Detailed introduction to the two test methods used by the protective clothing moisture permeability tester

The protective clothing moisture permeability tester is an instrument specifically used to determine the water vapor permeability of protective clothing materials such as chemical protective clothing, fire protection clothing, medical protective clothing, etc. under specific conditions. This equipment is essential for evaluating the comfort of protective clothing and the regulation ability of the internal microenvironment, especially for protective clothing worn by professionals working in high-temperature or high-humidity environments.

The protective clothing moisture permeability tester is based on the principle of water vapor permeation and usually adopts two main test methods: the positive cup method and the inverted cup method. In the positive cup method, the test sample is placed on a cup containing a desiccant, and the entire device is placed in a constant temperature and humidity environment. Water vapor is transferred from the inside of the cup through the sample to the external environment and then absorbed by the desiccant. The water vapor permeability is determined by measuring the weight change of the desiccant over a certain period. The inverted cup method places the desiccant under the sample, and water vapor passes from the external environment through the sample into the inside of the cup and is absorbed. Both methods can provide water vapor permeability data for materials, but the applicable sample types and conditions are slightly different.

Main features:

1. Accurate temperature and humidity control: ensure that the test environment is stable and simulate actual wearing conditions.

2. Sensitive quality detection: Use high-precision balance and other equipment to monitor the change of moisture permeability.

3.  User-friendly operation interface: Easy to set test parameters and read results

4. High degree of automation: Reduce human operation errors and improve test efficiency.

5. Versatility: Suitable for testing many different types of protective clothing materials.

   
   

Protective clothing moisture permeability tester is widely used in quality inspection institutions, protective clothing manufacturers, national supervision and inspection departments, scientific research institutions, etc. By testing the moisture permeability of protective clothing materials, it is possible to effectively evaluate their barrier properties to water vapor, providing a scientific basis for improving product design, enhancing wearing comfort, and ensuring the safety of the wearer.

2024-11-13 10:28