The condensation phenomenon in the constant temperature and humidity Test Chamber is usually due to the high relative humidity inside the Test Chamber, which causes the moisture in the air to condense on the surface of the sample and the Test Chamber to form water droplets or freezing points.
reason
Excessive relative humidity inside the chamber can be caused by:
1. The heating element in the Test Chamber is uneven, resulting in excessive temperature in some areas, and condensation occurs after the dry air with low relative humidity is mixed with humid air with high relative humidity.
2. The refrigeration system in the Test Chamber fails, and the temperature inside the Test Chamber cannot be lowered in time, causing the moisture in the air to condense on the surface of the sample and the Test Chamber to form water droplets or freezing points.
3. The internal ventilation of the Test Chamber is poor, and the air circulation in the Test Chamber cannot be maintained, so that the water vapor cannot be discharged in time, and the relative humidity gradually increases.
Solution
In order to avoid the occurrence of condensation, the following measures can be taken:
1. Reasonably adjust the heating and cooling system inside the Test Chamber, keep the temperature and humidity inside the Test Chamber within an appropriate range, and prevent excessively high or low humidity.
2. Choose an appropriate test method to avoid excessive humidity during the test.
3. Strengthen the ventilation of the Test Chamber to ensure the air circulation inside the Test Chamber and avoid water vapor staying inside the Test Chamber, resulting in excessive humidity.
4. The sample should be kept dry before placement to reduce the evaporation and release of water from the sample.
In short, when using a constant temperature and humidity Test Chamber, attention should be paid to keeping the temperature and humidity inside the Test Chamber stable, and avoiding the occurrence of condensation caused by excessively high or low humidity.
