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Change the answer mode for this tool by selecting pressure loss (ΔP), test volume (V), test duration (t) or leak rate (QL) as the parameter to calculate instead
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Contents
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User Guide
This tool will calculate any parameter from the formula for leakage rate for a pressurised enclosed space, which includes the difference in pressure from the start to the finish of leak test, the total volume of the space being tested, the elapsed time of the leak test, and the average leakage rate.
Formulas
The formulas used by this leakage rate calculator to determine each individual parameter are:
ΔP = QL · t / V
V = QL · t / ΔP
t = ΔP · V / QL
QL = ΔP · V / t
Symbols
- ΔP = Pressure loss
- V = Test volume
- t = Test duration time
- QL = Leak rate
Pressure Loss (ΔP)
This is how much the pressure drops a leak test.
Test Volume (V)
This is the total internal volume of the vessel being tested.
Test Duration Time (t)
This is the time taken for the pressure to drop during a leak test.
Leak Rate (QL )
This is a measure of the rate of gas loss from a test volume over the duration of the leak test. It is intended to provide a measure of the proportion of the total gas that has escaped, so that the same pressure loss for a larger sized volume would result in a larger leak rate value.
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