Pressure differentials help direct air between areas. Evaluate actual airflow paths alongside pressure readings.
Choose the protection objective
Product protection commonly directs air from cleaner to less-clean areas. Hazardous-material containment may need a different arrangement; positive pressure is not appropriate for every room.
Check the complete system
- Include rooms, corridors and airlocks in the pressure diagram.
- Consider open doors, leakage and extraction airflow.
- Combine pressure measurements with air balancing and airflow visualisation.
Monitor operation
Set operating and alarm limits for the approved design and risk assessment. Investigate persistent deviations before changing controls.