EN14683-2019 anex C Medical Face Masks Gas Exchange Pressure Difference Detector EN14683-2019

Medical Face Masks Tester overview:

The mask gas exchange pressure difference tester (gas exchange pressure difference tester) is based on the test principle of the standard YY0469-2011 "Technical Requirements for Medical Surgical Masks". The test item is equipped with a special tooling device to achieve the test tightness of the product. It is mainly applicable to the measurement of the gas exchange pressure difference of medical surgical masks / mask woven fabrics. It can also be used to determine the gas exchange pressure difference of other textile materials.

Standards:

EN14683-2019 anex C , ASTMF2100-19, MIL-M-36954C.

Test principle:

- The vacuum pump is used to realize the power source of the test product;Use tooling fixture to achieve internal and external pressure measurement of the product, built-in differential pressure sensor;The case is in the form of an all-in-one machine with a built-in vacuum pump and digital display meter to achieve automatic pressure detection and automatic display;Equipped with a special tooling fixture, which is convenient for clamping and testing products;

- A device which measures the differential pressure required to draw air through a measured surface area at a constant air flow rate is used to measure the air exchange pressure of the medical face mask material, as show in Figure C.1. A water-filled (or digital) differential manometer is used to measure the differential pressure. A mass flow meter is used for measurement of the airflow. An electric vacuum pump draws air through the test apparatus and a needle valve is used to adjust the airflow rate.

Technical ParametersTest power source:

The principle of negative pressure : vacuum test

Temperature range: room temperature

Maximum pressure regulation: 20kpa

Sealing method: O-ring seal;

Differential pressure sensor range: 0 ～ 500pa;

Display mode: Digital display pressure difference;

About daxian company:
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