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Medical Face Mask H2O/Cm² Pressure Difference Tester

Categories Lab Testing Equipment
Brand Name: HUST TONY INSTRUMENTS
Place of Origin: Made In China
MOQ: one set
Price: 3000-4000
Delivery Time: 20 working days
Packaging Details: standard exported plywood case
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    Medical Face Mask H2O/Cm² Pressure Difference Tester

    Medical Face Mask Air Exchange Pressure Difference Tester-Differential Pressure(H2O/cm²)according to MIL-M-36954C


    Description:

    Medical Mask Differential Pressure Tester or medical face mask breathability tester, used to measure the gas exchange pressure difference of medical surgical masks and other products. Standards compliant: YY 0469-2011 medical surgical mask 5.7 pressure difference YY / T 0969-2013 disposable medical masks 5.6 ventilation resistance EN 14683: 2014 Medical face masks -Requirements and test methods


    Applications:


    Medical Mask Differential Pressure Tester or medical face mask breathability tester, is a lab testing instrument for determination breathability of medica face masks, the test principle is, through measuring the differential pressure required to draw air through a measured surface area at a constant air flow rate, to test the air exchange pressure of the medical face mask material, which indicates the breathability of medical face masks.

    Built-in water-filled 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 medical mask breathability tester and a needle valve is used to adjust the airflow rate.


    Standards:

    MIL-M-36954C

    YY0469-2011 the pressure difference of the medical surgical mask is 5.7
    YY/ t0969-2013 ventilation resistance 4.6 in disposable surgical mask


    Specifications:


    1. Test power source: the principle of negative pressure vacuum test
    2. Air flow: 8L / min;
    3. Temperature range: room temperature
    4. Sensor accuracy: 0.5%
    5. Maximum pressure regulation: 20kpa
    6. Machine weight: 25kg
    7. Sealing method: O-ring seal;
    8. Sample breathable caliber: Φ25mm;
    9. Differential pressure sensor range: 0 ~ 500pa;
    10. Display mode: Digital display pressure difference;
    11. Power supply: 220V, 50Hz.


    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 to realize 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 8L/min. The diameter of the sample test area is 25mm and the test area is 4.9cm2.
    (3)Test results: yy0469-2011 and YY/ t0969-2013 both stipulated that the ventilation resistance, namely the pressure difference of gas exchange between the two sides of the mask should not be greater than 49Pa/cm2 for total gas exchange.

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


    Quality Medical Face Mask  H2O/Cm² Pressure Difference Tester for sale
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