Face Clothing Fabric Air Exchange Pressure Difference Tester

technical parameter
1. Gas source: suction type;
2.Air flow: 8L/ Mn;
3. Sealing method: face seal;
4. Air permeability diameter of sample: medium 25mm;5. Range of differential pressure sensor: 00 ~ 500pa6. Display mode: digital display of pressure difference7. Power supply: 220 V, 50 Hz.
8. The suction gas source is used as the power source of theinstrument, which is not limited by the space of the test site,9. Equipped with high-precision pressure sensor, digital display ofpressure difference on both sides of the sample;10.The special sample holder ensures that the sample is firmlyclamped.

Test principle:
(1)Vacuum pump is used to realize the power source of the test product,(2) The internal and external pressure measurement of the product is realized by using tooling and fixture.with built-in differential pressure sensor,
(3) The case adopts the form of all-in-one machine with built-in vacuum pump and digital display meter torealize automatic pressure detection and automatic display

(4)Equipped with special jig, convenient for testing products;

Standard requirements:
(1)Number of samples: 5
(2) Test process: the flow rate of the test gas shall be adjusted to 8Lmin, The diameter of the sample testarea is 25mm and the test area is 4.9cm².

(3)Test results: yy0469-2011 and YY/ t0969-2013 both stipulated that the ventilation resistance, namelythe pressure difference of gas exchange between the two sides of the mask should not be greater than49Pa/cm² for total gas exchange.

△P=M/A
In the equation
△P-------Experimental sample area pressure difference per square centimeter (Pa/cm²)

M------Experimental sample pressure difference (Pa)
A--------Experimental sample test area(cm²)

YUYANG INDUSTRIAL CO., LIMITED (DONGGUAN YUYANG INSTRUMENT CO.,LTD) is Located in Wangjiang District (Dongguan City ,Guangdong Province, China),a famous historical town with prosperous industry and convenient transportation.

We are a high-tech enterprise which is specialized in developing and manufacturing Fire Testing Equipment, Building Material Fire Tester, Wire and Cable Fire Tester, Environmental Test Chamber, Textile Testing Equipment, Toys Testing Equipment and etc. 

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