The most accurate way to measure the difference in air pressure between two rooms is to use a differential pressure (dp) sensor or manometer. A typical dp sensing device incorporates a single measurement diaphragm with pressure connections on both sides isolated from each other.
How do you monitor negative pressure?
To test the pressure inside an acute negative pressure room, a smoke or tissue test can be performed. To carry out these tests, a smoke capsule or tissue is placed at the bottom of the negative pressure room door. If the smoke or tissue is pulled underneath the door, the room can be seen to be negatively pressurized.Feb 18, 2021
How do you read negative air pressure?
Depress the bulb to expel smoke. If the smoke is drawn into the room, the room has negative pressure. If the smoke is pushed away from the room, the room has positive pressure. If the smoke remains suspended in the air, the air in the room is at the same pressure as the air outside the crack.