Mask Air Exchange Pressure Difference Tester HZ-9503

Medical Face Mask Air Exchange Pressure Difference Tester HZ-9503 is based on standard YY0469-2011 "medical surgical masks technical requirements of the test principle is the use of differential pressure sensor to put masks inner pressure and the pressure difference between the external pressure of the test items, with special tooling equipment, realize the test of sealing products.

1.Product overview:
Medical Face Mask Air Exchange Pressure Difference Tester HZ-9503 is based on standard YY0469-2011 "medical surgical masks technical requirements of the test principle is the use of differential pressure sensor to put masks inner pressure and the pressure difference between the external pressure of the test items, with special tooling equipment, realize the test of sealing products, mainly applied to medical surgical masks/mask weaving gas exchange measurement of pressure difference, also can be used to determine the differential pressure gas exchange other textile materials.

2. 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;

3. Compliance with standards:
(1) Yy0469-2011 the pressure difference of the medical surgical mask is 5.7
(2) YY/ t0969-2013 ventilation resistance 4.6 in disposable surgical mask

4. 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.

△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)

5. Technical parameters:
(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: Ф25mm;
(9) Differential pressure sensor range: 0 ～ 500pa;
(10) Display mode: Digital display pressure difference;
(11) Power supply: 220V, 50Hz.

Related Products:
Full Automatic Face Mask Making Machine HZ-K105
Full Automatic Fish Type KF94 Mask Making Machine HZ-K106
Medical Particle Filtration Efficiency Test Machine HZ-9502

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