Large Cleanroom Airflow Mapping with High-Output Fog
Large-room work is not solved by turning the biggest model to maximum output. A useful mapping plan divides the room into visual questions, controls the camera and fog-entry geometry, and preserves orientation across sequences.
Break the room into evidence zones
- Create a scaled room and airflow-source map.
- Identify critical process, personnel and material routes.
- Define camera stations and reference landmarks.
- Assign fog introduction points to each question.
- Run overlapping sequences so reviewers can connect local and room-scale behavior.
- Document output settings, hose layouts and environmental conditions.
High-output model shortlist
Current public planning values place AP100 and AP175 in the large-room range and AP200 in the maximum-output range. AP100/AP200 are active self-pressurized; AP175 is passive dewar-style. The architecture and workflow should be compared before model number.
Avoid the “white room” failure
Too much fog can make the room uniformly white, eliminating direction and depth cues. Use controlled pulses, high-contrast lighting and staged camera positions. The best evidence often comes from several deliberate local releases rather than one sustained flood.
Build a defensible fogger requirement
Send Applied Physics the room, process, utilities, documentation and safety constraints—not just a model number.