In the accurate measurement of the calorimeter, the temperature of the outer barrel is the core key to determine the accuracy of the measurement results, and its setting and control are directly related to the reliability of the experimental data.

From the professional operating standards, the temperature of the outer barrel of the calorimeter usually needs to be maintained in a relatively stable range. Under normal circumstances, the temperature of the outer barrel is generally controlled at 20 ° C to 25 ° C. In some high-precision measurement scenarios, the temperature difference between the temperature of the outer barrel and the room temperature is required to be controlled within ± 0.5 ° C to minimize the interference of ambient temperature fluctuations in the measurement.

The temperature imbalance of the outer barrel will directly affect the measurement accuracy. If the temperature of the outer barrel is too high, it will cause the heat to be rapidly lost through the barrel wall, causing the calculation of the heat loss of the tested sample to be biased. If the temperature of the outer barrel is too low, it will exacerbate the heat absorption and also cause the distortion of the measurement data, which cannot meet the accurate needs of the experiment.

In order to stabilize the temperature of the outer barrel, three basic tasks need to be done: first, the outer barrel is placed in a constant temperature environment in advance to ensure that the temperature reaches the set range; second, the temperature sensor is carefully calibrated before each use to ensure that the temperature monitoring data is accurate; third, the laboratory environment temperature is strictly controlled to avoid large fluctuations in ambient temperature affecting the temperature stability of the outer barrel.

In addition, during daily maintenance, it is necessary to regularly check the integrity of the insulation layer of the outer barrel. If the insulation layer is damaged, the temperature of the outer barrel will be difficult to stabilize, and it must be repaired or replaced in time to ensure that the calorimeter always maintains an accurate measurement state.