room pressure indicators and alarms for monitoring thedirection of airflow into or out of a room. used in hospitals, labs, prisons, animal facilities, cleanrooms, anywhere you want to see air direction/room pressurization into or out of the room.
Products & Services:
Ball In Tube
Differential Pressure Indicator
Negative Room Pressure
Ping Pong Ball
Web Site Results
...unit has a straight tube that requires the ...color of the ball to be MANUALLY