You can measure barometric pressure in a room using a digital manometer. A manometer, specifically one designed for low-pressure measurements, is the most accurate tool for this purpose.
Here's a breakdown:
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Digital Manometer: This is the recommended tool. Look for one with a test range of 0 to 5 inches of water column (w.c.).
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Accuracy is Key: The manometer should have a readout that goes down to 0.01 inches of water column for precise readings.
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Avoid High-Range Meters: Don't use manometers with higher pressure ranges than necessary. You'll sacrifice accuracy at the low-pressure levels found in rooms.
Why use a manometer?
Manometers provide a direct and accurate measurement of pressure differences. They are preferred in situations where precision is crucial.
In summary, use a good quality digital manometer designed for low-pressure measurement to accurately measure barometric pressure in a room.