Leakrates and throughput inputs
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Leakrates and throughput inputs

Stefan Braun-BöschMarch 20, 2026

When using low throughputs and searching for leaks commonly the volume throughput qpV in pV-Units for stating the leakrate is used. Moreover the type of gas and the temperature have to be considered.

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Unit

mbar 1/s

Pa 1/s

Torr 1/s

lusec

cm3/s

cm3/hour

kg/hour Air

g/year R12

Torr 1/s

1.33

1.33

1

1000

1.32

4738

5.7E-3

2.1E5

Pa 1/s

56

1

4

4

2

3

3

2

























































Leakrate Conversion

convert the basic leakrate units.

Leakrate Conversion

=
—

chf eur

=
—

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