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Interpretation of the detection principle of the melt blown cloth tester

The melt blown cloth tester pft-01 developed and produced by Jinan Zhongce Electromechanical Equipment Co., Ltd. can quickly and accurately measure the filtration efficiency of filter protection equipment and materials. Salt aerosol or oil aerosol can be used as test carrier to meet the requirements of relevant standards.

 

熔喷布测试仪

Melt blown cloth tester pft-01 testing instrument



The melt blown cloth tester pft-01 adopts advanced technology and microprocessor control, and is designed with a good user interface and setting mode, which can simplify training and operation. The test result is directly displayed, which is intuitive and convenient.



Main parameters of melt blown cloth tester pft-01:


Generic name: particulate matter filtration efficiency tester


Other names: Melt-blown cloth filter detector, melt-blown cloth particle filtration efficiency PFE tester, melt-blown cloth particle filtration performance test bench, melt-blown cloth filtration test instrument, melt-blown cloth test instrument


Over-rate efficiency detection range: 0-99.999%


Accuracy: Level 1


Over-rate efficiency detection flow meter range: 10-100L/min


Flowmeter accuracy: 2.5 level


Sampling frequency: 1-9999 times/min


Filtration efficiency, particle concentration: 20-30mg/m3


Counting median diameter: salt particles (0.075±0.02) μm, oil particles (0.185±0.02) μm


Geometric standard deviation of particle size distribution: salt particles ≤ 1.86, oil particles ≤ 1.60


Dynamic detection range: 0.001-100) mg/m3, accuracy 1%


Host power supply: 220VAC 50Hz


Host net weight: 64 kg


Instrument configuration: host, computer, professional software, aerosol generator, laser dust particle counter, glass rotameter, vacuum pump



Oil mist method


Dry and oil-free compressed air enters the aerosol generator at a certain flow rate to produce aerosols with a certain particle distribution. After being screened by the cascade impactor, the particles with the particle size distribution meeting the standard requirements are discharged from the aerosol outlet and enter the test pipeline.


And to the filter material, pressure difference sensors are installed on both sides of the filter material, and the number of particles in the upstream and downstream of the filter material is monitored during the test; the whole test process is carried out with a certain flow or air volume.




Salt spray method:


Dry and oil-free compressed air enters the aerosol generator at a certain flow rate to produce aerosols with a certain particle distribution. After being screened by the cascade impactor, the particles with the particle size distribution meeting the standard requirements are discharged from the aerosol outlet and enter the test pipeline.


Since the salt spray aerosol generates static electricity, it is necessary to neutralize the salt spray aerosol. And for salt spray aerosol, it needs to be heated to produce salt particles. The method is: the aerosol that meets the particle size requirements is mixed with heated gas, and then the water in the aerosol is evaporated to produce salt particles.


And to the filter material, pressure difference sensors are installed on both sides of the filter material, and the number of particles in the upstream and downstream of the filter material is monitored during the test; the whole test process is carried out with a certain flow or air volume.

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Jinan Zhongce Electromechanical Equipment Co., Ltd.

Consulting Hotline: 053188983898/18660817670

Email: sales@pubtester.com

Address: Times Headquarters Base, Tianqiao District, Jinan City, Shandong Province



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