The procedures for adjusting the temperature of the constant-temperature test chamber are outlined below:

1. Select the temperature setting mode:
- Manual adjustment: Use the knob on the control panel to manually select the desired temperature.
- Digital settings: Input the target temperature value directly into the control panel.
- Automatic control: Define a temperature range, and the system will automatically adjust accordingly.

2. Set the temperature range: Determine the appropriate temperature range based on experimental requirements to ensure operational stability.

3. Estimate preheating and cooling time: Calculate the estimated heating or cooling time required based on the equipment's capacity.

4. Position the temperature sensor: Place the sensor in an optimal location that accurately reflects the sample's temperature.

5. Define temperature control accuracy: Establish reasonable control accuracy parameters to maintain stability throughout the process.

6. Minimize abrupt temperature fluctuations: Avoid significant fluctuations during the adjustment process to prevent instability.

7. Allow for temperature equilibrium: After setting the temperature, allow sufficient time for the chamber to reach thermal equilibrium.