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2022-12-12 0 Views

Measuring principle of mask gas exchange differential pressure tester

The mask gas exchange differential pressure tester uses the suction type air source as the power source of the instrument, which is not limited by the space of the test site. It is equipped with a high-precision differential pressure sensor, which digitally displays the differential pressure on both sides of the sample, and the special sample clamp ensures firmness. The clamp sample is suitable for determining the gas exchange pressure difference of medical masks, and can also be used to measure the gas exchange pressure difference of other textile materials. It is a test equipment independently developed and produced by our company Shanghai QINSUN Precision Electromechanical Technology Co., Ltd., with high cost performance and complete after-sales service. 2WVTextile Testing Instruments, Testing Equipment Manufacturer

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Measurement principle: 2WVTextile Testing Instruments, Testing Equipment Manufacturer

Use constant air flow measurement Devices that measure the pressure difference required to draw in airmeasure through the surface to measure air exchange pressure for medical mask materials Water-filled differential pressure gauges are used to measure differential pressure Mass flow meters are used to measure air flow Electric vacuum pumps Air is drawn through the test equipment and a needle valve is used to control air flow arrange for. 2WVTextile Testing Instruments, Testing Equipment Manufacturer

2WVTextile Testing Instruments, Testing Equipment Manufacturer

2WVTextile Testing Instruments, Testing Equipment Manufacturer

2WVTextile Testing Instruments, Testing Equipment Manufacturer

Preparation for use:2WVTextile Testing Instruments, Testing Equipment Manufacturer

1. Connect the compressed air line on the host to the compressed air line or the connection of a small air compressor configured separately, open the air pump valve and connect the air pump power supply;2WVTextile Testing Instruments, Testing Equipment Manufacturer

2. Put the mask on the aluminum fixture Fixed end; 2WVTextile Testing Instruments, Testing Equipment Manufacturer

3. Pull the valve by hand to push the sliding armature on the other side to the fixed position and tighten the mask;2WVTextile Testing Instruments, Testing Equipment Manufacturer

4. The outside of the mask is directed towards the sliding end piece. 2WVTextile Testing Instruments, Testing Equipment Manufacturer

Determination of the compositionof the sample holder:2WVTextile Testing Instruments, Testing Equipment Manufacturer

1. The sample holder must consist of a mechanical clamping system and alignment of top and supports. 2WVTextile Testing Instruments, Testing Equipment Manufacturer

2. The sample container must include a mechanism to adjust the clamping pressure. A threaded system can be used on the bottom or top of the sample container. 2WVTextile Testing Instruments, Testing Equipment Manufacturer

3. The inner diameter of the upper support and the lower support in the contact area with the filter material should be mm. 2WVTextile Testing Instruments, Testing Equipment Manufacturer

4. The sealing of the top and bottom brackets to the filter material should be metal-to-metal contacts. 2WVTextile Testing Instruments, Testing Equipment Manufacturer