Filter test rig for cleanable filter media

A test aerosol burden is applied to the test filter in the procedure. The rise in pressure loss is measured on the test filter. If a defined pressure loss is reached or a predefined time interval is exceeded, the filter medium is cleaned off using a blast of compressed air. These cycles are repeated until the end of the test procedure.

To compare the different filter media, the following data is collected:

• The pressure loss curve on the test filter and the gravimetric end filter

• The residual pressure loss curve after cleaning

• The mass emission at the gravimetric end filter

• The particle penetration in the clean gas with Promo^® (optional)

Dust dispersion with the RBG 2000

• Suitable for many different dusts used in real practical applications. The filtration and cleanability properties of surface filter media depend to a very large extent on the properties of the dust being filtered. It is, therefore, vital that these media can be tested with dusts used in real practical applications.

• Automatic control of the dust disperser RBG 2000 via the software of the MMTC 2000. This also offers you a simple way to adjust the mass flow rate.

• Particularly large dust containers for long testing times.

Horizontal dust processing unit:

• Minimization of particle losses through sedimentation and virtually homogeneous dust distribution on the test filter

• Simple adjustment of the raw gas concentration

• Re-application of fine dust to the filter after cleaning – as in practice

• Only small quantities of dust required

Before starting a filter test, an automatic test can be performed to check its leak-tightness in 3 minutes.

Aerosol sampling in the clean gas for online emission measurements with the Promo^® system

• Representative isokinetic sampling

• No influence on the cleaning pulse

• High time resolution of 1 s to display the particle penetration during the cleaning pulse

Simulation of the so-called garland effect:

In practical applications, how the medium is prepared and cut to size on the supporting basket influences a filter's cleaning characteristics and dust emissions. This is referred to as the so-called "garland effect." Palas offers adapters with different support devices for the test filter to simulate this effect in the laboratory.

In-situ measurement:

The simulation of realistic conditions in the laboratory often requires a significant investment in time and money. However, thanks to its compact design, the MMTC 2000 can be simply attached to a filter housing to perform the filter test under realistic conditions.

Extensions/Accessories

MMTC software

Windows-based software for controlling the test system, including automatic test procedures and data analysis:

• Standard test method in accordance with VDI 3926 (with aging)

• Standard test report and data analysis in accordance with VDI 3926

• Individual adjustment of operating parameters

• Individual programming of the test method

• Individual evaluation of the residual pressure loss and cycle time, comparison of individual cycles, and representation of the overall test

• Data export to Excel