Most test systems for filters test only the element itself. But even with flawless filter elements leaks can occur due to improper installation or other defects in the installation. We therefore developed the FLT-3 for mobile testing of complete ventilation systems to verify proper operation. It can detect particulate as well as gaseous leaks.

It is composed of two separate units. The generator unit produces the test aerosol (paraffin oil) or test gas (acetone) for introduction into the ventilation system. The second units contains the corresponding detectors for both fractions: an aerosol-photometer and PID-sensor for acetone.