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)

Dongguan Hust Tony instruments Co., Ltd ( Tony International(HK)Co., Ltd. ) has been manufacturing and developing testing machines for more than 15 years.

Our Main products are Furniture Testing Instrument, Toys Testing Equipment,Textile Testing Instrument, Leather shoes Test Equipment, Universal Testing instruments, Continue its advanced design technology and concept, excellent technology of producing and outstanding system of quality management, Tony Instruments has achieved good repute in the fields of textile testing equipments, toy testing equipments, furniture testing and other measurement test equipments. Our long-term partners include the world's two largest inspection companies SGS and TUV.

We produce equipments in line with international market testing standards, meanwhile, we provide customers with complete solutions for laboratory testing.

- Design program for laboratory

- Provision of all testing machines and consumables

- Installation and training

- Maintenance plan service

- Professional calibration and measure services

Some of our important customers, include:

SGS in France, SGS in Vietnam, SGS in China, SGS in Korea, Intertek in China, SAT in China, BACL in Shenzhen, NSF in Shanghai, ITS, BV, TUV and etc.

Sincerely administration make Tony sales network extend all over the world. Up to day Tony products spread to countrywide users. In overseas, we have customers from Vietnam, Thailand, Indonesia, Europe, Iran, Pakistan, USA, Canada, Mexico, Argentina and etc.

Our Testing machines are widely used in Textile, Toys, Furniture, packaging, footwear, leather products, environment, baby products, hardware, electronic products, plastic products, rubber products and other industries, and are applicable to all scientific research units, quality inspection institutions and academic fields.