Leak Rate Calculator
How to Calculate Leak Rate (SCCM)
A leak rate is expressed as a volume per unit of time. The rate is found by measuring the change in pressure multiplied by the volume. That number is then divided by the change in time multiplied by the surrounding atmospheric pressure to calculate the leak rate (SCCM).
ATM = Atmospheric pressure (PSIA)
V = Test volume (cm3)
Δp = The decay in pressure during test time
Δt = The amount of decay time (min.)
SCCM = Standard Cubic Centimeters per Minute
For example:
Leak rate = .02psi/0.05min * 50cm3/14.7psia
Leak rate = 0.4 * 3.401
Leak rate = 1.36 SCCM
Leak Rate Calculator
Leak Rate:
