:
For tube furnaces using gas heating, it is also necessary to check whether the gas flow rate is stable. If the gas flow rate fluctuates greatly, it may affect the uniformity and stability of the temperature inside the furnace. At this point, the gas flow rate should be adjusted to maintain stability.
③. External interference:
Exclude the influence of external interference factors on temperature display, such as electromagnetic interference, vibration, etc. If there are external interference sources, corresponding shielding or isolation measures should be taken.
5. Summary
To solve the problem of inaccurate temperature display in continuous feeding and discharging rotary tube furnaces, it is necessary to start from multiple aspects, including checking temperature sensors, temperature controllers, heating elements, and control systems. At the same time, attention should be paid to factors such as furnace sealing, gas flow rate, and external interference. Through comprehensive investigation and timely handling of fault points, the temperature display of the tube furnace can be ensured to be accurate and reliable, thereby ensuring the smooth progress of the production process.