Measuring pressure in an air duct

I have an odd problem to overcome. I need to measure pressure changes in air ducts, from small 2" to much larger.

Pressure changes come every time the air systems are turned on, but more importantly when something is blocking airflow.

I was thinking about placing turbine like fans in the ducts and measure the speed changed in the fans themselves. But, I am not sure if this is the most accurate option.

Any thoughts?

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0 Former Member over 14 years ago

I think that most reliable solution would be using mass air flow sensors like those used in cars (they should be widely available). Check this pdf: http://www.autoshop101.com/forms/h34.pdf it gives an view to overall principle of operation.
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0 Former Member over 14 years ago

I think that most reliable solution would be using mass air flow sensors like those used in cars (they should be widely available). Check this pdf: http://www.autoshop101.com/forms/h34.pdf it gives an view to overall principle of operation.
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