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Vdi Filter Material Filtration Performance Tester

Posted at: Offers to Sell and Export | Posted on: Wednesday 29 September 2021 5:54 am | Poster last visit: Friday 22 October 2021 |

Product Category: Main » Engineering and Research and Technology Based Services » Manufacturing technologies » Quality control » Materials testing » Vdi Filter Material Filtration Performance Tester

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Product Description:

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:

No member photo
Contact Name: Unique Xu
Company Name: Qinsun Instruments (shanghai) Co., Ltd.
Email: Email
Tel: +86-021-6420 0566
Fax: +86-21-6420 0566-810
Street Address: No. 258, Banting Rd,
Songjiang District
Shanghai, China 200213
Website: https://www.qinsun-lab.com
Member name: qinsunlab
Country: China-CN China
Member Since: 16 March 2016
Total Leads: 168 qinsunlab Import Export Business Leads
Business focus: Manufacturing Textile Testing Equipment, Laboratory Equipment, Protective Clothing Testing Equipment, Mask Testing Equipment
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