Differential Pressure Sensor Frequently Asked Questions

Typical cleanrooms maintain a small positive pressure to keep contaminants out, with most standards recommending about +10 to 15Pa between rooms of different cleanliness levels. ISO guidance generally cites a (5 to20)Pa range for ISO 7 and ISO 8 rooms, with many facilities choosing values around +15Pa for stability and proper airflow direction. These levels ensure air flows outward from cleaner spaces, maintaining contamination control. PDT2 with the range of 125Pa well covers this measurement range and required accuracy.