Intelligent air permeability tester is used to test the air permeability of meltblown fabrics, nonwovens, protective clothing materials, special industrial fabrics, general fabrics, sponges, knitted fabrics, coated fabrics, nonwovens and industrial filter paper. Next, Qinsun Instruments Co., LTD will give you detailed answers.
Maintenance of intelligent air permeability tester:
1. This air permeability tester is a high-precision equipment, and collision and violent turbulence are strictly prohibited during moving and transportation.
2. The instrument has been calibrated when leaving the factory, and the internal devices of the instrument should not be repaired by non-* personnel.
3. Instrument accessories (nozzle, nozzle seat, orifice plate and sample setting ring) are directly related to the test accuracy, so it is not allowed to wipe them directly with a rag. If there is any contamination, the dust on the surface should be blown by the ear-blowing ball.
4. During the test, do not touch the sample, so as not to affect the air permeability of the sample.
5. The nozzle diameter should be selected according to the air permeability of the sample. For the sample whose air permeability is unclear, it is necessary to test it several times to make it better reflect the air permeability of the sample.
6. The filter screen in the airflow measuring cylinder should be cleaned regularly depending on the frequency of use.
7. If the instrument is tested for a long time, and the pressure difference is unstable and the noise of fan is too large continuously, stop the machine to check the air tightness of each component or whether the selected test piece is within the range.
8. For samples with different thicknesses, the position of the pressure head of the sample should be adjusted so that it can press the sample tightly.
9. Air permeability testing is related to air pressure, so it is recommended to proofread it once every working day, and the instrument proofreading should be carried out by special personnel.
10. There are precision sensing elements in the air flow measuring cylinder, so the action should be gentle when changing nozzles and cleaning, so as to avoid accidents.
11. The air tightness of each seal joint directly affects the test accuracy, so care should be taken for contamination, deformation and damage.
12. Select nozzle number: It is recommended to make the dynamic pressure difference fall within the range of 600 ~ 3000 Pa to obtain more stable test results.
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