When calibrating a temperature sensor using a calibration tank (temperature calibration tank), the depth of the working chamber and how the sensor is inserted are critical to the accuracy of the calibration results. 

** Working cavity depth: **

The depth of the working chamber of the calibration tank varies depending on the device model and design. In general, the depth of the working cavity is between 100 mm and 300 mm. The deeper cavity helps to reduce the temperature gradient and ensure the uniformity of the temperature field. However, the specific depth should refer to the technical specifications of the calibration tank used and the manufacturer's recommendations.

** Sensor insertion position: **

During the calibration process, ensuring the correct insertion position of the temperature sensor is essential to obtain accurate calibration data. In general, the sensor should be inserted vertically into the working chamber to ensure that the temperature sensing part is fully immersed in the liquid medium and avoid contact with the bottom or side walls of the chamber to prevent affecting the measurement results. Ensure that the temperature sensing part of the sensor is in a uniform temperature region to obtain a representative temperature reading.

** Recommendation: **

- ** Consult the equipment manual: ** Always refer to the calibration tank's user manual for recommended working chamber depth and sensor insertion guidelines.

- ** Follow manufacturer's guidelines: ** Follow the specific recommendations of the equipment manufacturer regarding operation and calibration to ensure the accuracy of measurements and the safety of the equipment.

By correctly setting the depth of the working chamber and ensuring the correct insertion of the sensor, the accuracy and reliability of temperature calibration can be effectively improved.