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Vdi Filter Material Filtration Performance Tester - China

price: check with company for price

VDI filter material filtration performance tester The VDI filter material filtration performance tester is used to evaluate the dynamic and static dust removal efficiency and filtration performance of the filter material.

By simulating the real situation of the filter material in actual use, it can quickly obtain the performance evaluation parameters of the filter material and accurately evaluate the quality of the filter material, Performance and life expectancy.

Test details: It can simulate the use process of the filter bag in the bag filter, and the filter material is aged according to the standard process (usually for several days).

When the performance of the filter material stabilizes, test the characteristic filtration index of the specific concentration of aerosol before and after passing the filter material "(Including pressure drop curve, residual pressure drop, filtration/cleaning cycle, remaining dust layer quality and dust quality of the filter material sample, etc.

) The results can be used to evaluate the filtering efficiency of the filter material in actual use.

Test principle: 1 - The air is first sent into the vertical dust generating duct to generate a dirty air flow full of dust.

The dust is dispersed with the compressed air in the dust generator, and the concentration is formed evenly distributed throughout the vertical pipeline and flows downwards.

Part of the horizontal pipeline passes through the tested filter material with the inhalation airflow, so that it is exposed to a constant airflow and dust concentration.

To simulate the operation of cleanable filter media.

2 - The dust forms a powder cake, which leads to an increase in pressure drop.

The differential pressure sensor detects the change in pressure drop before and after the tested filter material in real time.

Once the pressure drop reaches the preset value, the system releases a pulse of clean compressed air toward the powder formed on the dirty side, and performs back-blowing and cleaning (on-line cleaning) without affecting the air flow.

3 - The tested filter material filters the dust again, and so on.

The cleaning pulse must be accurate in time and high in repeatability, so that the pressure surface of the filter material is evenly balanced each time.

4 - The removed powder and remaining dust fall down with the vertical airflow to the dust collector at the bottom of the dirty air pipe.

Equipped with a dirty gas filter, so that the dust will not redisperse in the upstream of the dirty gas of the tested filter material, resulting in an ambiguous dust concentration, which makes the measurement invalid (especially the important parameter: residual pressure drop value); this design achieves error-free The long-term operation of the instrument does not require frequent and comprehensive interruption of measurement due to cleaning up dust deposits.

Applicable standards: VDI/DIN3926 Standard Test Method for Evaluating Cleanable Filter Media ISO11057 Air Quality-Test Method for Filtering Performance of Cleanable Filter Media ASTM/D6830 test method to determine the pressure drop and filtration performance of cleanable filter media Technical requirements for GB/T6719 bag filter JISZ8909-1 Test method for filter media for dust collection.

Part 1: Filtration efficiency VDI filter material filtration performance tester parameters: 1 - Export dust concentration; 2 - Test the quality change of the filter material; 3 - Initial residual pressure drop, average residual pressure drop, residual pressure drop increment; 4 - Average filtration cycle; 5 - Dust removal efficiency, penetration rate; 6 - Cleaning time, cleaning cycle; 7 - Static dust removal efficiency; 8 - Dynamic dust removal efficiency.

click here get more about testing instrument information: PS: (WLJCDM809)


Company Contact:


  • Phone: +862164200566

  • Address: No. 2578 Minhang District Gu Dai Road, Shanghai, Shanghai , shanghai , China

  • Email: Email


Published date: September 29, 2021

  • Business Description: Qinsun Instruments Co., LTD was founded in 2010, comprised of many experienced engineers and designers standing in the forefront of the industry.

    Qinsun specialize in the research and development of high quality lab instrument for textile testing industry.

    Our head office in Shanghai and we provide high quality testing instrument and comprehensive service for textile factory, academic research institute and textile lab worldwide.

    We have our own textile testing lab.

    Our textile testing methods and testing equipment are in the leading position in the industry and have passed the textile testing certification and iso textile testing standards issued by a number of testing.

    We always develop the highly sophisticated test instrument which can meet the various demands of the textile industry.

    We provide the upfront Micro weathering test equipments with our own brand name QINSUN, such as thermal resistance wet resistance meter, MMT(moisture management tester) etc, and the new functional test instrument include air permeability tester, hydrostatic head tester, thermal protection performance tester, as well as the widely used lab testing equipment such as textile washing color fastness tester, abrasion tester, pilling tester, rubbing color fastness tester, ironing tester and perspiration tester.

    For the laboratory requirements, we also bring forth the new practical test instruments.

    Qinsun products include: fabric test equipment, Textile Fabric Tester, fiber tester, yarn tester, carpet tester, non-woven fabric tester, toy tester, leather tester, automotive material test equipment and others.

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