Filter test bench

Filter line
© IBP/Bernd Müller
Test apparatus for efficiency studies on air filters, catalytic converters and sensors.

Testing air filters, catalytic converters and sensors#

We use our filter test bench to assess the efficacy of air filters, catalytic converters and sensors with regard to their ability to capture volatile organic compounds (VOCs) or odorous substances, particles and waste gases from combustion processes (e.g. nitrogen oxides, carbon monoxide, sulfur dioxide) as well as microbial contamination. In many cases when testing products, a wide range of chemical impurities can be freely selected. A syringe pump or test gas cylinder is used to add the substances to a regulated gas flow (i.e. outside air cleaned with activated carbon) with a maximum flow rate of 1800 m³/h. During the test, the concentration of the added substances is monitored by sensors.

We also use the filter test bench to calibrate and test the function of gas sensors and detectors. Four tests can be conducted in parallel via separate test lines, for example to determine the degradation rates of different substances or to perform validations. The test bench is generally operated under normal conditions, but if required, specific climatic conditions can also be set (maximum temperature 80°C and absolute humidity 30 kg/h).