Definable air flow direction by supply / exhaust air flow balancing and controlling a constant difference

In laboratories, research is also performed outside of fume hoods. To protect neighbouring areas against exposure to hazardous substances, the direction of air flow in laboratories is defined such that air can only flow from adjacent areas into the laboratory, but never in the other direction.
In cleanrooms, however, it may be necessary for air to flow from these rooms to adjacent areas to prevent contamination of the cleanroom area.

The TROX VVS controllers with the LABCONTROL TMA-RS or TMA-RE control component (TCU-LON-II type of operation: room supply or room exhaust air) regulate the planned room balance reliably and achieve the required volume flow direction by means of a constant difference between the supply and exhaust air. For the purpose of balancing, the actual volume flow values of all controllers are continuously evaluated on the basis of the connected LON network variables (SNVT). This connection is executed during commissioning through binding of the LON network variables.