The reliable solution for all leak testing tasks from a single source.

[Translate to Englisch:] ISM Montagezentrum

Systems - General

ISM develops and supplies individual, turnkey test systems for industrial leakage measurement. Our solutions range from pressure decay measuring devices to complex integral leak testing systems and can be used in a wide range of applications.

The selection of the method suitable for the respective application depends on many factors, such as specified maximum leak rate, the condition of the component under test, test pressure, the number of pieces to be tested as well as the test costs. With the measuring devices and special equipment currently available on the market, almost any application can be solved technically and economically efficient.

With the selection of the appropriate test method and the measuring instruments intended for this purpose, a test adaptation to accommodate the workpiece is usually also required. In the most straightforward case, the test object is connected to the measuring device via a freely movable, manually guided quick-action coupling. However, most tests require an increased degree of automation, whereby the operation is limited to loading and unloading the component under test. In this scenario, the adaptation is performed pneumatically or hydraulically by the fixture.


Safety and calibration

The safety of the operating personnel is ensured by appropriate enclosures of the fixture and suitable two-hand start procedures or approved light curtains. A clear GOOD/BAD statement with acknowledgement of a BAD message by the operator and optionally monitored bad part gates prevent mixing of tested workpieces.

All leak-tightness measuring devices supplied by ISM are checked by means of certified calibration standards, which are usually installed in a tight workpiece. When the sealing cap of the calibration leak is opened, the system must indicate "BAD", whereas  a "GOOD" indication must appear when the leak is closed. This test confirms the perfect functionality of the entire testing system from the adaptation of the test object to the measuring instrument.


Pressure drop

Pressure drop measurement is the most cost-effective test method for serial parts - dry, clean and widely used. By the use of special measuring instruments (e. g. micro-volume), pressure drop measurement is now also suitable for tasks that were previously beyond the scope of differential pressure technology.

Integral leak measurement

Integral leakage measurement represents the most sensitive method for determining smallest leak rates on large-volume test objects. Various processes and test gases can now be used industrially, and leak localization is also possible. 

[Translate to Englisch:] ISM Konstruktion und Montage Erklärung

Our in-house design and machining department allows us to carry out the required testing tasks quickly and cost-effectively.

From simple sealing adapters to fully automated testing machines, all required modules are planned and manufactured here under one roof. 

Integral Leak Measurement

[Translate to Englisch:] Helium Dichtheitsmessung

Integral leakage measurement represents the most sensitive method for determining smallest leak rates on large-volume test objects. Various processes and test gases can now be used industrially, and leak localization is also possible. 

  • Test chamber volume from 1 ml to 50 m3 kjhi

  • Test pressures from 0.1 to 250 bar

  • Leak rates from 1 x 10E-2 to 1 x 10E-8 mbar l/s

  • Standard test gases: helium / forming gas (95/5 H2/N2) / SF6

Pressure Drop and Flow Tightness Measurement

[Translate to Englisch:] Differenzdruck Dichtheitsmessung

Pressure drop measurement is the most cost-effective test method for serial parts - dry, clean and widely used. By the use of special measuring instruments (e. g. micro-volume), pressure drop measurement is now also suitable for tasks that were previously beyond the scope of differential pressure technology. 

  • Test pressures from -0.98 to 30 bar
  • Leakage rates from 100 l/s to 1 x 10E-3 mbar l/s

Safety and Calibration

[Translate to Englisch:] SICK Sicherheits-Kamera

The safety of the operating personnel is ensured by appropriate enclosures of the fixture and suitable two-hand start procedures or approved light curtains. A clear GOOD/BAD statement with acknowledgement of a BAD message by the operator and optionally monitored bad part gates prevent mixing of tested workpieces.

[Translate to Englisch:] ISM Prüfleck im Adapter

All leak-tightness measuring devices supplied by ISM are checked by means of certified calibration standards, which are usually installed in a tight workpiece. When the sealing cap of the calibration leak is opened, the system must indicate "BAD", whereas  a "GOOD" indication must appear when the leak is closed. This test confirms the perfect functionality of the entire testing system from the adaptation of the test object to the measuring instrument.

Unbeatable short delivery times due to standardization and available test racks.

[Translate to Englisch:] ISM Vorrichtungsbau - unschlagbar durch kurze Lieferzeiten.