LEAK TESTING

Conversion tables

There are different kinds of conversion tables to work with. On this page you can find some examples of the most used conversion tables.

Air Flows

This table provides conversions for volumetrc flow rates, which is a measure of loss in volume of gas leaked over time.

mm³/s
mbar l/s
Pa m³/s
cm³/s (ml/s)
cm³/min (ml/min)
Torr l/s
mm³/s

1

1.013E-03

1.013E-04

1.000E-03

6.000E-02

7.599E-04

mbar l/s

987.0

1

0.1000

0.9870

59.22

0.7501

Pa m³/s

9870

10.00

1

9.870

592.2

7.501

cm³/s (ml/s)

1000

1.013

0.1013

1

60.00

0.7599

cm³/min (ml/min)

16.67

1.689E-02

1.689E-03

1.667E-02

1

1.267E-02

Torr l/s

1316

1.333

0.1333

1.316

78.95

1

Pressure

The table provides conversions for various pressure units commonly used in leak testing. Pressure is a critical parameter in leak testing, as it affects the behaviour of gases and the

detection of leaks.

Pa
Bar
mbar
PSI
mmWg
Torr
Pa

1

1.000E-05

1.000E-02

1.450E-04

1.020E-02

7.501E-03

Bar

1.000E+05

1

1000

14.50

1020

750.1

PSI

6.895E+03

6.895E-02

1

1.450E-02

70.31

51.71

mbar

100.0

1.000E-03

68.95

1

1.020

0.750

mmWg

98.07

9.807E-04

0.981

1.422E-02

1

0.736

Torr

133.3

1.333E-03

1.333

1.934E-02

1.360

1

Bubbles to leak

This table presents relations between leak rate and bubble behaviour, which is an important aspect of leak testing. In the table, a leak rate in ml/s is presented together with other

related measures. Related measures are the time it takes to leak 1 ml, the time it takes to leak a bubble with a 2 mm radius, and the number of bubbles over time.

cm³/s (ml/s)
mm³/sec
cm³/min (ml/min)
1 cm³ (1 ml)
Time to observe a 2mm bubble
2mm bubble per time unit

0.1

100.0

6

10.0 seconds

0.33 seconds

3 per second

0.01

10.0

0.6

100.0 seconds

3.31 seconds

18.14 per minute

0.001

1.0

0.06

16.7 minutes

33.07 seconds

1.81 per minute

0.0001

0.1

6E-03

2.8 hours

5.51 minutes

10.88 per hour

1E-05

0.01

6E-04

27.8 hours

55.12 minutes

1.09 per hour

1E-06

1E-03

6E-05

11.6 days

9.19 hours

2.61 per day

1E-07

1E-04

6E-06

3.9 months

3.83 days

7.84 per month

1E-08

1E-05

6E-07

3.2 years

38.28 days

9.40 per year

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