FlowBlaster
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Functional Test of Ventilation and Air-Conditioning Systems An airtight building envelope is an important prerequisite for implementing up-to-date energy designs in new buildings as well as during building projects in existing buildings. In order to guarantee hygienic indoor air, fresh air supply through controlled room ventilation is the most sensible solution. Airtightness testing of ventilation duct systems according to German and European Industrial Standard DIN EN 12599 Testing and adjusting supply and exhaust air valves Micro Leakage Meter The Minneapolis Micro Leakage Meter (MLM) Measuring System has been developed by the manufacturer The Energy Conservatory in close cooperation with BlowerDoor GmbH in order to guarantee the functionality of ventilation systems by conducting airtightness tests of the duct system. With a measuring range of 0.17 to 78.5 m³/h, the MLM is also suitable for testing building components as well as small and highly airtight clean rooms. The airtightness of the ventilation ducts installed is an important requirement for the functionality and efficiency of ventilation systems. Leakages in the ductwork impede the targeted distribution of air in the building. Consequently, the high level of air quality planned is not achieved. Leaky ventilation ducts impair the efficiency of ventilation systems, in particular of those with heat recovery. FlowBlaster With a measuring range of 17 to 500 m³/h, the Minneapolis FlowBlaster has been especially designed for testing ventilation systems during residential and commercial construction. In combination with the measuring fan BlowerDoor MiniFan, it allows the precise measurement of the air flow at supply and exhaust air valves.

Micro Leakage Meter The Minneapolis Micro Leakage Meter allows you to reliably detect and locate leakages in the ductwork of ventilation systems and to eliminate them during the quality assurance process. The measuring principle The ventilation systems are tested by ventilation strands. When testing the supply air ducts, the MLM is, for example, connected to the supply air valve. All other valves and the supply air duct at the central unit are closed with rubber bladders. Using the Minneapolis DuctBlaster fan and the pressure gauge DG-700 (included in the BlowerDoor MiniFan Measuring...

FlowBlaster Measuring the supply and exhaust air flow at the respective valves provides information as to whether the requirements have been implemented as designed. If the air flows measured at the valves deviate from the requirements, the ventilation system can be adjusted. The measuring principle The fact that placing any kind of measuring device on air inlets or outlets changes the pressure ratios at the valve, makes measuring air flows at supply and exhaust air valves difficult. The changed pressure ratios consequently also occur in the duct system and influence the measuring results....

Technical Data Micro Leakage Meter Measuring range: Pressure differential: Measuring accuracy: With disc 1 or 2: ± 5 % or ± 0.37 m³/h of the measured value (the higher value is valid) With disc 1 or 2: ± 5 % or ± 0.37 m³/h of the measured value (the higher value is valid) With disc 1 or 2 (measuring range of 2.15 – 78.5 m³/h): ± 5 % or ± 0.37 m³/h of the measured value (the higher value is valid) With disc 3 (measuring range of 0.65 – 3.23 m³/h): ± 5 % or ± 0.09 m³/h of the measured value (the higher value is valid) Software TECLOG MLM (Version TECLOG3 in English, reference guide in...