Standard pressure decay

The one that started it all

As a stripped down version of the previous technology, standard pressure decay compares the pressure on the part with the atmospheric pressure.
This technology is used when the application does not require a very high accuracy or a very fast cycle time.

Leak Ranges (in Pascal/second): From 10 Pa/sec
Maximum resolution: 10 Pascals
Maximum test pressure: 40 atmospheres
Pressure measurement: 1 % of the pressure + 2 digits and 0.1% of full scale resolution

Continuous flow

The most convenient

Often considered as a competitor to the Mass Flow technology, continuous flow relies on a differential pressure transducer and a very precise laminar flow tube to measure leak rates.
Its internal volume ensures that the flow generated by the leak remains very stable over time.

This technology is perfectly suited to the gas industry which sees it as a real time leak reader for gas appliances on production lines.

While the instrument generates a leak and shows its value on the screen, the
operator can tighten the connections of the gas product until it reaches an acceptable leak rate.

Leak Ranges (in cm3.atm/h): 0 to 100 or 0 to 1000 cm3.atm/h
Maximum resolution: 0.1 cm3.atm/h
Maximum test pressure: 50 kPa
Pressure measurement: ± 1% of Pressure + 2 digits and 0.1% of full scale resolution

Laminar Flow

The one for large leaks

Sometimes a leak can be considered as a “small flow”, or a flow as a “big leak”. When your reject level is too high for other technologies, it may be necessary to use a laminar flow tester.
A flow takes place between the pressure line and the leak hole of the part.

Our instrument features a laminar flow element across which our differential pressure transducer is connected.

Every flow generates a pressure difference between the inlet and outlet of the laminar flow element, and this variation is measured by the pressure transducer.

Leak Ranges (in L/H): 5, 30, 150, 500, 1500, 4000 or 10 000 L/H
Maximum resolution: >1% of full scale
Maximum test pressure: 350 kPa
Pressure measurement: 1% of the pressure + 2 digits and 0.1% of full scale resolution

Mass Flow

For those used to Mass Flow meters

The Mass Flow technology converts a mass of air going through a laminar flow element into a leak value. Should the test part leak, a flow will take place between a reference part and this leak, forcing the air to go through the Mass Flow measuring device that will convert it into a leak value such as cm3.atm/h.

However, unlike traditional Mass Flows, our technology can handle “large leaking” parts on the line without having to reset the unit.
And unlike our competitors again, we do not use heating elements to measure the mass of air, thus reducing the sensitivity to contamination.

We’ve also put our expertise in high pressure testing into the pneumatics of this unit, allowing it to measure with a high level of accuracy at test pressures of up to 20 Bar (300 PSI).

Finally, our Mass-Flow technology comes with the latest temperature compensation feature making sure you get the best results in the industry in the toughest conditions.

Leak Ranges (in cm3.atm/min): 2 or 20 or 200 cm3.atm/min
Maximum test pressure: 20 Bar
Pressure measurement: 1% of the pressure + 2 digits and 0.1% of full scale resolution

IONIQ

The fastest

So far, all the technologies we have described use air to measure the leak rate.
In this case we use electricity.
A high voltage loaded sharp end is applied next to an earth connected base and in between lays the plastic part we test. Should a hole exist in the part, ions will start moving from the earth to the sharp end.
This will result in a loss of power and be translated into a leak.
While this method does not quantify the leak rate in terms of cc/min for example, it is the fastest ever invented to detect a leak in a go / no go process.
We have achieved cycle times of less than 7/10 of a second.

Leak Ranges: Depends on the size of the hole and the material of the part
Accuracy: Depends on the size of the hole and the material of the part