Calculate the difference in pressure between two points.
Pressure Parameters
kPa
kPa
Calculation Results
Enter two pressure values
Quick Reference
P₁Upstream / High Pressure
P₂Downstream / Low Pressure
ΔPDifference (Differential)
Overview
Differential pressure is the difference between two pressure measurements. It is a fundamental concept used in flow measurement (venturi meters), filter monitoring, and liquid level sensing.
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Pro Tips
ΔP is often measured using a DP transmitter or a U-tube manometer.
In fluid flow, ΔP is related to the square of the flow rate (Bernoulli's principle).
Always ensure both measurements are in the same units.
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Fun Facts
"The Pitot tube on an aircraft measures the differential pressure between 'static' and 'total' pressure to determine airspeed."
"Differential pressure across a filter is the standard way to determine when it's time to replace it."
